CVE-2016-5696
UnknownEPSS 15.86%
Last modified
CVE-2016-5696 is a vulnerability of currently unknown severity. 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.. EPSS estimates a 15.86% chance of exploitation in the next 30 days.
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.
Metrics
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Android | <= 7.0 | |
| Oracle | Vm Server | 3.3 |
| Oracle | Vm Server | 3.4 |
| Linux | Linux Kernel | <= 4.6.6 |
References
- 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
- 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://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_cao.pdfTechnical Description
- 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
- 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://www.usenix.org/system/files/conference/usenixsecurity16/sec16_paper_cao.pdfTechnical Description
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is 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.
How severe is CVE-2016-5696?
Severity scoring for CVE-2016-5696 is pending analysis. The EPSS model estimates a 15.86% probability of exploitation in the next 30 days.
How do I fix CVE-2016-5696?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2016-5696?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST