CVSS 3.1
7.5 highCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:HCVE-2023-27599
High (7.5) in opensips opensips. EPSS 1.0% chance of exploitation in the next 30 days.
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, when the function `append_hf` handles a SIP message with a malformed To header, a call to the function `abort()` is performed, resulting in a crash. This is due to the following check in `data_lump.c:399` in the function `anchor_lump`. An attacker abusing this vulnerability will crash OpenSIPS leading to Denial of Service. It affects configurations containing functions that make use of the affected code, such as the function `append_hf`. This issue has been fixed in versions 3.1.7 and 3.2.4.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
- CWE
- CWE-20
- Published
- Modified
- Record from
- the NVD, synced
Affected
- opensips:opensips
References
- https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109d
- https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jx
- https://opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf
- https://github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109d
- https://github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jx