#VU45310 Input validation error in Linux kernel - CVE-2011-0709

Vulnerability identifier: #VU45310

Vulnerability risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2011-0709

CWE-ID: CWE-20

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Linux kernel
Operating systems & Components / Operating system

Vendor: Linux Foundation

Description

The vulnerability allows remote attackers to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can cause a denial of service (NULL pointer dereference and system crash) via an IGMP packet, related to lack of a multicast table.

Mitigation
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.

Vulnerable software versions

Linux kernel: 2.6.0 - 2.6.35

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External links
https://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=7f285fa78d4b81b8458f05e77fb6b46245121b4e
https://openwall.com/lists/oss-security/2011/02/16/1
https://openwall.com/lists/oss-security/2011/02/16/14
https://openwall.com/lists/oss-security/2011/02/16/8
https://www.kernel.org/pub/linux/kernel/v2.6/testing/v2.6.35/ChangeLog-2.6.35-rc5
https://www.securityfocus.com/bid/41432
https://www.spinics.net/lists/netdev/msg134414.html
https://www.spinics.net/lists/netdev/msg134444.html

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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.