Vulnerability Details : CVE-2019-17192
The WebRTC component in the Signal Private Messenger application through 4.47.7 for Android processes videoconferencing RTP packets before a callee chooses to answer a call, which might make it easier for remote attackers to cause a denial of service or possibly have unspecified other impact via malformed packets. NOTE: the vendor plans to continue this behavior for performance reasons unless a WebRTC design change occurs
Vulnerability category: Denial of service
Products affected by CVE-2019-17192
- cpe:2.3:a:signal:private_messenger:*:*:*:*:*:android:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-17192
1.15%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 77 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-17192
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2019-17192
-
The code contains a control flow path that does not reflect the algorithm that the path is intended to implement, leading to incorrect behavior any time this path is navigated.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-17192
-
https://twitter.com/moxie/status/1180226374851710976
Moxie Marlinspike on Twitter: "@taviso @natashenka We haven't had much luck with considerations like this from the webrtc team over there. If this is something you're concerned about, could you help bThird Party Advisory
-
https://bugs.chromium.org/p/project-zero/issues/detail?id=1936
1936 - Signal: RTP is processed before call is answered - project-zero - Project Zero - MonorailThird Party Advisory
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https://news.ycombinator.com/item?id=21161432
Signal: Incoming call can be connected without user interaction | Hacker NewsThird Party Advisory
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