Bug 186245 - CVE-2006-1342 Small information leak in SO_ORIGINAL_DST and getname() (CVE-2006-1343)
Summary: CVE-2006-1342 Small information leak in SO_ORIGINAL_DST and getname() (CVE-20...
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 2.1
Classification: Red Hat
Component: kernel
Version: 2.1
Hardware: i386
OS: Linux
medium
low
Target Milestone: ---
Assignee: Don Howard
QA Contact: Brian Brock
URL:
Whiteboard: impact=low,source=netdev,reported=200...
Keywords: Security
Depends On:
Blocks: 143573
TreeView+ depends on / blocked
 
Reported: 2006-03-22 14:53 UTC by Marcel Holtmann
Modified: 2007-11-30 22:06 UTC (History)
1 user (show)

(edit)
Clone Of:
(edit)
Last Closed: 2006-07-13 11:46:09 UTC


Attachments (Terms of Use)


External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2006:0579 normal SHIPPED_LIVE Important: kernel security update 2006-07-13 04:00:00 UTC

Description Marcel Holtmann 2006-03-22 14:53:08 UTC
It appears sockaddr_in.sin_zero is not zeroed during certain operations
returning IPv4 socket names, namely:

- getsockopt(...SO_ORIGINAL_DST...) (2.4 and 2.6)
  see getorigdst() in net/ipv4/netfilter/ip_conntrack_core.c
  (+ in net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c in 2.6?!)

- getsockname() and getpeername() (and accept()) (2.4 only)
  see inet_getname() in net/ipv4/af_inet.c

and several unitialized bytes of kernel stack (sizeof(sin_zero) == 6 to be
precise) leak to the userspace.

http://marc.theaimsgroup.com/?l=linux-netdev&m=114148078223594&w=2

A patch has been included in Marcelo's 2.4 tree:

http://www.kernel.org/git/?p=linux/kernel/git/marcelo/linux-2.4.git;a=commit;h=09d3b3dcfa80c9094f1748c1be064b9326c9ef2b

Comment 8 Red Hat Bugzilla 2006-07-13 11:46:09 UTC
An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2006-0579.html



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