CVE-2011-4073

Severity: medium (CVSS 4.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2011-11-17 · updated 2026-06-16
Weakness: CWE-399

Description

Use-after-free vulnerability in the cryptographic helper handler functionality in Openswan 2.3.0 through 2.6.36 allows remote authenticated users to cause a denial of service (pluto IKE daemon crash) via vectors related to the (1) quick_outI1_continue and (2) quick_outI1 functions.

Affected products

Xelerance Openswan: 2.3.0, 2.3.1, 2.4.0, 2.4.1, 2.4.2, 2.4.3 (+67)

References

http://secunia.com/advisories/46678
http://secunia.com/advisories/46681
http://secunia.com/advisories/47342
http://www.debian.org/security/2011/dsa-2374
http://www.openswan.org/download/CVE-2011-4073/CVE-2011-4073.txt
http://www.redhat.com/support/errata/RHSA-2011-1422.html
http://www.securityfocus.com/bid/50440
http://www.securitytracker.com/id?1026268
http://secunia.com/advisories/46678
http://secunia.com/advisories/46681
http://secunia.com/advisories/47342
http://www.debian.org/security/2011/dsa-2374

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