CVE-2011-2391

Severity: medium (CVSS 6.1 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.2% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2013-09-19 · updated 2026-06-16
Weakness: CWE-20

Description

The IPv6 implementation in the kernel in Apple iOS before 7 allows remote attackers to cause a denial of service (CPU consumption) via crafted ICMPv6 packets.

Affected products

Apple Iphone Os: through 6.1.4; 1.0.0, 1.0.1, 1.0.2, 1.1.0, 1.1.1, 1.1.2 (+41)
Apple iTunes for Windows: through 12.1
macOS: through 10.9.5

References

http://archives.neohapsis.com/archives/bugtraq/2014-09/0106.html
http://archives.neohapsis.com/archives/bugtraq/2014-09/0107.html
http://archives.neohapsis.com/archives/bugtraq/2014-10/0101.html
http://lists.apple.com/archives/security-announce/2013/Oct/msg00004.html
http://lists.apple.com/archives/security-announce/2013/Sep/msg00006.html
http://lists.apple.com/archives/security-announce/2015/Jan/msg00003.html
http://osvdb.org/97438
http://secunia.com/advisories/54886
http://support.apple.com/HT204244
http://support.apple.com/kb/HT5934
http://support.apple.com/kb/HT6441
http://support.apple.com/kb/HT6442

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