Description
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.
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗Advisories 2
- DSA-393 openssl - denial of service Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-394 openssl095 - ASN.1 parsing vulnerability Debian Security (DSA / DLA) · Mar 9, 2026
References
- RHSA-2003:292 vendor-advisory
- ADV-2006-3900 vdb-entry
- http://www-1.ibm.com/support/docview.wss?uid=swg21247112
- VU#935264 third-party-advisory
- http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm
- DSA-394 vendor-advisory
- CA-2003-26 third-party-advisory
- 22249 third-party-advisory
- oval:org.mitre.oval:def:2590 vdb-entry signature
- 8732 vdb-entry