Bug 393477 (CVE-2009-5029)

Summary:	<sys-libs/glibc-2.14.1-r3 : "__tzfile_read()" Buffer Overflow Vulnerability (CVE-2009-5029)
Product:	Gentoo Security	Reporter:	Agostino Sarubbo <ago>
Component:	Vulnerabilities	Assignee:	Gentoo Security <security>
Status:	RESOLVED FIXED
Severity:	major
Priority:	Normal
Version:	unspecified
Hardware:	All
OS:	Linux
URL:	https://secunia.com/advisories/47064/
See Also:	http://sourceware.org/bugzilla/show_bug.cgi?id=13506
Whiteboard:	A2 [glsa]
Package list:		Runtime testing required:	---
Bug Depends on:	411903
Bug Blocks:

Description Agostino Sarubbo gentoo-dev

2011-12-07 08:42:03 UTC

From secunia security advisory at $URL:

Description:
The vulnerability is caused due to an error within the "__tzfile_read()" function (time/tzfile.c) and can be exploited to cause a heap-based buffer overflow via a specially crafted timezone file.

Successful exploitation may allow the execution of arbitrary code but requires that a malicious timezone file is loaded (e.g. by uploading it into the chroot of an FTP server).

The vulnerability is confirmed in version 2.14.1. Other versions may also be affected.


Solution:
There is no patch(es) atm, so unpatched.

Comment 1 SpanKY gentoo-dev

2012-01-01 09:47:58 UTC

i've included the upstream fix in glibc-2.14.1-r2.  but that isn't ready for stabilizing yet.  not sure how important this is in reality to exploit (seems fairly unlikely).

Comment 2 Agostino Sarubbo gentoo-dev

2012-04-17 15:08:19 UTC

the stabilization will be done in bug 411903

Comment 3 Tim Sammut (RETIRED) gentoo-dev

2012-08-16 04:55:17 UTC

Thanks, everyone. GLSA request filed.

Comment 4 Mark Loeser (RETIRED) gentoo-dev

2013-02-22 23:30:37 UTC

toolchain done

Comment 5 GLSAMaker/CVETool Bot gentoo-dev

2013-05-09 11:29:51 UTC

CVE-2009-5029 (http://nvd.nist.gov/nvd.cfm?cvename=CVE-2009-5029):
  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.

Comment 6 GLSAMaker/CVETool Bot gentoo-dev

2013-12-03 04:14:41 UTC

This issue was resolved and addressed in
 GLSA 201312-01 at http://security.gentoo.org/glsa/glsa-201312-01.xml
by GLSA coordinator Chris Reffett (creffett).