Kamailio prior to 5.4.0, as used in Sip Express Router (SER) in Sippy Softswitch 4.5 up to and including 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.
| Vulnerable Product | Search on Vulmon | Subscribe to Product |
|---|---|---|
kamailio kamailio |
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