VulnerabilityModified
CVE-2016-5696
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.
MEDIUM 4.8EPSS 15.1%
Does this matter?
EPSS puts the probability of exploitation in the next 30 days at 15.1%, higher than 97% of all known CVEs. Patch or mitigate before the next change window.
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.
- CVSS 3.0
- 4.8 MEDIUMCVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
- EPSS
- 15.07% probability · 97th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-200
- Affected
- google/android · oracle/vm server · linux/linux kernel
- Source
- cve@mitre.org
References
- http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=75ff39ccc1bd5d3c455b6822ab09e533c551f758Issue Tracking, Patch
- 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.htmlThird Party Advisory
- http://www.openwall.com/lists/oss-security/2016/07/12/2Mailing List, Third Party Advisory
- http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.htmlThird Party Advisory
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.htmlVendor Advisory
- http://www.prnewswire.com/news-releases/mitnick-attack-reappears-at-geekpwn-macau-contest-300270779.htmlTechnical Description
- 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
- https://bugzilla.redhat.com/show_bug.cgi?id=1354708Issue Tracking
- https://github.com/Gnoxter/mountain_goatExploit, Third Party Advisory
- https://github.com/torvalds/linux/commit/75ff39ccc1bd5d3c455b6822ab09e533c551f758Issue Tracking, Patch
- https://kc.mcafee.com/corporate/index?page=content&id=SB10167
- https://security.paloaltonetworks.com/CVE-2016-5696
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.