Is CVE-2023-2603 in the CISA KEV catalog?

No. CVE-2023-2603 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2023-2603?

CVE-2023-2603 has a CVSS v3 base score of 7.8 (HIGH).

What is the EPSS score for CVE-2023-2603?

CVE-2023-2603 has an EPSS score of 0.57% (43th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-2603?

Upgrade libcap2 on debian 11 to 1:2.44-1+deb11u1 or later. Fixes are available for 11 affected products.

CVE & CISA-KEV Catalog

CVE-2023-2603

HIGH

7.8

CVSS v3

NVD

Description

A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an integer overflow if the input string is close to 4GiB.

CWE-190Integer Overflow

How to fix

Remediation Available

libcap2Debian

Fixed in:1:2.44-1+deb11u1CVE-2023-2603

Fixed in:1:2.66-4CVE-2023-2603

libcapRocky

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

libcapRed Hat / RHEL

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

libcap-debuginfoRed Hat / RHEL

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

libcap-debuginfoRocky

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

libcap-debugsourceRed Hat / RHEL

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

libcap-debugsourceRocky

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

libcap-develRed Hat / RHEL

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

libcap-develRocky

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-4.el8_6RHSA-2023:7400

Fixed in:0:2.48-5.el8_8RHSA-2023:4524

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

Fixed in:0:2.48-9.el9_2RHSA-2023:5071

Fixed in:0:2.48-8.el9_0.1RHSA-2024:0436

libcap2Ubuntu

Fixed in:1:2.24-0ubuntu2+esm1USN-6166-2

Fixed in:1:2.24-12ubuntu0.1~esm1USN-6166-2

Fixed in:1:2.25-1.2ubuntu0.1~esm1USN-6166-2

Fixed in:1:2.32-1ubuntu0.1USN-6166-1

Fixed in:1:2.44-1ubuntu0.22.04.1USN-6166-1

Fixed in:1:2.44-1ubuntu0.22.10.1USN-6166-1

Fixed in:1:2.66-3ubuntu2.1USN-6166-1

libcap2-binUbuntu

Fixed in:1:2.24-0ubuntu2+esm1USN-6166-2

Fixed in:1:2.24-12ubuntu0.1~esm1USN-6166-2

Fixed in:1:2.25-1.2ubuntu0.1~esm1USN-6166-2

Fixed in:1:2.32-1ubuntu0.1USN-6166-1

Fixed in:1:2.44-1ubuntu0.22.04.1USN-6166-1

Fixed in:1:2.44-1ubuntu0.22.10.1USN-6166-1

Fixed in:1:2.66-3ubuntu2.1USN-6166-1

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 VectorLocal

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.57%probability of exploitation in 30 days

43rdpercentile

Moderate risk: more likely to be exploited than 43% of all known CVEs.

References

Exploit1

x41-dsec.de

Third-Party Advisory3

Related Vulnerabilities

Other CWE-190 (Integer Overflow) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-16040	Medium	6.5	100%	-	Fix
CVE-2019-11477	High	7.5	99%	-	Fix
CVE-2023-44443	High	7.8	94%	-	Fix
CVE-2014-0569	High	9.3	90%	-	-
CVE-2017-3599	High	7.5	90%	-	Fix
CVE-2023-21716	Critical	9.8	82%	-	Fix

Embed a live status badge for CVE-2023-2603

Markdown

[![CVE-2023-2603](https://tridentstack.com/cve/badge/CVE-2023-2603.svg)](https://tridentstack.com/cve/CVE-2023-2603)

HTML

<a href="https://tridentstack.com/cve/CVE-2023-2603"><img src="https://tridentstack.com/cve/badge/CVE-2023-2603.svg" alt="CVE-2023-2603"></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 2025-12-02.