Improper input validation in Opensips
CVE-2023-27599
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.010 (60.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000
Affected products
- Opensips — versions < 3.1.7, >= 3.2.0, < 3.2.4
Weakness classification (CWE)
References
- github.com/OpenSIPS/opensips/security/advisories/GHSA-qvj2-vqrg-f5jx (Third Party Advisory)
- github.com/OpenSIPS/opensips/commit/cb56694d290530ac308f44b453c18120b1c1109d (Patch, Third Party Advisory)
- opensips.org/pub/audit-2022/opensips-audit-technical-report-full.pdf (Third Party Advisory)
Frequently asked questions
- What is CVE-2023-27599?
- CVE-2023-27599 is a high-severity vulnerability in Opensips, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2023-03-15.
- How severe is CVE-2023-27599?
- High severity. CVSS v3 base score is 7.5 out of 10.