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Servers and applications

CVE-2006-4343

The get_server_hello function in the SSLv2 client code in OpenSSL 0.9.7 before 0.9.7l, 0.9.8 before 0.9.8d, and earlier versions allows remote servers to cause a denial of service (client crash) via unknown vectors that trigger a null pointer dereference.

Severity
Medium 4.3
Published
28 Sept 2006
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
19% in the next 30 daysHigher than 97% of CVEs. EPSS by FIRST, 12 Nov 2026
Weakness
Null pointer dereference (CWE-476)
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 0.9.8c
  • Version 0.9.8b
  • Version 0.9.8a
  • Version 0.9.8
All 16 release lines
  • Version 0.9.7
  • Version 0.9.7a
  • Version 0.9.7b
  • Version 0.9.7c
  • Version 0.9.7d
  • Version 0.9.7e
  • Version 0.9.7f
  • Version 0.9.7g
  • Version 0.9.7h
  • Version 0.9.7i
  • Version 0.9.7j
  • Version 0.9.7k
  • Version 0.9.8
  • Version 0.9.8a
  • Version 0.9.8b
  • Version 0.9.8c

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2006-4343
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2006-4343