CVE-2011-4326 : The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.

The udp6_ufo_fragment function in net/ipv6/udp.c in the Linux kernel before 2.6.39, when a certain UDP Fragmentation Offload (UFO) configuration is enabled, allows remote attackers to cause a denial of service (system crash) by sending fragmented IPv6 UDP packets to a bridge device.

Published 2012-05-17 11:00:34

Updated 2023-02-13 01:21:45

Source Red Hat, Inc.

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2011-4326

Linux » Linux Kernel
Versions before (<) 2.6.39
cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*
Matching versions
Avaya » 96x1 Ip Deskphone Firmware
Versions from including (>=) 6.0.0 and up to, including, (<=) 6.6.0
cpe:2.3:o:avaya:96x1_ip_deskphone_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: Avaya » 96x1 Ip Deskphone » Version: N/A

Threat overview for CVE-2011-4326

Top countries where our scanners detected CVE-2011-4326

Top open port discovered on systems with this issue 49152

IPs affected by CVE-2011-4326 1,556

Threat actors abusing to this issue? Yes

Find out if you^* are affected by CVE-2011-4326!

^*Directly or indirectly through your vendors, service providers and 3rd parties. Powered by attack surface intelligence from SecurityScorecard.

Exploit prediction scoring system (EPSS) score for CVE-2011-4326

EPSS FAQ

0.54%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 77 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2011-4326

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source	First Seen
7.1	HIGH	AV:N/AC:M/Au:N/C:N/I:N/A:C	8.6	6.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Complete

CWE ids for CVE-2011-4326

CWE-399

Assigned by: nvd@nist.gov (Primary)

References for CVE-2011-4326

http://ftp.osuosl.org/pub/linux/kernel/v2.6/ChangeLog-2.6.39

404 Not Found
Broken Link

CVEs referencing this url
https://github.com/torvalds/linux/commit/a9cf73ea7ff78f52662c8658d93c226effbbedde

ipv6: udp: fix the wrong headroom check · torvalds/linux@a9cf73e · GitHub
Patch;Third Party Advisory
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=a9cf73ea7ff78f52662c8658d93c226effbbedde
http://www.openwall.com/lists/oss-security/2011/11/21/10

oss-security - Re: CVE Request -- kernel: wrong headroom check in udp6_ufo_fragment()
Mailing List
https://bugzilla.redhat.com/show_bug.cgi?id=682066

682066 – panic on ipv6 udp-fragmentation-offload of bridge device
Exploit;Issue Tracking;Third Party Advisory
http://www.securityfocus.com/bid/50751

Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability
Third Party Advisory;VDB Entry
https://bugzilla.redhat.com/show_bug.cgi?id=755584

755584 – (CVE-2011-4326) CVE-2011-4326 kernel: wrong headroom check in udp6_ufo_fragment()
Issue Tracking;Third Party Advisory
http://downloads.avaya.com/css/P8/documents/100156038

ASA-2012-044 (WIND00319165 WIND00319166)
Third Party Advisory

CVEs referencing this url