CVE-2023-50781
M2crypto: bleichenbacher timing attacks in the rsa decryption api - incomplete fix for cve-2020-25657
HIGH 7.5
At a glance
- Source
- NVD
- EPSS
- EPSS 1.12 % · percentile 66 ()
- State
- PUBLISHED
- Published
- Updated
- Assigner
- redhat
- NVD status
- Analyzed
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.
Weaknesses (CWE)
- CWE-203 — Observable Discrepancy
References
Scores
| Version | Score | Vector | Scored by |
|---|---|---|---|
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | redhat |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · secalert@redhat.com (Secondary) |
| CVSS 3.1 | HIGH 7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N | NVD · nvd@nist.gov (Primary) |
Advisories
- GHSA-944j-8ch6-rf6x — m2crypto Bleichenbacher timing attack - incomplete fix for CVE-2020-25657
- PYSEC-2026-1595 — m2crypto Bleichenbacher timing attack - incomplete fix for CVE-2020-25657
European references
- ENISA EUVD · EUVD-2024-0587
- GCVE · GCVE-0-2023-50781
Affected configurations (NVD CPE)
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*cpe:2.3:a:redhat:update_infrastructure:4:*:*:*:*:*:*:*cpe:2.3:a:m2crypto_project:m2crypto:*:*:*:*:*:*:*:*≤ 0.40.1
Affected products
Sources
| Source | Licence |
|---|---|
| CVE List (CVEProject cvelistV5) | CVE Program Terms of Use |
| EPSS (FIRST.org) | FIRST — attribution requested |
| ENISA EUVD | ENISA — reproduction authorised, source acknowledged |
| NVD (NIST) via fkie-cad/nvd-json-data-feeds | Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD |