Description
Lasso all versions prior to 2.7.0 has improper verification of a cryptographic signature.
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 | lasso | 2.6.1-3 | — |
| Debian 13 | lasso | 2.6.1-3 | — |
| Debian 12 | lasso | 2.6.1-3 | — |
| Debian 10 | lasso | 2.6.0-2+deb10u1 | DSA-4926-1 |
| Debian 9 | lasso | 2.5.0-5+deb9u1 | DLA-2684-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | lasso | 2.6.0-7ubuntu1.2 | USN-4974-1 |
| Ubuntu 18.04 LTS | lasso | 2.5.1-0ubuntu1.2 | USN-4974-1 |
| Ubuntu 16.04 LTS | lasso | No fix yet | — |
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 8 | lasso +1 | 2.6.0-12.el8 | RHSA-2021:4325 |
| RHEL 7 | lasso +2 | 2.5.1-8.el7_9 | RHSA-2021:2989 |
AlmaLinux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux 8 | lasso +1 | 2.6.0-12.el8 | ALSA-2021:4325 |
Rocky Linux
Errata ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Rocky Linux 8 | lasso | 2.6.0-12.el8 | RLSA-2021:4325 |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 12 SP5 | lasso | 2.6.1-8.7.2 | SUSE-SU-2021:2589-1 |
Show 1 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 12 SP5 | lasso | 2.6.1-8.7.2 | SUSE-SU-2021:2589-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | lasso | 2.7.0-2.2 | openSUSE-SU-2024:10909-1 |
| openSUSE Leap 15.2 | lasso | 2.6.1-lp152.2.3.1 | openSUSE-SU-2021:1057-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2 | lasso +2 | 2.5.1-5.amzn2.0.1 | ALAS2-2021-1660 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 2 (CBL-Mariner) | lasso | 2.8.0-1 | — |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 8 | lasso +1 | 2.6.0-12.el8 | ELSA-2021-4325 |
| Oracle Linux 7 | lasso +2 | 2.5.1-8.el7_9 | ELSA-2021-2989 |
Advisories 13
- ALSA-2021:4325 Moderate: lasso security and enhancement update AlmaLinux Security Advisories · Oct 29, 2026
- RHSA-2021:4325 Red Hat Security Advisory: lasso security and enhancement update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- RHSA-2021:2989 Red Hat Security Advisory: lasso security update Red Hat Security Advisories (RHSA) · Jun 27, 2026
- USN-4974-1 lasso vulnerability Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-4926-1 lasso - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DLA-2684-1 lasso - security update Debian Security (DSA / DLA) · Mar 9, 2026
- RLSA-2021:4325 Moderate: lasso security and enhancement update Rocky Linux Security Advisories · Feb 5, 2026
- SUSE-SU-2021:2589-1 Security update for lasso SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2021:1057-1 Security update for lasso SUSE / openSUSE Security Updates · Feb 4, 2026
- openSUSE-SU-2024:10909-1 liblasso-devel-2.7.0-2.2 on GA media SUSE / openSUSE Security Updates · May 7, 2025
- ELSA-2021-4325 Moderate: lasso security and enhancement update (Oracle Linux 8) Oracle Linux Security Advisories (ELSA) · Nov 16, 2021
- ELSA-2021-2989 Important: lasso security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Aug 2, 2021
- ALAS2-2021-1660 Important: lasso security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Jun 22, 2021
References
- http://listes.entrouvert.com/arc/lasso/
- https://git.entrouvert.org/lasso.git/commit/?id=076a37d7f0eb74001127481da2d355683693cde9
- https://git.entrouvert.org/lasso.git/tree/NEWS?id=v2.7.0
- DSA-4926 vendor-advisory
- [debian-lts-announce] 20210610 [SECURITY] [DLA 2684-1] lasso security update mailing-list
- FEDORA-2021-bb3ea1e191 vendor-advisory
- FEDORA-2021-508acb1153 vendor-advisory