CVE & CISA-KEV Catalog

CVE-2020-13757

HIGH
7.5
CVSS v3
NVD

Description

Python-RSA before 4.1 ignores leading '\0' bytes during decryption of ciphertext. This could conceivably have a security-relevant impact, e.g., by helping an attacker to infer that an application uses Python-RSA, or if the length of accepted ciphertext affects application behavior (such as by causing excessive memory allocation).

CWE-327

How to fix

Remediation Available
python-rsaDebian
Fixed in:4.7.2-1CVE-2020-13757
Fixed in:4.7.2-1CVE-2020-13757
Fixed in:4.7.2-1CVE-2020-13757
python-rsaUbuntu
Fixed in:3.1.2-1ubuntu0.1+esm1USN-4478-1
Fixed in:3.2.3-1.1ubuntu0.1~esm1USN-4478-2
Fixed in:3.4.2-1ubuntu0.1~esm1USN-4478-2
Fixed in:4.0-3ubuntu0.1~esm1USN-4478-2
python3-rsaUbuntu
Fixed in:3.2.3-1.1ubuntu0.1~esm1USN-4478-2
Fixed in:3.4.2-1ubuntu0.1~esm1USN-4478-2
Fixed in:4.0-3ubuntu0.1~esm1USN-4478-2

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 ComplexityLow
Privileges RequiredNone
User InteractionNone
ScopeUnchanged

Impact

ConfidentialityHigh
IntegrityNone
AvailabilityNone

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

Exploit Intelligence

1.36%probability of exploitation in 30 days
68thpercentile

Moderate risk: more likely to be exploited than 68% of all known CVEs.

References

Exploit1
Third-Party Advisory2
Embed a live status badge for CVE-2020-13757
CVE-2020-13757 severity badge

Markdown

[![CVE-2020-13757](https://tridentstack.com/cve/badge/CVE-2020-13757.svg)](https://tridentstack.com/cve/CVE-2020-13757)

HTML

<a href="https://tridentstack.com/cve/CVE-2020-13757"><img src="https://tridentstack.com/cve/badge/CVE-2020-13757.svg" alt="CVE-2020-13757"></a>

Find and fix vulnerabilities across your fleet

TridentStack Control continuously scans your Windows, macOS, and Linux fleet for known vulnerabilities, prioritizes them by severity and active exploitation, and patches them automatically.

Start free

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.