HTTP Request Smuggling Affecting kamailio package, versions *


Severity

Recommended
0.0
medium
0
10

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.17% (40th percentile)

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  • Snyk IDSNYK-UBUNTU2004-KAMAILIO-1133127
  • published7 Apr 2025
  • disclosed18 Nov 2020

Introduced: 18 Nov 2020

CVE-2020-28361  (opens in a new tab)
CWE-444  (opens in a new tab)

How to fix?

There is no fixed version for Ubuntu:20.04 kamailio.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kamailio package and not the kamailio package as distributed by Ubuntu. See How to fix? for Ubuntu:20.04 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1