CVE-2020-5753

medium
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

Signal Private Messenger Android v4.59.0 and up and iOS v3.8.1.5 and up allows a remote non-contact to ring a victim's Signal phone and disclose currently used DNS server due to ICE Candidate handling before call is answered or declined.

References

https://www.tenable.com/security/research/tra-2020-33

Details

Source: MITRE

Published: 2020-05-20

Updated: 2021-07-21

Type: CWE-200

Risk Information

CVSS v2

Base Score: 5

Vector: AV:N/AC:L/Au:N/C:P/I:N/A:N

Impact Score: 2.9

Exploitability Score: 10

Severity: MEDIUM

CVSS v3

Base Score: 5.3

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Impact Score: 1.4

Exploitability Score: 3.9

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:signal:signal:*:*:*:*:*:iphone_os:*:* versions up to 3.8.1.5 (inclusive)

cpe:2.3:a:signal:signal_private_messenger:*:*:*:*:*:android:*:* versions up to 4.59.0 (inclusive)