Description
The Montgomery ladder implementation in OpenSSL through 1.0.0l does not ensure that certain swap operations have a constant-time behavior, which makes it easier for local users to obtain ECDSA nonces via a FLUSH+RELOAD cache side-channel 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 | 1.0.1g-1 | — |
| Debian 13 | openssl | 1.0.1g-1 | — |
| Debian 12 | openssl | 1.0.1g-1 | — |
| Debian 7 | openssl | 1.0.1e-2+deb7u7 | DSA-2908-1 |
| Debian 6.0 | openssl | 0.9.8o-4squeeze15 | DLA-0003-1 |
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 6
- DSA-2908-1 openssl - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-0003-1 openssl - security update 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
- WID-SEC-2026-0180 Dell Data Protection Advisor: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jan 20, 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
- http://www.novell.com/support/kb/doc.php?id=7015300
- 59264 third-party-advisory
- 59454 third-party-advisory
- 66363 vdb-entry
- 58492 third-party-advisory
- http://www.novell.com/support/kb/doc.php?id=7015264
- https://bugs.gentoo.org/show_bug.cgi?id=505278
- 59445 third-party-advisory
- HPSBUX03046 vendor-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21676655
- http://www-01.ibm.com/support/docview.wss?uid=swg21676092
- http://git.openssl.org/gitweb/?p=openssl.git%3Ba=commit%3Bh=2198be3483259de374f91e57d247d0fc667aef29
- http://www-01.ibm.com/support/docview.wss?uid=isg400001843
- https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05301946
- HPSBOV03047 vendor-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21677828
- HPSBMU03074 vendor-advisory
- 59300 third-party-advisory
- http://advisories.mageia.org/MGASA-2014-0165.html
- http://www-01.ibm.com/support/docview.wss?uid=swg21677695
- openSUSE-SU-2014:0480 vendor-advisory
- 59495 third-party-advisory
- http://www-01.ibm.com/support/docview.wss?uid=isg400001841
- openSUSE-SU-2016:0640 vendor-advisory
- http://www.oracle.com/technetwork/topics/security/cpujan2015-1972971.html
- 59655 third-party-advisory
- 59374 third-party-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21676501
- http://www.oracle.com/technetwork/security-advisory/cpuoct2017-3236626.html
- HPSBMU03057 vendor-advisory
- 58939 third-party-advisory
- 59514 third-party-advisory
- 20140605 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products vendor-advisory
- https://kc.mcafee.com/corporate/index?page=content&id=SB10075
- http://www-01.ibm.com/support/docview.wss?uid=swg21676419
- 59438 third-party-advisory
- HPSBGN03050 vendor-advisory
- 58727 third-party-advisory
- http://www.openssl.org/news/secadv_20140605.txt
- http://support.apple.com/kb/HT6443
- USN-2165-1 vendor-advisory
- HPSBMU03076 vendor-advisory
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10629
- MDVSA-2014:067 vendor-advisory
- HPSBMU03062 vendor-advisory
- https://bugzilla.novell.com/show_bug.cgi?id=869945
- 59040 third-party-advisory
- HPSBMU03056 vendor-advisory
- 59175 third-party-advisory
- HPSBMU03051 vendor-advisory
- 59413 third-party-advisory
- 59721 third-party-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21676062
- http://www-01.ibm.com/support/docview.wss?uid=swg21673137
- MDVSA-2015:062 vendor-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21676035
- 59450 third-party-advisory
- 59364 third-party-advisory
- http://www-01.ibm.com/support/docview.wss?uid=swg21676424
- 60571 third-party-advisory