Vulnerability in M2crypto Project
CVE-2020-25657
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.018 (77.7th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 78th percentile — 77.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.017 · newest: 0.018 · change: +0.000
Affected products
- M2crypto Project
- Fedoraproject Fedora — versions 33
- Red Hat Enterprise Linux — versions 6.0, 7.0
- Red Hat Virtualization — versions 4.0
- M2crypto — versions All released versions of m2crypto
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (Third Party Advisory, Issue Tracking)
Frequently asked questions
- What is CVE-2020-25657?
- CVE-2020-25657 is a medium-severity vulnerability in M2crypto Project, classified under CWE-385. CVSS score: 5.9/10. Published 2021-01-12.
- How severe is CVE-2020-25657?
- Medium severity. CVSS v3 base score is 5.9 out of 10.
- Is CVE-2020-25657 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.