Log in Start free

Vulnerability · Published Nov 18, 2020 · Assigned by mitre

CVE-2020-28361

Medium 5.4

In plain English

A medium-severity security flaw in the kamailio package (Debian). There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.1% (higher than 66% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.4Medium
Exploit odds (30 days)1.1%top 34.0% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known

Official description

Kamailio before 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 through 5.2 and other products, allows a bypass of a header-removal protection mechanism via whitespace characters. This occurs in the remove_hf function in the Kamailio textops module. Particular use of remove_hf in Sippy Softswitch may allow skilled attacker having a valid credential in the system to disrupt internal call start/duration accounting mechanisms leading potentially to a loss of revenue.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Debian:12kamailio5.4.0-1DEBIAN-CVE-2020-28361
Debian:13kamailio5.4.0-1DEBIAN-CVE-2020-28361
Debian:14kamailio5.4.0-1DEBIAN-CVE-2020-28361

Affected products (as reported)

VendorProductVersions
n/a n/a n/a

References