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CVE-2012-3405

Publication date 13 July 2012

Last updated 24 July 2024

Ubuntu priority

Medium

Why this 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.

Read the notes from the security team

Status

Package Ubuntu Release Status
eglibc 12.04 LTS precise
Not affected
11.10 oneiric
Fixed 2.13-20ubuntu5.2
11.04 natty
Fixed 2.13-0ubuntu13.2
10.04 LTS lucid
Fixed 2.11.1-0ubuntu7.11
8.04 LTS hardy Not in release
glibc 12.04 LTS precise Not in release
11.10 oneiric Not in release
11.04 natty Not in release
10.04 LTS lucid Not in release
8.04 LTS hardy
Not affected

Notes

sbeattie

lucid -> oneiric only

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
eglibc