PT-2019-14994 · Signal · Signal Private Messenger

Natalie · Published 2019-10-05 · Updated 2021-07-21 · CVE-2019-17191

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Signal Private Messenger versions prior to 4.47.7

Description The issue allows a caller to force a call to be answered without the callee's interaction, via a connect message. Although the callee is aware of the call, the audio channel may be open before they can take action to prevent eavesdropping.

Recommendations For versions prior to 4.47.7, update to version 4.47.7 or later to resolve the issue.

Exploit

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

CVE-2019-17191

Affected Products

Signal Private Messenger

References · 5

• 🔥 https://bugs.chromium.org/p/project-zero/issues/detail?id=1943 · Exploit
• 🔥 https://news.ycombinator.com/item?id=21161432 · Exploit
• https://osv.dev/vulnerability/CVE-2019-17191 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-17191 · Security Note
• https://twitter.com/moxie/status/1180261210341511168 · Note