Double Free in Openssl

CVE-2003-0545

Double free vulnerability in OpenSSL 0.9.7 allows remote attackers to cause a denial of service (crash) and possibly execute arbitrary code via an SSL client certificate with a certain invalid ASN.1 encoding.

Vulnerability class: Double Free

EPSS: 0.854 (99.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

  • Openssl — versions 0.9.6, 0.9.7
  • N/a — versions n/a

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (x_refsource_REDHAT, vendor-advisory, Patch, Broken Link, Vendor Advisory)
  • cve@mitre.org (vdb-entry, Broken Link, x_refsource_VUPEN)
  • cve@mitre.org (x_refsource_CONFIRM, Broken Link)
  • cve@mitre.org (US Government Resource, x_refsource_CERT-VN, Third Party Advisory, third-party-advisory)
  • cve@mitre.org (Patch, x_refsource_MISC, Broken Link, Vendor Advisory)
  • cve@mitre.org (vendor-advisory, Broken Link, x_refsource_DEBIAN)
  • cve@mitre.org (US Government Resource, Third Party Advisory, x_refsource_CERT, third-party-advisory)
  • cve@mitre.org (x_refsource_SECUNIA, Broken Link, Vendor Advisory, third-party-advisory)
  • cve@mitre.org (Broken Link, x_refsource_OVAL, signature, vdb-entry)
  • cve@mitre.org (VDB Entry, Third Party Advisory, vdb-entry, Broken Link, x_refsource_BID)

Frequently asked questions

What is CVE-2003-0545?
CVE-2003-0545 is a critical-severity vulnerability in Openssl, classified under Double Free. CVSS score: 9.8/10. Published 2003-11-17.
How severe is CVE-2003-0545?
Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2003-0545 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.