CVE-2012-3405
Publication date 13 July 2012
Last updated 24 July 2024
Ubuntu priority
The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.14 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection mechanism and cause a denial of service (segmentation fault and crash) via a format string with a large number of format specifiers that triggers "desynchronization within the buffer size handling," a different vulnerability than CVE-2012-3404.
Status
Package | Ubuntu Release | Status |
---|---|---|
eglibc | ||
glibc | ||
Notes
Patch details
Package | Patch details |
---|---|
eglibc |
References
Related Ubuntu Security Notices (USN)
- USN-1589-1
- GNU C Library vulnerabilities
- 2 October 2012
Other references
- http://sourceware.org/bugzilla/show_bug.cgi?id=13446
- http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=a4647e727a2a52e1259474c13f4b13288938bed4
- https://bugzilla.redhat.com/show_bug.cgi?id=833704
- http://sourceware.org/git/?p=glibc.git;a=commitdiff;h=1d498daa95384e5c9ad5bcb35e7a996e5869ac39
- http://www.openwall.com/lists/oss-security/2012/07/11/5
- http://www.openwall.com/lists/oss-security/2012/07/11/17
- https://www.cve.org/CVERecord?id=CVE-2012-3405