Vulnerability · Published Mar 15, 2023 · Assigned by mitre
CVE-2020-27507
Critical 9.8
In plain English
A critical-severity buffer overflow in the kamailio package (Debian). Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.8Critical
Exploit odds (30 days)1.2%top 32.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
The Kamailio SIP before 5.5.0 server mishandles INVITE requests with duplicated fields and overlength tag, leading to a buffer overflow that crashes the server or possibly have unspecified other impact.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | kamailio | 5.4.2-1 | DEBIAN-CVE-2020-27507 |
| Debian:13 | kamailio | 5.4.2-1 | DEBIAN-CVE-2020-27507 |
| Debian:14 | kamailio | 5.4.2-1 | DEBIAN-CVE-2020-27507 |
Affected products (as reported)
Weakness: CWE-120 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H