CVE-2012-0884

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 13.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-03-13 · updated 2026-06-16
Weakness: CWE-310

Description

The implementation of Cryptographic Message Syntax (CMS) and PKCS #7 in OpenSSL before 0.9.8u and 1.x before 1.0.0h does not properly restrict certain oracle behavior, which makes it easier for context-dependent attackers to decrypt data via a Million Message Attack (MMA) adaptive chosen ciphertext attack.

Affected products

OpenSSL: through 0.9.8t; 0.9.0b, 0.9.1b, 0.9.1c, 0.9.2b, 0.9.3, 0.9.3a (+59)

References

http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077086.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077221.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-April/077666.html
http://lists.fedoraproject.org/pipermail/package-announce/2012-November/092905.html
http://marc.info/?l=bugtraq&m=133728068926468&w=2
http://marc.info/?l=bugtraq&m=133951357207000&w=2
http://marc.info/?l=bugtraq&m=134039053214295&w=2
http://rhn.redhat.com/errata/RHSA-2012-0426.html
http://rhn.redhat.com/errata/RHSA-2012-0488.html
http://rhn.redhat.com/errata/RHSA-2012-0531.html
http://rhn.redhat.com/errata/RHSA-2012-1306.html
http://rhn.redhat.com/errata/RHSA-2012-1307.html

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