Bug 1058748 (CVE-2014-1690)

Summary: CVE-2014-1690 Kernel: netfilter: nf_nat: leakage of uninitialized buffer in IRC NAT helper
Product: [Other] Security Response Reporter: Prasad J Pandit <ppandit>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED ERRATA QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: agordeev, anton, aquini, bhu, davej, dhoward, esammons, fhrbata, gansalmon, iboverma, itamar, jforbes, jkacur, jkurik, jonathan, jross, jwboyer, kernel-maint, kernel-mgr, lgoncalv, lwang, madhu.chinakonda, matt, mcressma, pholasek, plougher, rt-maint, rvrbovsk, williams
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2014-04-28 17:35:44 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 1058782, 1058783, 1058784, 1058786    
Bug Blocks: 1053179    

Description Prasad J Pandit 2014-01-28 13:23:24 UTC
Linux kernel built with the NetFilter Connection Tracking(NF_CONNTRACK)
support for IRC protocol(NF_NAT_IRC), is vulnerable to an information leakage
flaw. It could occur when communicating over direct client-to-client IRC
connection(/dcc) via a NAT-ed network. Kernel attempts to mangle IRC TCP
packet's content, wherein an uninitialised 'buffer' object is copied to a
socket buffer and sent over to the other end of a connection.

A user/program could use this flaw to leak kernel memory bytes.

Upstream fix:
-------------
  -> https://git.kernel.org/linus/2690d97ade05c5325cbf7c72b94b90d265659886

Comment 1 Prasad J Pandit 2014-01-28 13:27:28 UTC
Statement:

This issue does not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 5 and Red Hat Enterprise Linux 6.

Comment 2 Prasad J Pandit 2014-01-28 14:05:12 UTC
Acknowledgement:

This issue was discovered by Daniel Borkmann of Red Hat Inc.

Comment 5 Prasad J Pandit 2014-01-28 14:18:45 UTC
Created kernel tracking bugs for this issue:

Affects: fedora-all [bug 1058786]

Comment 6 errata-xmlrpc 2014-04-28 16:53:56 UTC
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2014:0439 https://rhn.redhat.com/errata/RHSA-2014-0439.html