Vulnerability Monitor

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CVE-2010-2955

The cfg80211_wext_giwessid function in net/wireless/wext-compat.c in the Linux kernel before 2.6.36-rc3-next-20100831 does not properly initialize certain structure members, which allows local users to leverage an off-by-one error in the ioctl_standard_iw_point function in net/wireless/wext-core.c, and obtain potentially sensitive information from kernel heap memory, via vectors involving an SIOCGIWESSID ioctl call that specifies a large buffer size.

Published

2010-09-08T20:00:03.417

Last Modified

2025-04-11T00:51:21.963

Status

Deferred

Source

[email protected]

Severity

CVSSv2: 2.1 (LOW)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:N/A:N

Access Vector: LOCAL
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

3.9

Impact Score

2.9

Weaknesses

Type: Primary
CWE-193

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	linux	linux_kernel	< 2.6.36	Yes
Operating System	linux	linux_kernel	2.6.36	Yes
Operating System	linux	linux_kernel	2.6.36	Yes
Operating System	linux	linux_kernel	2.6.36	Yes
Operating System	opensuse	opensuse	11.1	Yes
Operating System	suse	linux_enterprise_desktop	11	Yes
Operating System	suse	linux_enterprise_real_time_extension	11	Yes
Operating System	suse	linux_enterprise_server	11	Yes
Operating System	canonical	ubuntu_linux	6.06	Yes
Operating System	canonical	ubuntu_linux	8.04	Yes
Operating System	canonical	ubuntu_linux	9.04	Yes
Operating System	canonical	ubuntu_linux	9.10	Yes
Operating System	canonical	ubuntu_linux	10.04	Yes
Operating System	canonical	ubuntu_linux	10.10	Yes

References

http://forums.grsecurity.net/viewtopic.php?f=3&t=2290 Third Party Advisory ([email protected])
http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git%3Ba=commit%3Bh=42da2f948d949efd0111309f5827bf0298bcc9a4 ([email protected])
http://grsecurity.net/~spender/wireless-infoleak-fix2.patch Broken Link ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00000.html Mailing List, Third Party Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html Mailing List, Third Party Advisory ([email protected])
http://lkml.org/lkml/2010/8/27/413 Mailing List, Patch, Third Party Advisory ([email protected])
http://lkml.org/lkml/2010/8/30/127 Mailing List, Patch, Third Party Advisory ([email protected])
http://lkml.org/lkml/2010/8/30/146 Mailing List, Patch, Third Party Advisory ([email protected])
http://lkml.org/lkml/2010/8/30/351 Mailing List, Patch, Third Party Advisory ([email protected])
http://secunia.com/advisories/41245 Third Party Advisory ([email protected])
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2 Broken Link ([email protected])
http://www.openwall.com/lists/oss-security/2010/08/31/1 Mailing List, Patch, Third Party Advisory ([email protected])
http://www.redhat.com/support/errata/RHSA-2010-0771.html Third Party Advisory ([email protected])
http://www.redhat.com/support/errata/RHSA-2010-0842.html Third Party Advisory ([email protected])
http://www.securityfocus.com/bid/42885 Third Party Advisory, VDB Entry ([email protected])
http://www.ubuntu.com/usn/USN-1000-1 Third Party Advisory ([email protected])
http://www.vupen.com/english/advisories/2011/0298 Third Party Advisory ([email protected])
https://bugzilla.redhat.com/show_bug.cgi?id=628434 Issue Tracking, Third Party Advisory ([email protected])
http://forums.grsecurity.net/viewtopic.php?f=3&t=2290 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://git.kernel.org/?p=linux/kernel/git/linville/wireless-2.6.git%3Ba=commit%3Bh=42da2f948d949efd0111309f5827bf0298bcc9a4 (af854a3a-2127-422b-91ae-364da2661108)
http://grsecurity.net/~spender/wireless-infoleak-fix2.patch Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lkml.org/lkml/2010/8/27/413 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lkml.org/lkml/2010/8/30/127 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lkml.org/lkml/2010/8/30/146 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://lkml.org/lkml/2010/8/30/351 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://secunia.com/advisories/41245 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.kernel.org/pub/linux/kernel/v2.6/next/patch-v2.6.36-rc3-next-20100831.bz2 Broken Link (af854a3a-2127-422b-91ae-364da2661108)
http://www.openwall.com/lists/oss-security/2010/08/31/1 Mailing List, Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2010-0771.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.redhat.com/support/errata/RHSA-2010-0842.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.securityfocus.com/bid/42885 Third Party Advisory, VDB Entry (af854a3a-2127-422b-91ae-364da2661108)
http://www.ubuntu.com/usn/USN-1000-1 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
http://www.vupen.com/english/advisories/2011/0298 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.redhat.com/show_bug.cgi?id=628434 Issue Tracking, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)