CVE-2010-2939
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.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
Exploits
Public proof-of-concept code below. AS-IS, for defenders and authorised testing only.
Exploit-DB
OpenSSL - 'ssl3_get_key_exchange()' Use-After-Free Memory Corruption
OS impact
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 0.9.8o-2 |
| sid | Fixed | 0.9.8o-2 |
| forky | Fixed | 0.9.8o-2 |
| bullseye | Fixed | 0.9.8o-2 |
| bookworm | Fixed | 0.9.8o-2 |
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
- http://www.mail-archive.com/openssl-dev%40openssl.org/msg28043.html
- http://www.mail-archive.com/openssl-dev%40openssl.org/msg28045.html
- http://www.mail-archive.com/openssl-dev%40openssl.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
- https://security-tracker.debian.org/tracker/CVE-2010-2939
CWEs
CWE-399
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.