Vulnerability in Sybren A. Stüvel Python-rsa
CVE-2020-25658
It was found that python-rsa is vulnerable to Bleichenbacher timing attacks. An attacker can use this flaw via the RSA decryption API to decrypt parts of the cipher text encrypted with RSA.
EPSS: 0.001 (34.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.
Affected products
- Sybren A. Stüvel Python-rsa — versions after 3.0 (inclusive)
Weakness classification (CWE)
Public proof-of-concept exploits
References
- bugzilla.redhat.com/show_bug.cgi (x_refsource_CONFIRM)
- github.com/sybrenstuvel/python-rsa/issues/165 (x_refsource_MISC)
- FEDORA-2021-783a157adc (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-c1fef03e71 (vendor-advisory, x_refsource_FEDORA)
- FEDORA-2021-15e50503d6 (vendor-advisory, x_refsource_FEDORA)
Frequently asked questions
- What is CVE-2020-25658?
- CVE-2020-25658 is a high-severity vulnerability in Sybren A. Stüvel Python-rsa, classified under CWE-385. CVSS score: 7.5/10. Published 2020-11-12.
- How severe is CVE-2020-25658?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2020-25658 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.