OpenSSL 0.9.8f and 0.9.8g allows remote attackers to cause a denial of service (crash) via a TLS handshake that omits the Server Key Exchange message and uses particular cipher suites, which triggers a NULL pointer dereference.
Weakness
The product dereferences a pointer that it expects to be valid but is NULL.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Openssl | Openssl | 0.9.8f (including) | 0.9.8f (including) |
| Openssl | Openssl | 0.9.8g (including) | 0.9.8g (including) |
| Openssl | Ubuntu | devel | * |
| Openssl | Ubuntu | hardy | * |
| Openssl | Ubuntu | upstream | * |
Potential Mitigations
References
- http://cert.fi/haavoittuvuudet/2008/advisory-openssl.html
- http://secunia.com/advisories/30405
- http://secunia.com/advisories/30460
- http://secunia.com/advisories/30825
- http://secunia.com/advisories/30852
- http://secunia.com/advisories/30868
- http://secunia.com/advisories/31228
- http://secunia.com/advisories/31288
- http://security.gentoo.org/glsa/glsa-200806-08.xml
- http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2008\u0026m=slackware-security.562004
- http://sourceforge.net/project/shownotes.php?release_id=615606
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL\u0026id=738400
- http://www.kb.cert.org/vuls/id/520586
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:107
- http://www.openssl.org/news/secadv_20080528.txt
- http://www.securityfocus.com/archive/1/492932/100/0/threaded
- http://www.securityfocus.com/bid/29405
- http://www.securitytracker.com/id?1020122
- http://www.ubuntu.com/usn/usn-620-1
- http://www.vupen.com/english/advisories/2008/1680
- http://www.vupen.com/english/advisories/2008/1937/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42667
- https://www.redhat.com/archives/fedora-package-announce/2008-May/msg01029.html
- http://cert.fi/haavoittuvuudet/2008/advisory-openssl.html
- http://secunia.com/advisories/30405
- http://secunia.com/advisories/30460
- http://secunia.com/advisories/30825
- http://secunia.com/advisories/30852
- http://secunia.com/advisories/30868
- http://secunia.com/advisories/31228
- http://secunia.com/advisories/31288
- http://security.gentoo.org/glsa/glsa-200806-08.xml
- http://slackware.com/security/viewer.php?l=slackware-security\u0026y=2008\u0026m=slackware-security.562004
- http://sourceforge.net/project/shownotes.php?release_id=615606
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL\u0026id=738400
- http://www.kb.cert.org/vuls/id/520586
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:107
- http://www.openssl.org/news/secadv_20080528.txt
- http://www.securityfocus.com/archive/1/492932/100/0/threaded
- http://www.securityfocus.com/bid/29405
- http://www.securitytracker.com/id?1020122
- http://www.ubuntu.com/usn/usn-620-1
- http://www.vupen.com/english/advisories/2008/1680
- http://www.vupen.com/english/advisories/2008/1937/references
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42667
- https://www.redhat.com/archives/fedora-package-announce/2008-May/msg01029.html