CVE-2020-28361
Medium
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.
SeverityMedium
CVSS5.4
Exploit probability—
ProductKamailio
PublishedNov 18, 2020
First seenNov 18, 2020
How to fix
Update
- kamailio kamailio5.4.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| kamailio kamailio | v < 5.4.0 | 5.4.0 |
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