CVE-2020-28361
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.
Does this matter?
Lower severity and a low EPSS score (1.11%). Track it; it rarely justifies an emergency change on its own.
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 3.1
- 5.4 MEDIUMCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
- EPSS
- 1.11% probability · 64th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-444
- Affected
- kamailio/kamailio
- Source
- cve@mitre.org
References
- https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.htmlExploit, Third Party Advisory, VDB Entry
- https://support.sippysoft.com/support/discussions/topics/3000179616Permissions Required
- https://packetstormsecurity.com/files/159030/Kamailio-5.4.0-Header-Smuggling.htmlExploit, Third Party Advisory, VDB Entry
- https://support.sippysoft.com/support/discussions/topics/3000179616Permissions Required
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.