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.
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 ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | openssl | 1.0.0h-1 | — |
| Debian 13 | openssl | 1.0.0h-1 | — |
| Debian 12 | openssl | 1.0.0h-1 | — |
| Debian 6.0 | openssl | 0.9.8o-4squeeze11 | DSA-2454-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 14.04 LTS | openssl098 | 0.9.8o-7ubuntu3.2.14.04.1 | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 6 | openssl +3 | 1.0.0-20.el6_2.3 | RHSA-2012:0426 |
| RHEL 5 | openssl +2 | 0.9.8e-22.el5_8.1 | RHSA-2012:0426 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP1 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 SP1 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4 +1 | 4.8.6-7.1 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
| SLES for SAP 12 | libqt4-devel-doc | 4.8.6-7.3 | SUSE-SU-403 Forbidden-1, SUSE-SU-403 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | openssl-1_1 | 1.1.1l-1.2 | openSUSE-SU-2024:11127-1 |
Advisories 5
- RHSA-2012:0426 Red Hat Security Advisory: openssl security and bug fix update Red Hat Security Advisories (RHSA) · Jun 26, 2026
- DSA-2454-1 openssl - multiple Debian Security (DSA / DLA) · Mar 9, 2026
- SUSE-SU-403 Forbidden-1 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- SUSE-SU-403 Security update for OpenSSL SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:11127-1 libopenssl-1_1-devel-1.1.1l-1.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
References
- FEDORA-2012-4630 vendor-advisory
- RHSA-2012:0531 vendor-advisory
- http://www-01.ibm.com/support/docview.wss?uid=ssg1S1004564
- FEDORA-2012-18035 vendor-advisory
- https://downloads.avaya.com/css/P8/documents/100162507
- RHSA-2012:1308 vendor-advisory
- openSUSE-SU-2012:0547 vendor-advisory
- RHSA-2012:1307 vendor-advisory
- http://www.openssl.org/news/secadv_20120312.txt
- 48916 third-party-advisory
- RHSA-2012:0488 vendor-advisory
- DSA-2454 vendor-advisory
- 48895 third-party-advisory
- 48580 third-party-advisory
- VU#737740 third-party-advisory
- RHSA-2012:1306 vendor-advisory
- FEDORA-2012-4665 vendor-advisory
- HPSBOV02793 vendor-advisory
- 57353 third-party-advisory
- RHSA-2012:0426 vendor-advisory
- HPSBUX02782 vendor-advisory
- SSRT100852 vendor-advisory
- FEDORA-2012-4659 vendor-advisory