Is CVE-2021-3731 in the CISA KEV catalog?

No. CVE-2021-3731 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-3731?

CVE-2021-3731 has a CVSS v3 base score of 5.9 (MEDIUM).

What is the EPSS score for CVE-2021-3731?

CVE-2021-3731 has an EPSS score of 1.11% (62th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-3731?

Upgrade ledgersmb on debian 11 to 1.6.9+ds-2+deb11u2 or later. Fixes are available for 2 affected products.

CVE & CISA-KEV Catalog

CVE-2021-3731

MEDIUM

5.9

CVSS v3

NVD

Description

LedgerSMB does not sufficiently guard against being wrapped by other sites, making it vulnerable to 'clickjacking'. This allows an attacker to trick a targetted user to execute unintended actions.

CWE-1021

How to fix

Remediation Available

ledgersmbDebian

Fixed in:1.6.9+ds-2+deb11u2CVE-2021-3731

Fixed in:1.6.9+ds-2.1CVE-2021-3731

ledgersmbUbuntu

Fixed in:1.3.46-1ubuntu0.1~esm1USN-7647-1

Fixed in:1.4.42+ds-1ubuntu0.1~esm1USN-7647-1

Fixed in:1.6.9+ds-1ubuntu0.1+esm1USN-7647-1

Fixed in:1.6.9+ds-1ubuntu0.1USN-5097-1

Fixed in:1.6.33+ds-1ubuntu0.1USN-7647-1

Fixed in:1.6.33+ds-2.1ubuntu0.1USN-7647-1

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 InteractionRequired

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

1.11%probability of exploitation in 30 days

62ndpercentile

Moderate risk: more likely to be exploited than 62% of all known CVEs.

References

Vendor Advisory1

ledgersmb.org

Third-Party Advisory2

Embed a live status badge for CVE-2021-3731

Markdown

[![CVE-2021-3731](https://tridentstack.com/cve/badge/CVE-2021-3731.svg)](https://tridentstack.com/cve/CVE-2021-3731)

HTML

<a href="https://tridentstack.com/cve/CVE-2021-3731"><img src="https://tridentstack.com/cve/badge/CVE-2021-3731.svg" alt="CVE-2021-3731"></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.