CVE-2015-5879

Description

XNU in the kernel in Apple iOS before 9 does not properly validate the headers of TCP packets, which allows remote attackers to bypass the sequence-number protection mechanism and cause a denial of service (TCP connection disruption) via a crafted header.

Category

5.0
CVSS
Severity: Medium
CVSS 2.0 •
EPSS 1.01% Top 25%
Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com Vendor Advisory apple.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.securitytracker.com/id/1033609 vdb entry
https://support.apple.com/HT205212 vendor advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00008.html vendor advisory
http://www.securityfocus.com/bid/76764 vdb entry
https://support.apple.com/HT205267 vendor advisory
http://lists.apple.com/archives/security-announce/2015/Sep/msg00001.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2015-5879?
CVE-2015-5879 has been scored as a medium severity vulnerability.
How to fix CVE-2015-5879?
To fix CVE-2015-5879, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2015-5879 being actively exploited in the wild?
It is possible that CVE-2015-5879 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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