Vulnerability · Published Jan 2, 2024 · Assigned by mitre
CVE-2023-49556
Medium 5.5
In plain English
A medium-severity buffer overflow in the yasm package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 36% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 63.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
Buffer Overflow vulnerability in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expr_delete_term function in the libyasm/expr.c component.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | yasm | no fix listed | DEBIAN-CVE-2023-49556 |
| Debian:13 | yasm | no fix listed | DEBIAN-CVE-2023-49556 |
| Debian:14 | yasm | no fix listed | DEBIAN-CVE-2023-49556 |
| Ubuntu:22.04:LTS | yasm | no fix listed | UBUNTU-CVE-2023-49556 |
| Ubuntu:24.04:LTS | yasm | no fix listed | UBUNTU-CVE-2023-49556 |
| Ubuntu:25.10 | yasm | no fix listed | UBUNTU-CVE-2023-49556 |
| Ubuntu:26.04:LTS | yasm | no fix listed | UBUNTU-CVE-2023-49556 |
| Ubuntu:26.10 | yasm | no fix listed | UBUNTU-CVE-2023-49556 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H