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CVE-2020-25658

MEDIUMCVSS 5.9/10EPSS 1.63%

Last modified

CVE-2020-25658 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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 estimates a 1.63% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1
5.9/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Probability
1.63%

73.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Python-Rsa ProjectPython-Rsa>= 2.1, < 4.7
RedhatOpenstack Platform13.0
RedhatOpenstack Platform16.0
FedoraprojectFedora33
FedoraprojectFedora34
FedoraprojectFedora35

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2020-25658?
CVE-2020-25658 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.63% probability of exploitation in the next 30 days.
How do I fix CVE-2020-25658?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-25658?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST