Bug 968036 - (CVE-2013-2850) CVE-2013-2850 kernel: iscsi-target: heap buffer overflow on large key error
CVE-2013-2850 kernel: iscsi-target: heap buffer overflow on large key error
Status: NEW
Product: Security Response
Classification: Other
Component: vulnerability (Show other bugs)
unspecified
All Linux
high Severity high
: ---
: ---
Assigned To: Red Hat Product Security
impact=important,public=20130530,repo...
: Security
Depends On: 968038 968039 969272
Blocks: 968040
  Show dependency treegraph
 
Reported: 2013-05-28 16:19 EDT by Petr Matousek
Modified: 2016-03-04 07:49 EST (History)
8 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed:
Type: ---
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---


Attachments (Terms of Use)

  None (edit)
Description Petr Matousek 2013-05-28 16:19:05 EDT
A flaw was found in the way Linux kernel's iSCSI target processed large keys. If a key was larger than 64 bytes, as checked by iscsi_check_key(), the error response packet, generated by iscsi_add_notunderstood_response(), would still attempt to copy the entire key into the packet, overflowing the structure on the heap.

A remote attacker could use this flaw to escalate their privileges on the system.

Acknowledgements:

Red Hat would like to thank Kees Cook for reporting this issue.
Comment 1 Petr Matousek 2013-05-28 16:19:58 EDT
Statement:

This issue does not affect the versions of the Linux kernel as shipped with Red Hat Enterprise Linux 5 and 6 as those versions do not provide support for in-kernel iSCSI target.

Future kernel updates in Red Hat Enterprise Linux MRG 2 may address this flaw.
Comment 5 Petr Matousek 2013-05-31 02:17:31 EDT
Created kernel tracking bugs for this issue

Affects: fedora-all [bug 969272]
Comment 7 Fedora Update System 2013-06-07 00:33:12 EDT
kernel-3.9.4-301.fc19 has been pushed to the Fedora 19 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 8 Fedora Update System 2013-06-13 02:04:33 EDT
kernel-3.9.5-201.fc18 has been pushed to the Fedora 18 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 9 Fedora Update System 2013-06-30 21:33:53 EDT
kernel-3.9.8-100.fc17 has been pushed to the Fedora 17 stable repository.  If problems still persist, please make note of it in this bug report.
Comment 10 errata-xmlrpc 2013-09-16 13:05:01 EDT
This issue has been addressed in following products:

  MRG for RHEL-6 v.2

Via RHSA-2013:1264 https://rhn.redhat.com/errata/RHSA-2013-1264.html

Note You need to log in before you can comment on or make changes to this bug.