Is CVE-2023-40359 in the CISA KEV catalog?

No. CVE-2023-40359 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-40359?

CVE-2023-40359 has a CVSS v3 base score of 9.8 (CRITICAL).

What is the EPSS score for CVE-2023-40359?

CVE-2023-40359 has an EPSS score of 0.73% (50th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-40359?

Upgrade xterm on debian 13 to 382-2 or later.

CVE & CISA-KEV Catalog

CVE-2023-40359

CRITICAL

9.8

CVSS v3

NVD

Description

xterm before 380 supports ReGIS reporting for character-set names even if they have unexpected characters (i.e., neither alphanumeric nor underscore), aka a pointer/overflow issue. This can only occur for xterm installations that are configured at compile time to use a certain experimental feature.

How to fix

Remediation Available

xtermDebian

Fixed in:382-2CVE-2023-40359

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

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.73%probability of exploitation in 30 days

50thpercentile

Moderate risk: more likely to be exploited than 50% of all known CVEs.

References

Release Notes1

invisible-island.net

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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.