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Servers and applications

CVE-2003-0544

OpenSSL 0.9.6 and 0.9.7 does not properly track the number of characters in certain ASN.1 inputs, which allows remote attackers to cause a denial of service (crash) via an SSL client certificate that causes OpenSSL to read past the end of a buffer when the long form is used.

Severity
Medium 5.0
Published
17 Nov 2003
Last changed
16 Jun 2026
Added to UpHeron
21 Oct 2026
Exploit chance
6.9% in the next 30 daysHigher than 94% of CVEs. EPSS by FIRST, 12 Nov 2026
Attack
Over the network · No login needed
Attacker can
Slow it down
CVSS vector
AV:N/AC:L/Au:N/C:N/I:N/A:P
Sources
NVD

Affected software

SoftwareAffected versions
OpenSSLServers and applications · cpe:a:openssl:openssl
  • Version 0.9.6
  • Version 0.9.7

References

  • NVD https://nvd.nist.gov/vuln/detail/CVE-2003-0544
  • CVE.org https://www.cve.org/CVERecord?id=CVE-2003-0544