CVE-2011-1927

MEDIUM

Description

The ip_expire function in net/ipv4/ip_fragment.c in the Linux kernel before 2.6.39 does not properly construct ICMP_TIME_EXCEEDED packets after a timeout, which allows remote attackers to cause a denial of service (invalid pointer dereference) via crafted fragmented packets.

References

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

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=64f3b9e203bd06855072e295557dca1485a2ecba

http://www.openwall.com/lists/oss-security/2011/05/18/2

https://github.com/torvalds/linux/commit/64f3b9e203bd06855072e295557dca1485a2ecba

Details

Source: MITRE

Published: 2012-06-13

Updated: 2012-06-13

Risk Information

CVSS v2.0

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM