CVE-2008-1673 Detail

Current Description

The asn1 implementation in (a) the Linux kernel 2.4 before 2.4.36.6 and 2.6 before 2.6.25.5, as used in the cifs and ip_nat_snmp_basic modules; and (b) the gxsnmp package; does not properly validate length values during decoding of ASN.1 BER data, which allows remote attackers to cause a denial of service (crash) or execute arbitrary code via (1) a length greater than the working buffer, which can lead to an unspecified overflow; (2) an oid length of zero, which can lead to an off-by-one error; or (3) an indefinite length for a primitive encoding.


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Severity



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Vendor Statements (disclaimer)

Official Statement fromRed Hat (09/08/2009)

Not vulnerable. This issue did not affect the versions of Linux kernel as shipped with Red Hat Enterprise Linux 2, 3, 4, 5 or Red Hat Enterprise MRG. The but existed on Red Hat Enterprise Linux 3, 4, and 5. However, this is only a security issue if the SLOB or SLUB memory allocators were used (introduced in Linux kernel versions 2.6.16 and 2.6.22, respectively). All Red Hat Enterprise Linux and Red Hat Enterprise MRG kernels use the SLAB memory allocator, which in this case, cannot be exploited to allow arbitrary code execution. As a preventive measure, the underlying bug was addressed in Red Hat Enterprise Linux 3, 4, and 5, via the advisories RHSA-2008:0973, RHSA-2008:0508, and RHSA-2008:0519, respectively.

References to Advisories, Solutions, and Tools

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Hyperlink Resource
http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.25.y.git;a=commit;h=33afb8403f361919aa5c8fe1d0a4f5ddbfbbea3c
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ddb2c43594f22843e9f3153da151deaba1a834c5
http://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.6
http://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.5
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2008-07/msg00012.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
http://lists.opensuse.org/opensuse-security-announce/2008-10/msg00008.html
http://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
http://wiki.rpath.com/wiki/Advisories:rPSA-2008-0189
http://www.mandriva.com/security/advisories?name=MDVSA-2008:113
http://www.mandriva.com/security/advisories?name=MDVSA-2008:174
http://www.securityfocus.com/archive/1/493300/100/0/threaded
http://www.securityfocus.com/bid/29589 Patch 
http://www.securitytracker.com/id?1020210
http://www.ubuntu.com/usn/usn-625-1
http://www.vupen.com/english/advisories/2008/1770
https://bugzilla.redhat.com/show_bug.cgi?id=443962
https://exchange.xforce.ibmcloud.com/vulnerabilities/42921
https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00587.html

Weakness Enumeration

CWE-ID CWE Name Source
CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer cwe source acceptance level NIST  

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2008-1673
NVD Published Date:
06/09/2008
NVD Last Modified:
10/30/2018
Source:
MITRE