CVE-2012-3404
The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.12 and other versions does not properly calculate a buffer length, which allows context-dependent attackers to bypass the FORTIFY_SOURCE format-string protection…
Does this matter?
Lower severity and a low EPSS score (2.23%). Track it; it rarely justifies an emergency change on its own.
Description
The vfprintf function in stdio-common/vfprintf.c in libc in GNU C Library (aka glibc) 2.12 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 (stack corruption and crash) via a format string that uses positional parameters and many format specifiers.
- CVSS 2.0
- 5.0 MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:P
- EPSS
- 2.23% probability · 82th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-189
- Affected
- gnu/glibc · redhat/enterprise virtualization · canonical/ubuntu linux · redhat/enterprise linux
- Source
- secalert@redhat.com
References
- http://rhn.redhat.com/errata/RHSA-2012-1098.html
- http://rhn.redhat.com/errata/RHSA-2012-1200.html
- http://www.openwall.com/lists/oss-security/2012/07/11/17
- http://www.ubuntu.com/usn/USN-1589-1
- https://bugzilla.redhat.com/show_bug.cgi?id=833703
- https://security.gentoo.org/glsa/201503-04
- https://sourceware.org/bugzilla/show_bug.cgi?id=12445Exploit, Patch
- http://rhn.redhat.com/errata/RHSA-2012-1098.html
- http://rhn.redhat.com/errata/RHSA-2012-1200.html
- http://www.openwall.com/lists/oss-security/2012/07/11/17
- http://www.ubuntu.com/usn/USN-1589-1
- https://bugzilla.redhat.com/show_bug.cgi?id=833703
- https://security.gentoo.org/glsa/201503-04
- https://sourceware.org/bugzilla/show_bug.cgi?id=12445Exploit, Patch
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.