CVE-2011-3259

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-10-14 · updated 2026-06-16
Weakness: CWE-399

Description

The kernel in Apple iOS before 5 and Apple TV before 4.4 does not properly recover memory allocated for incomplete TCP connections, which allows remote attackers to cause a denial of service (resource consumption) by making many connection attempts.

Affected products

Apple TV: 4.0, 4.1, 4.2, 4.3
Apple Iphone Os: 3.0, 3.1, 3.1.2, 3.1.3, 3.2, 3.2.1 (+13)

References

http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00002.html
http://support.apple.com/kb/HT4999
http://support.apple.com/kb/HT5001
http://www.securityfocus.com/bid/50087
https://exchange.xforce.ibmcloud.com/vulnerabilities/70530
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00001.html
http://lists.apple.com/archives/Security-announce/2011//Oct/msg00002.html
http://support.apple.com/kb/HT4999
http://support.apple.com/kb/HT5001
http://www.securityfocus.com/bid/50087
https://exchange.xforce.ibmcloud.com/vulnerabilities/70530

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