Bug 393477 – <sys-libs/glibc-2.14.1-r3 : "__tzfile_read()" Buffer Overflow Vulnerability (CVE-2009-5029)

• Status: RESOLVED FIXED
• Product: Gentoo Security

[Description Agostino Sarubbo 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 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 2012-04-17 15:08:19 UTC]

the stabilization will be done in bug 411903

[Comment 3 Tim Sammut (RETIRED) 2012-08-16 04:55:17 UTC]

Thanks, everyone. GLSA request filed.

[Comment 4 Mark Loeser (RETIRED) 2013-02-22 23:30:37 UTC]

toolchain done

[Comment 5 GLSAMaker/CVETool Bot 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 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).