CVE-2020-15646

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

If an attacker intercepts Thunderbird's initial attempt to perform automatic account setup using the Microsoft Exchange autodiscovery mechanism, and the attacker sends a crafted response, then Thunderbird sends username and password over https to a server controlled by the attacker. This vulnerability affects Thunderbird < 68.10.0.

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1606610

https://www.mozilla.org/security/advisories/mfsa2020-26/

Details

Source: MITRE

Published: 2020-10-08

Updated: 2021-07-21

Type: CWE-522

Risk Information

CVSS v2

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3

Base Score: 5.9

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

Impact Score: 3.6

Exploitability Score: 2.2

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
154550NewStart CGSL CORE 5.05 / MAIN 5.05 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0140)NessusNewStart CGSL Local Security Checks
high
147331NewStart CGSL MAIN 6.02 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0056)NessusNewStart CGSL Local Security Checks
high
147312NewStart CGSL MAIN 4.06 : thunderbird Multiple Vulnerabilities (NS-SA-2021-0002)NessusNewStart CGSL Local Security Checks
critical
144001NewStart CGSL CORE 5.04 / MAIN 5.04 : thunderbird Multiple Vulnerabilities (NS-SA-2020-0083)NessusNewStart CGSL Local Security Checks
high
139041RHEL 8 : thunderbird (RHSA-2020:3038)NessusRed Hat Local Security Checks
high
138976Oracle Linux 8 : thunderbird (ELSA-2020-3038)NessusOracle Linux Local Security Checks
high