#VU95255 Null pointer dereference in Linux kernel - CVE-2007-2876
Vulnerability identifier: #VU95255
Vulnerability risk: Low
CVSSv4.0: 4.9 [CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]
CVE-ID: CVE-2007-2876
CWE-ID:
CWE-476
Exploitation vector: Local 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 perform a denial of service (DoS) attack.
The sctp_new function in (1) ip_conntrack_proto_sctp.c and (2) nf_conntrack_proto_sctp.c in Netfilter in Linux kernel 2.6 before 2.6.20.13, and 2.6.21.x before 2.6.21.4, allows remote attackers to cause a denial of service by causing certain invalid states that trigger a NULL pointer dereference.
Mitigation
Install update from vendor's repository.
Vulnerable software versions
Linux kernel: All versions
External links
https://marc.info/?l=linux-kernel&m=118128610219959&w=2
https://marc.info/?l=linux-kernel&m=118128622431272&w=2
https://osvdb.org/37112
https://rhn.redhat.com/errata/RHSA-2007-0488.html
https://secunia.com/advisories/25838
https://secunia.com/advisories/25961
https://secunia.com/advisories/26133
https://secunia.com/advisories/26139
https://secunia.com/advisories/26289
https://secunia.com/advisories/26450
https://secunia.com/advisories/26620
https://secunia.com/advisories/26664
https://secunia.com/advisories/26760
https://secunia.com/advisories/27227
https://support.avaya.com/elmodocs2/security/ASA-2007-287.htm
https://www.debian.org/security/2007/dsa-1356
https://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.21.4
https://www.mandriva.com/security/advisories?name=MDKSA-2007:171
https://www.mandriva.com/security/advisories?name=MDKSA-2007:196
https://www.novell.com/linux/security/advisories/2007_43_kernel.html
https://www.novell.com/linux/security/advisories/2007_51_kernel.html
https://www.novell.com/linux/security/advisories/2007_53_kernel.html
https://www.redhat.com/support/errata/RHSA-2007-0705.html
https://www.securityfocus.com/bid/24376
https://www.ubuntu.com/usn/usn-486-1
https://www.ubuntu.com/usn/usn-489-1
https://www.ubuntu.com/usn/usn-510-1
https://www.vupen.com/english/advisories/2007/2105
https://exchange.xforce.ibmcloud.com/vulnerabilities/34777
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10116
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the local network (LAN).
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
