Distribution advisory
This page covers CVE-2023-4813 as tracked by Ubuntu, for the package eglibc. The fix is available in version 2.35-0ubuntu3.5; earlier versions remain affected.
How this vulnerability can be exploited
This issue can be reached over the network, attack complexity is high, an attacker needs no privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality none, integrity none, availability high.
CVSS metrics in full
The score comes from this vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- Attack vector: Network — reachable from anywhere that can route to the service.
- Attack complexity: High — the attacker first has to win a race, learn a secret or otherwise prepare the target.
- Privileges required: None — an unauthenticated stranger can try it.
- User interaction: None — nobody has to be tricked into anything.
- Scope: Unchanged — the damage stays inside the vulnerable component.
- Confidentiality impact: None.
- Integrity impact: None.
- Availability impact: High — total loss, or loss the attacker controls.
Weakness class
UBUNTU-CVE-2023-4813 is classified as CWE-416: Use After Free. Memory is used after being released, so its contents may already belong to something else.
Affected software
UBUNTU-CVE-2023-4813 is recorded against 2 packages.
- eglibc
- glibc (fixed in 2.35-0ubuntu3.5)
Timeline and source
Published on 12 September 2023 and last revised on 22 April 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.
References
ubuntu.com (Report)
access.redhat.com (Report)
ubuntu.com (Advisory)
ubuntu.com (Advisory)
www.cve.org (Report)
Other advisories for this package
eglibc has other advisories on record. If you are patching this one, these are worth checking on the same host:
Same weakness in other software
These advisories are the same class of weakness (CWE-416: Use After Free) in other software:
