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CVE-2008-0891

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.

Severity
Medium 4.3
Published
29 May 2008
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
4.4% in the next 30 daysHigher than 91% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
CWE-189
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:M/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 0.9.8f
  • Version 0.9.8g

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2008-0891
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2008-0891