Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Kamailio | Kamailio | < 5.4.0 |
Related Weaknesses (CWE)
References
- https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.htmExploitThird Party AdvisoryVDB Entry
- https://support.sippysoft.com/support/discussions/topics/3000179616Permissions Required
- https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.htmExploitThird Party AdvisoryVDB Entry
- https://support.sippysoft.com/support/discussions/topics/3000179616Permissions Required
FAQ
What is CVE-2020-28361?
CVE-2020-28361 is a vulnerability with a CVSS score of 5.4 (MEDIUM). 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. T...
How severe is CVE-2020-28361?
CVE-2020-28361 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2020-28361?
Check the references section above for vendor advisories and patch information. Affected products include: Kamailio Kamailio.