CVE-2013-7423

Publication date 24 February 2015

Last updated 24 July 2024

Ubuntu priority

The send_dg function in resolv/res_send.c in GNU C Library (aka glibc or libc6) before 2.20 does not properly reuse file descriptors, which allows remote attackers to send DNS queries to unintended locations via a large number of requests that trigger a call to the getaddrinfo function.

Read the notes from the security team

Status

Show unmaintained releases

Package	Ubuntu Release	Status
eglibc	14.10 utopic	Not in release
	14.04 LTS trusty	Fixed 2.19-0ubuntu6.6
	12.04 LTS precise	Fixed 2.15-0ubuntu10.11
	10.04 LTS lucid	Fixed 2.11.1-0ubuntu7.21
glibc	14.10 utopic	Not affected
	14.04 LTS trusty	Not in release
	12.04 LTS precise	Not in release
	10.04 LTS lucid	Not in release

Notes

mdeslaur

fixed by any/cvs-resolv-reuse-fd.diff in utopic

Patch details

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

Package	Patch details
glibc	Upstream: https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=f9d2d03254a58d92635a311a42253eeed5a40a47

CVE-2013-7423

Status

Notes

mdeslaur

Patch details

References

Related Ubuntu Security Notices (USN)

Other references