Is CVE-2020-25659 in the CISA KEV catalog?

No. CVE-2020-25659 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-25659?

CVE-2020-25659 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2020-25659?

CVE-2020-25659 has an EPSS score of 2.45% (82th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-25659?

Upgrade python-cryptography on debian 11 to 3.2.1-1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-25659

MEDIUMEPSS 82th pctl

5.9

CVSS v3

NVD

Description

python-cryptography 3.2 is vulnerable to Bleichenbacher timing attacks in the RSA decryption API, via timed processing of valid PKCS#1 v1.5 ciphertext.

CWE-385

How to fix

Remediation Available

python-cryptographyDebian

Fixed in:3.2.1-1CVE-2020-25659

python-cryptographyUbuntu

Fixed in:1.2.3-1ubuntu0.3USN-4613-1

Fixed in:2.1.4-1ubuntu1.4USN-4613-1

Fixed in:2.8-3ubuntu0.1USN-4613-1

python3-cryptographyUbuntu

Fixed in:1.2.3-1ubuntu0.3USN-4613-1

Fixed in:2.1.4-1ubuntu1.4USN-4613-1

Fixed in:2.8-3ubuntu0.1USN-4613-1

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityHigh

Privileges RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityNone

AvailabilityNone

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

Exploit Intelligence

2.45%probability of exploitation in 30 days

82ndpercentile

Elevated risk: more likely to be exploited than 82% of all known CVEs.

References

Patch3

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.