CVE-2016-5696
medium
CVSS v3
4.8
CVSS v4 NEW
โ
VIR risk
4.8
Description
net/ipv4/tcp_input.c in the Linux kernel before 4.7 does not properly determine the rate of challenge ACK segments, which makes it easier for remote attackers to hijack TCP sessions via a blind in-window attack.
Predictions
Exploit likelihood
58%
Patch ETA
โ
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ if you've already worked around this in production โ publish your fix to the community-verified tier.
โ Propose a mitigation on Community โ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
Linux kernel Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| โ | Affected | โ |
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| โ | Affected | โ |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 4.7.2-1 |
| sid | Fixed | 4.7.2-1 |
| forky | Fixed | 4.7.2-1 |
| bullseye | Fixed | 4.7.2-1 |
| bookworm | Fixed | 4.7.2-1 |
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=75ff39ccc1bd5d3c455b6822ab09e533c551f758
- http://rhn.redhat.com/errata/RHSA-2016-1631.html
- http://rhn.redhat.com/errata/RHSA-2016-1632.html
- http://rhn.redhat.com/errata/RHSA-2016-1633.html
- http://rhn.redhat.com/errata/RHSA-2016-1657.html
- http://rhn.redhat.com/errata/RHSA-2016-1664.html
- http://rhn.redhat.com/errata/RHSA-2016-1814.html
- http://rhn.redhat.com/errata/RHSA-2016-1815.html
- http://rhn.redhat.com/errata/RHSA-2016-1939.html
- http://source.android.com/security/bulletin/2016-10-01.html
- http://www.openwall.com/lists/oss-security/2016/07/12/2
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.prnewswire.com/news-releases/mitnick-attack-reappears-at-geekpwn-macau-contest-300270779.html
- http://www.securityfocus.com/bid/91704
- http://www.securitytracker.com/id/1036625
- http://www.ubuntu.com/usn/USN-3070-1
- http://www.ubuntu.com/usn/USN-3070-2
- http://www.ubuntu.com/usn/USN-3070-3
- http://www.ubuntu.com/usn/USN-3070-4
- http://www.ubuntu.com/usn/USN-3071-1
- http://www.ubuntu.com/usn/USN-3071-2
- http://www.ubuntu.com/usn/USN-3072-1
- http://www.ubuntu.com/usn/USN-3072-2
- https://bto.bluecoat.com/security-advisory/sa131
CWEs
CWE-200
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.