#VU95739 Memory corruption in Linux kernel - CVE-2008-1673
Vulnerability identifier: #VU95739
Vulnerability risk: Low
CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2008-1673
CWE-ID:
CWE-119
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Linux kernel
Operating systems & Components /
Operating system
Vendor: Linux Foundation
Description
The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.
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.
Mitigation
Install update from vendor's repository.
Vulnerable software versions
Linux kernel: All versions
External links
https://kernel.org/pub/linux/kernel/v2.4/ChangeLog-2.4.36.6
https://kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.25.5
https://bugzilla.redhat.com/show_bug.cgi?id=443962
https://www.debian.org/security/2008/dsa-1592
https://www.securityfocus.com/bid/29589
https://secunia.com/advisories/30580
https://www.securitytracker.com/id?1020210
https://secunia.com/advisories/30000
https://secunia.com/advisories/30658
https://www.ubuntu.com/usn/usn-625-1
https://wiki.rpath.com/wiki/Advisories:rPSA-2008-0189
https://secunia.com/advisories/30644
https://www.mandriva.com/security/advisories?name=MDVSA-2008:174
https://www.redhat.com/archives/fedora-package-announce/2008-June/msg00587.html
https://secunia.com/advisories/31107
https://lists.opensuse.org/opensuse-security-announce/2008-07/msg00012.html
https://www.mandriva.com/security/advisories?name=MDVSA-2008:113
https://lists.opensuse.org/opensuse-security-announce/2008-07/msg00007.html
https://lists.opensuse.org/opensuse-security-announce/2008-10/msg00001.html
https://secunia.com/advisories/31836
https://lists.opensuse.org/opensuse-security-announce/2008-11/msg00001.html
https://secunia.com/advisories/32759
https://lists.opensuse.org/opensuse-security-announce/2008-10/msg00000.html
https://secunia.com/advisories/32104
https://secunia.com/advisories/32103
https://lists.opensuse.org/opensuse-security-announce/2008-10/msg00003.html
https://www.vupen.com/english/advisories/2008/1770
https://lists.opensuse.org/opensuse-security-announce/2008-10/msg00008.html
https://secunia.com/advisories/32370
https://secunia.com/advisories/30982
https://exchange.xforce.ibmcloud.com/vulnerabilities/42921
https://www.securityfocus.com/archive/1/493300/100/0/threaded
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=ddb2c43594f22843e9f3153da151deaba1a834c5
https://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.25.y.git%3Ba=commit%3Bh=33afb8403f361919aa5c8fe1d0a4f5ddbfbbea3c
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
