Vulnerability · Published Jan 12, 2021 · Assigned by redhat
CVE-2020-25657
Medium 5.9
In plain English
A medium-severity security flaw in m2crypto. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.8% (higher than 78% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)5.9Medium
Exploit odds (30 days)1.8%top 21.9% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
A flaw was found in all released versions of m2crypto, where they are vulnerable to Bleichenbacher timing attacks in the RSA decryption API via the timed processing of valid PKCS#1 v1.5 Ciphertext. The highest threat from this vulnerability is to confidentiality.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | m2crypto | 0.38.0-4 | DEBIAN-CVE-2020-25657 |
| Debian:13 | m2crypto | 0.38.0-4 | DEBIAN-CVE-2020-25657 |
| Ubuntu:22.04:LTS | m2crypto | no fix listed | UBUNTU-CVE-2020-25657 |
| Ubuntu:24.04:LTS | m2crypto | no fix listed | UBUNTU-CVE-2020-25657 |
| Ubuntu:25.10 | m2crypto | no fix listed | UBUNTU-CVE-2020-25657 |
| Ubuntu:26.04:LTS | m2crypto | no fix listed | UBUNTU-CVE-2020-25657 |
Affected products (as reported)
Weakness: CWE-385
References
- https://bugzilla.redhat.com/show_bug.cgi?id=1889823 x_refsource_MISC