Resource exhaustion in Opensips
CVE-2023-27596
OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.8 and 3.2.5, OpenSIPS crashes when a malformed SDP body is sent multiple times to an OpenSIPS configuration that makes use of the `stream_process` function. This issue was discovered during coverage guided fuzzing of the function `codec_delete_except_re`. By abusing this vulnerability, an attacker is able to crash the server. It affects configurations containing functions that rely on the affected code, such as the function `codec_delete_except_re`. This issue has been fixed in version 3.1.8 and 3.2.5.
EPSS: 0.007 (50.8th percentile) — read the EPSS interpretation.
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.
Affected products
- Opensips — versions < 3.1.8, >= 3.2.0, < 3.2.5
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Third Party Advisory)
- security-advisories@github.com (Patch, Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2023-27596?
- CVE-2023-27596 is a high-severity vulnerability in Opensips, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2023-03-15.
- How severe is CVE-2023-27596?
- High severity. CVSS v3 base score is 7.5 out of 10.