Vulnerability · Published Aug 8, 2023 · Assigned by mitre
CVE-2023-39976
Critical 9.8
In plain English
A critical-severity security flaw in the libqb package (AlmaLinux). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS NVD)9.8Critical
Exploit odds (30 days)1.2%top 32.1% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
log_blackbox.c in libqb before 2.0.8 allows a buffer overflow via long log messages because the header size is not considered.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:9 | libqb | 2.0.6-4.el9_3 | ALSA-2023:6578 |
| AlmaLinux:9 | libqb-devel | 2.0.6-4.el9_3 | ALSA-2023:6578 |
| Debian:12 | libqb | no fix listed | DEBIAN-CVE-2023-39976 |
| Debian:13 | libqb | 2.0.8-1 | DEBIAN-CVE-2023-39976 |
| Debian:14 | libqb | 2.0.8-1 | DEBIAN-CVE-2023-39976 |
| Ubuntu:22.04:LTS | libqb | 2.0.4-1ubuntu0.2 | USN-6308-1 |
| Ubuntu:22.04:LTS | libqb | 2.0.4-1ubuntu0.2 | UBUNTU-CVE-2023-39976 |