CVE-2011-3188
CRITICAL severity · CVSS 9.1
9.1CVSS CRITICAL
Summary
The (1) IPv4 and (2) IPv6 implementations in the Linux kernel before 3.1 use a modified MD4 algorithm to generate sequence numbers and Fragment Identification values, which makes it easier for remote attackers to cause a denial of service (disrupted networking) or hijack network sessions by predicting these values and sending crafted packets.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactNone
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)6%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Official patch: http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1 ↗
Additional information
- NVD record
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1Patch
- http://www.openwall.com/lists/oss-security/2011/08/23/2Patch
- https://bugzilla.redhat.com/show_bug.cgi?id=732658Patch
- https://github.com/torvalds/linux/commit/6e5714eaf77d79ae1c8b47e3e040ff5411b717ecPatch
- https://github.com/torvalds/linux/commit/bc0b96b54a21246e377122d54569eef71cec535fPatch
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=6e5714eaf77d79ae1c8b47e3e040ff5411b717ec
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3Bh=bc0b96b54a21246e377122d54569eef71cec535f
- http://marc.info/?l=bugtraq&m=139447903326211&w=2Advisory