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CVE-2000-1134

HighPublished

Multiple shell programs on various Unix systems, including (1) tcsh, (2) csh, (3) sh, and (4) bash, follow symlinks when processing << redirects (aka...

Published: Dec 19, 2000
Updated: Aug 8, 2024
Assigning CNA: mitre
Evidence observed: Jan 2, 2000

Primary CVSS

7.2/ 10High

nvd · CVSS 2.0

AV:L/AC:L/Au:N/C:C/I:C/A:C

EPSS probability estimate

1.4%

Low · next 30 days

Percentile: 71.2%
Model date: Sep 21, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

Multiple shell programs on various Unix systems, including (1) tcsh, (2) csh, (3) sh, and (4) bash, follow symlinks when processing << redirects (aka here-documents or in-here documents), which allows local users to overwrite files of other users via a symlink attack.

Sources

UUCP - File Creation/Overwriting SymlinksExploit
t--zen · linux · Dec 4, 2000
Apple Mac OSX 10 / HP-UX 9/10/11 / Mandriva 6/7 / RedHat 5/6 / SCO 5 / IRIX 6 - Shell Redirection Race ConditionExploit
proton · unix · Jan 2, 2000

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