CVE-2009-0590

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 6.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2009-03-27 · updated 2026-06-16
Weakness: CWE-119

Description

The ASN1_STRING_print_ex function in OpenSSL before 0.9.8k allows remote attackers to cause a denial of service (invalid memory access and application crash) via vectors that trigger printing of a (1) BMPString or (2) UniversalString with an invalid encoded length.

Affected products

Debian Linux: 4.0, 5.0
OpenSSL: before 0.9.8k — fixed in 0.9.8k

How to fix

Upgrade to a fixed version: OpenSSL 0.9.8k. Check the vendor advisory for mitigations.

References

http://lists.apple.com/archives/security-announce/2009/Sep/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2009-05/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00013.html
http://lists.opensuse.org/opensuse-security-announce/2011-07/msg00014.html
http://lists.vmware.com/pipermail/security-announce/2010/000082.html
http://marc.info/?l=bugtraq&m=124464882609472&w=2
http://marc.info/?l=bugtraq&m=125017764422557&w=2
http://marc.info/?l=bugtraq&m=127678688104458&w=2
http://secunia.com/advisories/34411
http://secunia.com/advisories/34460
http://secunia.com/advisories/34509

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