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CVE-2020-25657

MEDIUMCVSS 5.9/10EPSS 1.73%

Last modified

CVE-2020-25657 is a medium-severity vulnerability rated 5.9/10 on the CVSS scale. 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.. EPSS estimates a 1.73% chance of exploitation in the next 30 days.

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.

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
1.73%

74.7th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
M2crypto ProjectM2cryptoAll versions
RedhatVirtualization4.0
RedhatEnterprise Linux6.0
RedhatEnterprise Linux7.0
FedoraprojectFedora33

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2020-25657?
CVE-2020-25657 has a CVSS score of 5.9/10 (MEDIUM severity). The EPSS model estimates a 1.73% probability of exploitation in the next 30 days.
How do I fix CVE-2020-25657?
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-2020-25657?

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

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Source: NVD / NIST