Vulnerability · Published Jan 2, 2024 · Assigned by mitre
CVE-2023-49558
Medium 5.5
In plain English
A medium-severity security flaw 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 32% of all known vulnerabilities).
Severity (CVSS 3.1)5.5Medium
Exploit odds (30 days)0.4%top 67.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
An issue in YASM 1.3.0.86.g9def allows a remote attacker to cause a denial of service via the expand_mmac_params function in the modules/preprocs/nasm/nasm-pp.c component.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | yasm | no fix listed | DEBIAN-CVE-2023-49558 |
| Debian:13 | yasm | no fix listed | DEBIAN-CVE-2023-49558 |
| Debian:14 | yasm | no fix listed | DEBIAN-CVE-2023-49558 |
| Ubuntu:22.04:LTS | yasm | no fix listed | UBUNTU-CVE-2023-49558 |
| Ubuntu:24.04:LTS | yasm | no fix listed | UBUNTU-CVE-2023-49558 |
| Ubuntu:25.10 | yasm | no fix listed | UBUNTU-CVE-2023-49558 |
| Ubuntu:26.04:LTS | yasm | no fix listed | UBUNTU-CVE-2023-49558 |
| Ubuntu:26.10 | yasm | no fix listed | UBUNTU-CVE-2023-49558 |