CVE-2009-5029

Severity: medium (CVSS 6.8 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 8.8% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2013-05-02 · updated 2026-06-16
Weakness: CWE-189

Description

Integer overflow in the __tzfile_read function in glibc before 2.15 allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted timezone (TZ) file, as demonstrated using vsftpd.

Affected products

GNU C Library (glibc): through 2.14; 2.0, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5 (+8)

References

http://dividead.wordpress.com/2009/06/01/glibc-timezone-integer-overflow/
http://lists.grok.org.uk/pipermail/full-disclosure/2011-December/084452.html
http://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=97ac2654b2d831acaa18a2b018b0736245903fd2
http://sourceware.org/ml/libc-alpha/2011-12/msg00037.html
https://bugzilla.redhat.com/show_bug.cgi?id=761245
http://dividead.wordpress.com/2009/06/01/glibc-timezone-integer-overflow/
http://lists.grok.org.uk/pipermail/full-disclosure/2011-December/084452.html
http://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=97ac2654b2d831acaa18a2b018b0736245903fd2
http://sourceware.org/ml/libc-alpha/2011-12/msg00037.html
https://bugzilla.redhat.com/show_bug.cgi?id=761245

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