CVE-2023-2603 Integer overflow in libcap
An integer overflow in libcap's string duplication function can cause a denial of service when processing large inputs.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2023-2603?
CVE-2023-2603 is a high-severity vulnerability in Debian Debian Linux, published on 6 Jun 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Official 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.
Weakness: CWE-190
Which versions are affected by CVE-2023-2603?
It affects 4 products.
Linux distribution packages (15)
libcap-debuginfo Red Hat:rhel_eus:9.0::appstream | All versions | 0:2.48-8.el9_0.1 |
libcap-debugsource Red Hat:rhel_eus:9.0::appstream | All versions | 0:2.48-8.el9_0.1 |
libcap-devel Red Hat:rhel_eus:9.0::appstream | All versions | 0:2.48-8.el9_0.1 |
libcap Red Hat:rhel_eus:9.0::baseos | All versions | 0:2.48-8.el9_0.1 |
libcap-debuginfo Red Hat:rhel_eus:9.0::baseos | All versions | 0:2.48-8.el9_0.1 |
libcap-debugsource Red Hat:rhel_eus:9.0::baseos | All versions | 0:2.48-8.el9_0.1 |
libcap SUSE:Linux Enterprise Micro 5.1 | All versions | 2.26-150000.4.9.1 |
libcap SUSE:Linux Enterprise Micro 5.2 | All versions | 2.26-150000.4.9.1 |
libcap SUSE:Linux Enterprise Real Time 15 SP3 | All versions | 2.26-150000.4.9.1 |
libcap SUSE:Linux Enterprise Server 12 SP5 | All versions | 2.26-14.9.1 |
libcap SUSE:Linux Enterprise Server for SAP Applications 12 SP5 | All versions | 2.26-14.9.1 |
libcap SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 2.26-14.9.1 |
libcap SUSE:Manager Proxy 4.2 | All versions | 2.26-150000.4.9.1 |
libcap SUSE:Manager Server 4.2 | All versions | 2.26-150000.4.9.1 |
libcap openSUSE:Leap 15.4 | All versions | 2.26-150000.4.9.1 |
Products include Debian Debian Linux, Fedoraproject Fedora, Libcap Project Libcap, Redhat Enterprise Linux.
How do I fix CVE-2023-2603?
Apply the vendor's patch.
Is CVE-2023-2603 being exploited?
There is no known exploitation of CVE-2023-2603 in the wild and no public exploit code.
Public exploit code: 1 proofs of concept on GitHub.
Other vulnerabilities in Debian Debian Linux
Sources
Also known as ALPINE-CVE-2023-2603, AZL-27065, CLSA-2023-1688677606, CLSA-2023-1688678245, CLSA-2023-1699379448, DEBIAN-CVE-2023-2603 and 8 more.