Description
A flaw was found in m2crypto. This issue may allow a remote attacker to decrypt captured messages in TLS servers that use RSA key exchanges, which may lead to exposure of confidential or sensitive data.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | m2crypto | — | — |
| Red Hat | Red Hat Enterprise Linux 6 | — | — |
| Red Hat | Red Hat Enterprise Linux 7 | — | — |
| Red Hat | Red Hat Enterprise Linux 8 | — | — |
| Red Hat | Red Hat Enterprise Linux 9 | — | — |
| Red Hat | Red Hat Update Infrastructure 4 for Cloud Providers | — | — |
| Red Hat | Red Hat Virtualization 4 | — | — |
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 13 | m2crypto | 0.40.1-3 | — |
| Debian 12 | m2crypto | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.04 LTS | m2crypto | No fix yet | — |
| Ubuntu 25.10 | m2crypto | No fix yet | — |
| Ubuntu 24.04 LTS | m2crypto | No fix yet | — |
| Ubuntu 22.04 LTS | m2crypto | No fix yet | — |
| Ubuntu 20.04 LTS | m2crypto | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 18.04 LTS | m2crypto | No fix yet | — |
| Ubuntu 16.04 LTS | m2crypto | No fix yet | — |
| Ubuntu 14.04 LTS | m2crypto | No fix yet | — |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | m2crypto | No fix yet | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | m2crypto | <= 0.40.1 | — | GHSA-944j-8ch6-rf6x |
Advisories 2
- SSA-265688 SSA-265688: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP V1.1 Siemens ProductCERT · Oct 13, 2026
- ICSA-24-102-01 Siemens SIMATIC S7-1500 TM MFP CISA ICS & IT advisories · May 14, 2026
References
- https://access.redhat.com/security/cve/CVE-2023-50781 vdb-entry
- RHBZ#2254426 issue-tracking