Vulnerability · Published Apr 11, 2023 · Assigned by mitre
CVE-2023-26917
High 7.5
In plain English
A high-severity null pointer dereference in the libyang package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 60% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)7.5High
Exploit odds (30 days)0.9%top 40.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
libyang from v2.0.164 to v2.1.30 was discovered to contain a NULL pointer dereference via the function lysp_stmt_validate_value at lys_parse_mem.c.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:13 | libyang | 3.4.2+dfsg-2 | DEBIAN-CVE-2023-26917 |
| Debian:14 | libyang | 3.4.2+dfsg-2 | DEBIAN-CVE-2023-26917 |
| Debian:12 | libyang2 | no fix listed | DEBIAN-CVE-2023-26917 |
| Ubuntu:24.04:LTS | libyang2 | 2.1.30-2.1ubuntu0.1 | USN-7752-1 |
| Ubuntu:24.04:LTS | libyang2 | 2.1.30-2.1ubuntu0.1 | UBUNTU-CVE-2023-26917 |
Affected products (as reported)
Weakness: CWE-476 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H