CVE-2008-0891: Double Free
First published: Thu May 29 2008(Updated: )
Double free vulnerability in OpenSSL 0.9.8f and 0.9.8g, when the TLS server name extensions are enabled, allows remote attackers to cause a denial of service (crash) via a malformed Client Hello packet. NOTE: some of these details are obtained from third party information.
Credit: secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| OpenSSL libcrypto | =0.9.8g | |
| OpenSSL libcrypto | =0.9.8f |
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Reference Links
- http://www.openssl.org/news/secadv_20080528.txt
- http://www.securityfocus.com/bid/29405
- http://secunia.com/advisories/30405
- http://www.kb.cert.org/vuls/id/661475
- http://slackware.com/security/viewer.php?l=slackware-security&y=2008&m=slackware-security.562004
- http://secunia.com/advisories/30825
- http://secunia.com/advisories/31288
- http://secunia.com/advisories/31228
- http://sourceforge.net/project/shownotes.php?release_id=615606
- http://security.gentoo.org/glsa/glsa-200806-08.xml
- http://www.ubuntu.com/usn/usn-620-1
- http://secunia.com/advisories/30868
- https://www.redhat.com/archives/fedora-package-announce/2008-May/msg01029.html
- http://secunia.com/advisories/30460
- http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=738400
- http://secunia.com/advisories/30852
- http://www.vupen.com/english/advisories/2008/1937/references
- http://www.securitytracker.com/id?1020121
- http://www.mandriva.com/security/advisories?name=MDVSA-2008:107
- http://cert.fi/haavoittuvuudet/2008/advisory-openssl.html
- http://www.vupen.com/english/advisories/2008/1680
- https://exchange.xforce.ibmcloud.com/vulnerabilities/42666
Frequently Asked Questions
What is the severity of CVE-2008-0891?
CVE-2008-0891 is rated as a high severity vulnerability due to its potential to cause a denial of service.
How do I fix CVE-2008-0891?
To fix CVE-2008-0891, upgrade OpenSSL to version 0.9.8h or later where the vulnerability is patched.
Which versions of OpenSSL are affected by CVE-2008-0891?
CVE-2008-0891 affects OpenSSL versions 0.9.8f and 0.9.8g when TLS server name extensions are enabled.
What type of attack does CVE-2008-0891 enable?
CVE-2008-0891 enables remote attackers to crash the server by sending a malformed Client Hello packet.
Is CVE-2008-0891 a known vulnerability?
Yes, CVE-2008-0891 is a known vulnerability that has been documented and reported by several security advisories.
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- version/openssl libcrypto/0.9.8g
- version/openssl libcrypto/0.9.8f