#VU109792 Input validation error in Certified Asterisk and Asterisk Open Source - CVE-2025-47779
Vulnerability identifier: #VU109792
Vulnerability risk: Medium
CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N/E:U/U:Green]
CVE-ID:
CWE-ID:
CWE-20
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Certified Asterisk
Server applications /
Conferencing, Collaboration and VoIP solutions
Asterisk Open Source
Server applications /
Conferencing, Collaboration and VoIP solutions
Vendor: Digium (Linux Support Services)
Description
The vulnerability allows a remote user to perform spoofing attack.
The vulnerability exists due to insufficient validation of MESSAGE SIP requests when handling the From header with a semicolon or NULL in the name portion. A remote authenticated user can spoof any user identity to send spam messages to the application users.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Certified Asterisk: 18.9-cert1, 18.9-cert2 - 20.7-cert3, 18.9-cert3, 18.9-cert4, 18.9-cert5, 18.9-cert6, 18.9-cert7, 18.9-cert8, 18.9-cert9, 18.9-cert10, 18.9-cert12, 20.7-cert1, 20.7-cert4
Asterisk Open Source: 18.0.0 rc1, 18.0.1, 18.1.0 rc1, 18.1.1, 18.2.0 rc1, 18.2.1, 18.2.2, 18.3.0, 18.3.0 rc1, 18.4.0, 18.4.0 rc1 - 20.8.1, 18.5.0 - 20.14.0, 18.5.0 rc1 - 21.4.2, 18.5.1 - 22.1.1, 18.6.0 - 22.4.0, 18.6.0 rc1, 18.7.0 rc1, 18.7.1, 18.8.0 rc1, 18.9.0, 18.9.0 rc1, 18.10.0, 18.10.0 rc1, 18.10.1, 18.11.0, 18.11.0 rc1, 18.11.1, 18.11.2, 18.11.3, 18.12.0, 18.12.0 rc1, 18.12.1, 18.13.0, 18.13.0 rc1, 18.14.0, 18.14.0 rc1, 18.14.0 rc2, 18.15.0, 18.15.0 rc1, 18.15.0 rc2, 18.15.1, 18.16.0, 18.16.0 rc1, 18.16.0 rc2, 18.17.0, 18.17.0 rc1, 18.17.1, 18.18.0, 18.18.1, 18.19.0, 18.20.0, 18.20.1, 18.20.2, 18.21.0, 18.22.0, 18.23.0, 18.23.1, 18.24.0, 18.24.1, 18.24.2, 18.24.3, 18.25.0, 18.26.0, 18.26.1, 19.0.0 rc1, 19.1.0 rc1, 19.2.0, 19.2.0 rc1, 19.2.1, 19.3.0, 19.3.0 rc1, 19.3.1, 19.3.2, 19.3.3, 19.4.0, 19.4.0 rc1, 19.4.1, 19.5.0, 19.5.0 rc1, 19.6.0, 19.6.0 rc1, 19.6.0 rc2, 19.7.0, 19.7.0 rc1, 19.7.0 rc2, 19.7.1, 19.8.0, 19.8.0 rc1, 19.8.0 rc2, 19.8.1, 20.0.0, 20.0.0 rc1, 20.0.0 rc2, 20.0.1, 20.1.0, 20.1.0 rc1, 20.1.0 rc2, 20.2.0, 20.2.0 rc1, 20.2.1
External links
https://github.com/asterisk/asterisk/security/advisories/GHSA-2grh-7mhv-fcfw
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.
