Vulnerability CVE-2010-2939
Published: 2010-08-17   Modified: 2012-02-13

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.

See advisories in our WLB2 database:
Topic
Author
Date
Med.
OpenSSL \"ssl3_get_key_exchange()\" Use-after-free Vulnerability
Georgi Guninski
20.08.2010

Type:

CWE-399

 (Resource Management Errors)

CVSS2 => (AV:N/AC:M/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
4.3/10
2.9/10
8.6/10
Exploit range
Attack complexity
Authentication
Remote
Medium
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Openssl -> Openssl 

 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://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
http://www.mail-archive.com/openssl-dev@openssl.org/msg28043.html
http://www.mail-archive.com/openssl-dev@openssl.org/msg28045.html
http://www.mail-archive.com/openssl-dev@openssl.org/msg28049.html
http://www.openwall.com/lists/oss-security/2010/08/11/6
http://www.securityfocus.com/archive/1/516397/100/0/threaded
http://www.ubuntu.com/usn/USN-1003-1
http://www.vmware.com/security/advisories/VMSA-2011-0003.html
http://www.vupen.com/english/advisories/2010/2038
http://www.vupen.com/english/advisories/2010/2229
http://www.vupen.com/english/advisories/2010/3077
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