Bug 919164 (CVE-2013-1827)

Summary: CVE-2013-1827 Kernel: dccp: check ccid before NULL poiter dereference
Product: [Other] Security Response Reporter: Prasad J Pandit <prasad>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: agordeev, anton, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jonathan, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, mcressma, npajkovs, plougher, pmatouse, rt-maint, rvrbovsk, sforsber, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard: impact=moderate,public=20120815,reported=20130305,source=oss-security,cvss2=4.9/AV:L/AC:L/Au:N/C:N/I:N/A:C,rhel-5/kernel=affected,rhel-6/kernel=affected,mrg-2/realtime-kernel=notaffected,fedora-all/kernel=notaffected
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2013-04-23 17:15:15 EDT Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---
Bug Depends On: 919184, 919186, 919187, 919188    
Bug Blocks: 919027    

Description Prasad J Pandit 2013-03-07 13:28:33 EST
Linux kernels built with Datagram Congestion Control Protocol(DCCP),
are vulnerable to a NULL pointer dereference flaw. This occurs while accessing socket options of dccp_sock objects via ccid_hc_rx_getsockopt & ccid_hc_tx_getsockopt routines.

A user/program could use this flaw to crash the kernel, resulting in DoS.

Upstream fix:
 -> https://git.kernel.org/linus/276bdb82dedb290511467a5a4fdbe9f0b52dce6f

 -> http://seclists.org/oss-sec/2013/q1/598
Comment 1 Prasad J Pandit 2013-03-07 14:33:40 EST

This issue does not affect the versions of the kernel package as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise MRG 2.

This issue affects the version of Linux kernel as shipped with Red Hat Enterprise Linux 6.
Comment 3 errata-xmlrpc 2013-04-23 14:29:00 EDT
This issue has been addressed in following products:

  Red Hat Enterprise Linux 6

Via RHSA-2013:0744 https://rhn.redhat.com/errata/RHSA-2013-0744.html