| Package | Affected versions | Patched versions |
|---|---|---|
| kamailio | < 5.4.0 | 5.4.0 |
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.
Running one of these products? Scan your site to see whether it exposes a vulnerable version.
Scan my site free