ISS X-Force Database: linux-sockaddr-memory-leak(25425): Linux kernel sockaddr_in.sin

Linux kernel sockaddr_in.sin_zero kernel memory leak

linux-sockaddr-memory-leak (25425)

Low Risk

Description:

Linux kernel could allow a local attacker to obtain sensitive information. In certain situations net/ipv4/netfilter/ip_conntrack_core.c, net/ipv4/af_inet.c and net/ipv4/netfilter/nf_conntrack_l3proto_ipv4.c fail to properly clear sockaddr_in.sin_zero prior to returning IPv4 socket names from the getsockopt(), getsockname(), getpeername(), and accept() functions. This would result in 6 bytes of kernel memory being leaked to userspace, allowing a local attacker to possibly obtain sensitive information.

Platforms Affected:

Canonical, Ubuntu 5.04
Canonical, Ubuntu 5.10
Debian, Debian Linux 3.1
Linux, Kernel 2.4.0
Linux, Kernel 2.4.0 test1
Linux, Kernel 2.4.0 test10
Linux, Kernel 2.4.0 test11
Linux, Kernel 2.4.0 test12
Linux, Kernel 2.4.0 test2
Linux, Kernel 2.4.0 test3
Linux, Kernel 2.4.0 test4
Linux, Kernel 2.4.0 test5
Linux, Kernel 2.4.0 test6
Linux, Kernel 2.4.0 test7
Linux, Kernel 2.4.0 test8
Linux, Kernel 2.4.0 test9
Linux, Kernel 2.4.1
Linux, Kernel 2.4.10
Linux, Kernel 2.4.11
Linux, Kernel 2.4.11 pre2
Linux, Kernel 2.4.11 pre1
Linux, Kernel 2.4.11 pre3
Linux, Kernel 2.4.12
Linux, Kernel 2.4.13
Linux, Kernel 2.4.14
Linux, Kernel 2.4.15
Linux, Kernel 2.4.16
Linux, Kernel 2.4.17
Linux, Kernel 2.4.18 pre9
Linux, Kernel 2.4.18 pre8
Linux, Kernel 2.4.18 pre7
Linux, Kernel 2.4.18 pre6
Linux, Kernel 2.4.18 pre5
Linux, Kernel 2.4.18
Linux, Kernel 2.4.18 pre4
Linux, Kernel 2.4.18 pre1
Linux, Kernel 2.4.18 pre2
Linux, Kernel 2.4.18 pre3
Linux, Kernel 2.4.19
Linux, Kernel 2.4.19 pre1
Linux, Kernel 2.4.19 pre2
Linux, Kernel 2.4.19 pre3
Linux, Kernel 2.4.19 pre4
Linux, Kernel 2.4.19 pre5
Linux, Kernel 2.4.19 pre6
Linux, Kernel 2.4.2
Linux, Kernel 2.4.20
Linux, Kernel 2.4.21 pre3
Linux, Kernel 2.4.21 pre1
Linux, Kernel 2.4.21 pre4
Linux, Kernel 2.4.21 pre5
Linux, Kernel 2.4.21
Linux, Kernel 2.4.21 pre6
Linux, Kernel 2.4.21 pre2
Linux, Kernel 2.4.21 pre7
Linux, Kernel 2.4.22
Linux, Kernel 2.4.22 pre10
Linux, Kernel 2.4.22 pre9
Linux, Kernel 2.4.22 pre8
Linux, Kernel 2.4.22 pre7
Linux, Kernel 2.4.22 pre6
Linux, Kernel 2.4.22 pre5
Linux, Kernel 2.4.22 pre4
Linux, Kernel 2.4.22 pre3
Linux, Kernel 2.4.22 pre2
Linux, Kernel 2.4.22 pre1
Linux, Kernel 2.4.23 pre6
Linux, Kernel 2.4.23 pre3
Linux, Kernel 2.4.23 pre1
Linux, Kernel 2.4.23
Linux, Kernel 2.4.23 pre9
Linux, Kernel 2.4.23 pre4
Linux, Kernel 2.4.23 pre5
Linux, Kernel 2.4.23 ow2
Linux, Kernel 2.4.23 pre7
Linux, Kernel 2.4.23 pre8
Linux, Kernel 2.4.23 pre2
Linux, Kernel 2.4.24
Linux, Kernel 2.4.24 ow1
Linux, Kernel 2.4.25
Linux, Kernel 2.4.26
Linux, Kernel 2.4.27 pre3
Linux, Kernel 2.4.27 pre1
Linux, Kernel 2.4.27 pre2
Linux, Kernel 2.4.27 pre4
Linux, Kernel 2.4.27
Linux, Kernel 2.4.27 pre5
Linux, Kernel 2.4.28
Linux, Kernel 2.4.29 rc1
Linux, Kernel 2.4.29 rc2
Linux, Kernel 2.4.29
Linux, Kernel 2.4.3
Linux, Kernel 2.4.3 pre3
Linux, Kernel 2.4.3 pre1
Linux, Kernel 2.4.3 pre2
Linux, Kernel 2.4.30 rc1
Linux, Kernel 2.4.30 rc2
Linux, Kernel 2.4.30 rc3
Linux, Kernel 2.4.30
Linux, Kernel 2.4.31
Linux, Kernel 2.4.31 pre1
Linux, Kernel 2.4.32 pre1
Linux, Kernel 2.4.32 pre2
Linux, Kernel 2.4.32
Linux, Kernel 2.4.33 pre1
Linux, Kernel 2.4.4
Linux, Kernel 2.4.5
Linux, Kernel 2.4.6
Linux, Kernel 2.4.7
Linux, Kernel 2.4.8
Linux, Kernel 2.4.9
Linux, Kernel 2.4.9 pre5
Linux, Kernel 2.4.9 pre1
Linux, Kernel 2.4.9 pre2
Linux, Kernel 2.4.9 pre3
Linux, Kernel 2.4.9 pre4
Linux, Kernel 2.6.0 test8
Linux, Kernel 2.6.0 test9
Linux, Kernel 2.6.0 test7
Linux, Kernel 2.6.0 test6
Linux, Kernel 2.6.0 test5
Linux, Kernel 2.6.0
Linux, Kernel 2.6.0 test3
Linux, Kernel 2.6.0 test2
Linux, Kernel 2.6.0 test11
Linux, Kernel 2.6.0 test10
Linux, Kernel 2.6.0 test1
Linux, Kernel 2.6.0 test4
Linux, Kernel 2.6.1 rc2
Linux, Kernel 2.6.1 rc3
Linux, Kernel 2.6.1 rc1
Linux, Kernel 2.6.1
Linux, Kernel 2.6.10 rc3
Linux, Kernel 2.6.10
Linux, Kernel 2.6.10 rc2
Linux, Kernel 2.6.10 rc1
Linux, Kernel 2.6.11 rc3
Linux, Kernel 2.6.11 rc4
Linux, Kernel 2.6.11 rc2
Linux, Kernel 2.6.11 rc5
Linux, Kernel 2.6.11 rc1
Linux, Kernel 2.6.11
Linux, Kernel 2.6.11.1
Linux, Kernel 2.6.11.10
Linux, Kernel 2.6.11.11
Linux, Kernel 2.6.11.12
Linux, Kernel 2.6.11.2
Linux, Kernel 2.6.11.3
Linux, Kernel 2.6.11.4
Linux, Kernel 2.6.11.5
Linux, Kernel 2.6.11.6
Linux, Kernel 2.6.11.7
Linux, Kernel 2.6.11.8
Linux, Kernel 2.6.11.9
Linux, Kernel 2.6.12 rc6
Linux, Kernel 2.6.12 rc5
Linux, Kernel 2.6.12 rc4
Linux, Kernel 2.6.12 rc3
Linux, Kernel 2.6.12 rc2
Linux, Kernel 2.6.12 rc1
Linux, Kernel 2.6.12
Linux, Kernel 2.6.12.1
Linux, Kernel 2.6.12.12
Linux, Kernel 2.6.12.2
Linux, Kernel 2.6.12.22
Linux, Kernel 2.6.12.3
Linux, Kernel 2.6.12.4
Linux, Kernel 2.6.12.5
Linux, Kernel 2.6.12.6
Linux, Kernel 2.6.13 rc7
Linux, Kernel 2.6.13 rc6
Linux, Kernel 2.6.13 rc5
Linux, Kernel 2.6.13 rc4
Linux, Kernel 2.6.13 rc3
Linux, Kernel 2.6.13 rc2
Linux, Kernel 2.6.13 rc1
Linux, Kernel 2.6.13
Linux, Kernel 2.6.13.1
Linux, Kernel 2.6.13.2
Linux, Kernel 2.6.13.3
Linux, Kernel 2.6.13.4
Linux, Kernel 2.6.13.5
Linux, Kernel 2.6.14 rc1
Linux, Kernel 2.6.14 rc3
Linux, Kernel 2.6.14 rc4
Linux, Kernel 2.6.14 rc5
Linux, Kernel 2.6.14
Linux, Kernel 2.6.14 rc2
Linux, Kernel 2.6.14.1
Linux, Kernel 2.6.14.2
Linux, Kernel 2.6.14.3
Linux, Kernel 2.6.14.4
Linux, Kernel 2.6.14.5
Linux, Kernel 2.6.14.6
Linux, Kernel 2.6.14.7
Linux, Kernel 2.6.15 rc2
Linux, Kernel 2.6.15
Linux, Kernel 2.6.15 rc3
Linux, Kernel 2.6.15 rc4
Linux, Kernel 2.6.15 rc5
Linux, Kernel 2.6.15 rc6
Linux, Kernel 2.6.15 rc7
Linux, Kernel 2.6.15 rc1
Linux, Kernel 2.6.15.1
Linux, Kernel 2.6.15.11
Linux, Kernel 2.6.15.2
Linux, Kernel 2.6.15.3
Linux, Kernel 2.6.15.4
Linux, Kernel 2.6.15.5
Linux, Kernel 2.6.15.6
Linux, Kernel 2.6.15.7
Linux, Kernel 2.6.2 rc3
Linux, Kernel 2.6.2 rc2
Linux, Kernel 2.6.2 rc1
Linux, Kernel 2.6.2
Linux, Kernel 2.6.3 rc1
Linux, Kernel 2.6.3 rc2
Linux, Kernel 2.6.3 rc3
Linux, Kernel 2.6.3 rc4
Linux, Kernel 2.6.3
Linux, Kernel 2.6.4 rc2
Linux, Kernel 2.6.4
Linux, Kernel 2.6.4 rc3
Linux, Kernel 2.6.4 rc1
Linux, Kernel 2.6.5 rc1
Linux, Kernel 2.6.5
Linux, Kernel 2.6.5 rc3
Linux, Kernel 2.6.5 rc2
Linux, Kernel 2.6.6 rc1
Linux, Kernel 2.6.6 rc2
Linux, Kernel 2.6.6
Linux, Kernel 2.6.6 rc3
Linux, Kernel 2.6.7 rc2
Linux, Kernel 2.6.7 rc1
Linux, Kernel 2.6.7 rc3
Linux, Kernel 2.6.7
Linux, Kernel 2.6.8
Linux, Kernel 2.6.8 rc1
Linux, Kernel 2.6.8 rc2
Linux, Kernel 2.6.8 rc3
Linux, Kernel 2.6.8 rc4
Linux, Kernel 2.6.8.1
Linux, Kernel 2.6.9
Linux, Kernel 2.6.9 rc4
Linux, Kernel 2.6.9 rc1
Linux, Kernel 2.6.9 rc2
Linux, Kernel 2.6.9 rc3
MandrakeSoft, Mandrake Linux 2006 X86_64
MandrakeSoft, Mandrake Linux 2006
MandrakeSoft, Mandrake Linux Corporate Server 3.0
MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
MandrakeSoft, Mandrake Multi Network Firewall 2.0
Novell, UnitedLinux 1.0
RedHat, Enterprise Linux 2.1 WS
RedHat, Enterprise Linux 2.1 AS
RedHat, Enterprise Linux 2.1 ES
RedHat, Enterprise Linux 3 WS
RedHat, Enterprise Linux 3 Desktop
RedHat, Enterprise Linux 3 AS
RedHat, Enterprise Linux 3 ES
RedHat, Enterprise Linux 4 WS
RedHat, Enterprise Linux 4 Desktop
RedHat, Enterprise Linux 4 ES
RedHat, Enterprise Linux 4 AS
RedHat, Linux Advanced Workstation 2.1 Itanium
SuSE, Linux Enterprise Server 8
SuSE, Linux Enterprise Server 9
SuSE, SuSE Linux 10.0
SuSE, SuSE Linux 9.1
SuSE, SuSE Linux 9.2
SuSE, SuSE Linux 9.3
SuSE, SuSE Linux Desktop 1.0
SuSE, SuSE SLES 9
VMware, ESX Server 2.0.2
VMware, ESX Server 2.1.3
VMware, ESX Server 2.5.3
VMware, ESX Server 2.5.4

Remedy:

Upgrade to the latest version of Linux kernel (2.6.16.19 or later), available from The Linux Kernel Archives. See References.

For VMware 2.5.3:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-253-200610-patch. See References.

For Debian GNU/Linux:
Refer to DSA-1097-1 or DSA-1184-1 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux 2.1:
Refer to RHSA-2006:0579-12 and RHSA-2006:0580-7 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux 3:
Refer to RHSA-2006:0437-22 for patch, upgrade, or suggested workaround information. See References.

For Red Hat Linux 4:
Refer to RHSA-2006:0575-22 for patch, upgrade, or suggested workaround information. See References.

For VMware ESX Server 2.0.2:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-202-200610-patch. See References.

For VMware ESX Server 2.1.3:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-213-200610-patch. See References.

For VMware ESX Server 2.5.4:
Apply the patch for this vulnerability, as listed in the VMware Advisory esx-254-200610-patch. See References.

For SUSE Linux:
Refer to SUSE-SA:2006:028 for patch, upgrade, or suggested workaround information. See References.

For other distributions:
Contact your vendor for upgrade or patch information.

Consequences:

Obtain Information

References:

Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:20 CST, VMSA-2006-0005 - VMware ESX Server 2.5.4 Upgrade Patch 1 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0223.html.
Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:38 CST, VMSA-2006-0006 - VMware ESX Server 2.5.3 Upgrade Patch 4 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0226.html.
Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:22:54 CST, VMSA-2006-0007 - VMware ESX Server 2.1.3 Upgrade Patch 2 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0224.html.
Full-Disclosure Mailing List, Mon Nov 13 2006 - 17:23:03 CST, VMSA-2006-0008 - VMware ESX Server 2.0.2 Upgrade Patch 2 at http://archives.neohapsis.com/archives/fulldisclosure/2006-11/0225.html.
linux-netdev Mailing List, 2006-03-04 13:53:16, BUG: Small information leak in SO_ORIGINAL_DST (2.4 and 2.6) and at http://marc.theaimsgroup.com/?l=linux-netdev&m=114148078223594&w=2.
The The Linux Kernel Archives, [PATCH] Fix small information leak in SO_ORIGINAL_DST and getname() at http://www.kernel.org/git/?p=linux/kernel/git/marcelo/linux-2.4.git;a=commit;h=09d3b3dcfa80c9094f1748c1be064b9326c9ef2b.
VMware Advisory esx-253-200610-patch, VMware ESX Server 2.5.3 Upgrade Patch 4 (for 2.5.3 Systems Only) at http://www.vmware.com/download/esx/esx-253-200610-patch.html.
VMware Web site, VMware ESX Server 2.5.4 Upgrade Patch 1 (for 2.5.4 Systems Only) at http://www.vmware.com/download/esx/esx-254-200610-patch.html.
VMware Web site, VMware ESX Server 2.0.2 Upgrade Patch 2 (for 2.0.2 Systems Only) at http://www.vmware.com/download/esx/esx-202-200610-patch.html.
VMware Web site, VMware ESX Server 2.1.3 Upgrade Patch 2 (for 2.1.3 Systems Only) at http://www.vmware.com/download/esx/esx-213-200610-patch.html.
ASA-2006-143: kernel security update (RHSA-2006-0580)
ASA-2006-180: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8 (RHSA-2006-0437)
ASA-2006-200: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4 (RHSA-2006-0575)
BID-17203: Linux Kernel Ssockaddr_In.Sin_Zero Kernel Memory Disclosure Vulnerabilities
CVE-2006-1342: net/ipv4/af_inet.c in Linux kernel 2.4 does not clear sockaddr_in.sin_zero before returning IPv4 socket names from the (1) getsockname, (2) getpeername, and (3) accept functions, which allows local users to obtain portions of potentially sensitive memory.
DSA-1097: kernel-source-2.4.27 -- several vulnerabilities
DSA-1184: kernel-source-2.6.8 -- several vulnerabilities
MDKSA-2006:123: Updated kernel packages fixes multiple vulnerabilities
MDKSA-2006:150: Updated kernel packages fix multiple vulnerabilities
OSVDB ID: 29841: Linux Kernel net/ipv4/netfilter/ IPv4 Socket Name Return Arbitrary Memory Disclosure
RHSA-2006-0437: Updated kernel packages for Red Hat Enterprise Linux 3 Update 8
RHSA-2006-0575: Updated kernel packages available for Red Hat Enterprise Linux 4 Update 4
RHSA-2006-0579: kernel security update
RHSA-2006-0580: kernel security update
SA19357: Linux Kernel IPv4 "sockaddr_in.sin_zero" Information Disclosure
SA21983: Avaya Products Linux Kernel Multiple Vulnerabilities
SA22417: Avaya Products Linux Kernel Multiple Vulnerabilities
SA22875: VMware ESX Server Multiple Vulnerabilities
SUSE-SA:2006:028: various kernel security problems
USN-281-1: Linux kernel vulnerabilities
VUPEN/ADV-2006-2071: Linux Kernel SO_ORIGINAL_DST Option Information Disclosure Vulnerability
VUPEN/ADV-2006-4502: VMware ESX Server Security Update Fixes Multiple Buffer Overflow Vulnerabilities

Reported:

Mar 04, 2006

The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (IBM Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.

For corrections or additions please email xforce@iss.net

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