Home/CVE/The Signal Private Messenger application before 4.47.7 for Android allows a caller to force a call to be answered, witho
CVE

CVE-2019-17191

The Signal Private Messenger application before 4.47.7 for Android allows a caller to force a call to be answered, witho

The Signal Private Messenger application before 4.47.7 for Android allows a caller to force a call to be answered, without callee user interaction, via a connect message. The existence of the call is noticeable to the callee.

however, the audio channel may be open before the callee can block eavesdropping.

HIGH · CVSS 7.5 EPSS 0.00319
Act now
  • Public exploit or PoC is available
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-863Incorrect Authorization
▤

Affected Products & Versions

1
signal private messenger< 4.47.7
⚠

Public Exploits & PoCs

2
pocbugs.chromium.org · detail?id=1943bugs.chromium.org
pocnews.ycombinator.com · item?id=21161432news.ycombinator.com
▣

Scoring & Timeline

7.5
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD05 Oct 2019 · 02:15 AM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
🔗

References & Sources

1
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://twitter.com/moxie/status/1180261210341511168Third Party Advisory
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