CVE-2023-27598
Published Mar 15, 2023
Last updated 2 years ago
Overview
- Description
- OpenSIPS is a Session Initiation Protocol (SIP) server implementation. Prior to versions 3.1.7 and 3.2.4, sending a malformed `Via` header to OpenSIPS triggers a segmentation fault when the function `calc_tag_suffix` is called. A specially crafted `Via` header, which is deemed correct by the parser, will pass uninitialized strings to the function `MD5StringArray` which leads to the crash. Abuse of this vulnerability leads to Denial of Service due to a crash. Since the uninitialized string points to memory location `0x0`, no further exploitation appears to be possible. No special network privileges are required to perform this attack, as long as the OpenSIPS configuration makes use of functions such as `sl_send_reply` or `sl_gen_totag` that trigger the vulnerable code. This issue has been fixed in versions 3.1.7 and 3.2.4.
- Source
- security-advisories@github.com
- NVD status
- Analyzed
Social media
- Hype score
- Not currently trending
Risk scores
CVSS 3.1
- Type
- Primary
- Base score
- 7.5
- Impact score
- 3.6
- Exploitability score
- 3.9
- Vector string
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- Severity
- HIGH
Configurations
[
{
"nodes": [
{
"negate": false,
"cpeMatch": [
{
"criteria": "cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "8EF642AA-D786-40DF-801D-515888AF89BE",
"versionEndExcluding": "3.1.7"
},
{
"criteria": "cpe:2.3:a:opensips:opensips:*:*:*:*:*:*:*:*",
"vulnerable": true,
"matchCriteriaId": "34713A76-CAED-43CF-A77C-73F1C36208AA",
"versionEndExcluding": "3.2.4",
"versionStartIncluding": "3.2.0"
}
],
"operator": "OR"
}
]
}
]