#VU42856 Input validation error in Glibc - CVE-2009-5029
Published: May 2, 2013 / Updated: August 11, 2020
Vulnerability identifier: #VU42856
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2009-5029
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vulnerable software:
Glibc
Glibc
Software vendor:
GNU
GNU
Description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
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.
Remediation
Install update from vendor's website.
External links
- 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;a=commit;h=97ac2654b2d831acaa18a2b018b0736245903fd2
- http://sourceware.org/ml/libc-alpha/2011-12/msg00037.html
- https://bugzilla.redhat.com/show_bug.cgi?id=761245