CVE-2010-2939

Severity: medium (CVSS 4.3 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 10.0% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2010-08-17 · updated 2026-06-16
Weakness: CWE-399

Description

Double free vulnerability in the ssl3_get_key_exchange function in the OpenSSL client (ssl/s3_clnt.c) in OpenSSL 1.0.0a, 0.9.8, 0.9.7, and possibly other versions, when using ECDH, allows context-dependent attackers to cause a denial of service (crash) and possibly execute arbitrary code via a crafted private key with an invalid prime. NOTE: some sources refer to this as a use-after-free issue.

Affected products

OpenSSL: 0.9.7, 0.9.8, 1.0.0a

References

http://lists.opensuse.org/opensuse-security-announce/2010-11/msg00005.html
http://marc.info/?l=bugtraq&m=130331363227777&w=2
http://seclists.org/fulldisclosure/2010/Aug/84
http://secunia.com/advisories/40906
http://secunia.com/advisories/41105
http://secunia.com/advisories/42309
http://secunia.com/advisories/42413
http://secunia.com/advisories/43312
http://security.FreeBSD.org/advisories/FreeBSD-SA-10:10.openssl.asc
http://securitytracker.com/id?1024296
http://slackware.com/security/viewer.php?l=slackware-security&y=2010&m=slackware-security.668793
http://www.debian.org/security/2010/dsa-2100

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