Risk | Low |
Patch available | YES |
Number of vulnerabilities | 1 |
CVE-ID | N/A |
CWE-ID | CWE-345 |
Exploitation vector | Network |
Public exploit | N/A |
Vulnerable software Subscribe |
Signal Mobile applications / Apps for mobile phones |
Vendor |
Security Bulletin
This security bulletin contains one low risk vulnerability.
EUVDB-ID: #VU49847
Risk: Low
CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]
CVE-ID: N/A
CWE-ID:
CWE-345 - Insufficient Verification of Data Authenticity
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to the way the mobile application implements WebRTC features for voice and video communications. A remote attacker can send specially crafted SDP messages to the affected device while the victim is trying to make a voice or video call and intercept video and audio fragments from the victim's phone before the call is accepted by the callee.
MitigationInstall updates from vendor's website.
Vulnerable software versionsSignal: before 4.48.7
External linkshttp://www.bleepingcomputer.com/news/security/bugs-in-signal-facebook-google-chat-apps-let-attackers-spy-on-users/
http://googleprojectzero.blogspot.com/2021/01/the-state-of-state-machines.html
Q & A
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.