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CVE-2012-0884

Published: 12 March 2012

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.

Notes

AuthorNote
sbeattie
only affects CMS, PKCS #7, or S/MIME decryption, not SSL/TLS
transactions
mdeslaur
from oss-security: "If a Linux distribution picks up the fix for
CVE-2012-0884 then they will want to pick up change 22161 at the
same time since the fix for the security vulnerability will
generally cause symmetric decryption errors when it kicks in and
things get very confusing for the end user without change 22161"
A second issue was fixed too, see:
http://www.openwall.com/lists/oss-security/2012/05/11/5

Priority

Low

Status

Package Release Status
openssl
Launchpad, Ubuntu, Debian
hardy
Released (0.9.8g-4ubuntu3.19)
lucid
Released (0.9.8k-7ubuntu8.13)
maverick Ignored
(end of life)
natty
Released (0.9.8o-5ubuntu1.7)
oneiric
Released (1.0.0e-2ubuntu4.6)
precise Not vulnerable
(1.0.1-4ubuntu1)
quantal Not vulnerable
(1.0.1-4ubuntu1)
raring Not vulnerable
(1.0.1-4ubuntu1)
saucy Not vulnerable
(1.0.1-4ubuntu1)
trusty Not vulnerable
(1.0.1-4ubuntu1)
upstream
Released (1.0.1)
Patches:
upstream: http://cvs.openssl.org/chngview?cn=22238
upstream: http://cvs.openssl.org/chngview?cn=22161 (related)
upstream: http://cvs.openssl.org/chngview?cn=22537
vendor: http://www.debian.org/security/2012/dsa-2454
openssl098
Launchpad, Ubuntu, Debian
hardy Does not exist

lucid Does not exist

maverick Does not exist

natty Does not exist

oneiric Ignored
(end of life)
precise
Released (0.9.8o-7ubuntu3.2)
quantal Ignored
(end of life)
raring Ignored
(end of life)
saucy
Released (0.9.8o-7ubuntu3.2.13.10.1)
trusty
Released (0.9.8o-7ubuntu3.2.14.04.1)
upstream Needs triage