CVE-2020-28361: Medium severity kamailio vulnerability
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 removehf function in the Kamailio textops module. Particular use of removehf 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 Software
Event History
Frequently Asked Questions
What is the severity of CVE-2020-28361?
CVE-2020-28361 is classified as a medium severity vulnerability that allows for header-removal protection bypass.
How do I fix CVE-2020-28361?
To resolve CVE-2020-28361, upgrade to Kamailio version 5.4.0 or later, which addresses the vulnerability.
What systems are affected by CVE-2020-28361?
CVE-2020-28361 affects Kamailio versions prior to 5.4.0, as well as products using these versions such as Sippy Softswitch 4.5 through 5.2.
What is the impact of CVE-2020-28361?
The impact of CVE-2020-28361 is that it allows attackers to manipulate HTTP headers, potentially leading to security vulnerabilities like header injection.
Who is responsible for the CVE-2020-28361 vulnerability?
The CVE-2020-28361 vulnerability is a result of insufficient header-removal protection in the Kamailio textops module.