Code Injection in Mozilla Thunderbird - CVE-2020-15685

CSH
CYBERSECURITY HELP
Sign In REGISTER
 
Main Vulnerability Database Vulnerabilities #VU50038

Code Injection in Mozilla Thunderbird - CVE-2020-15685

Published: January 26, 2021


Vulnerability identifier: #VU50038
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2020-15685
CWE-ID: CWE-94
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to bypass certain security restrictions.

The vulnerability exists due to improper input validation when processing plaintext phase of the IMAP STARTTLS connection setup. A remote attacker can pass protocol commands, which can be evaluated within the encrypted session.


Affected software

Mozilla Thunderbird
Arch Linux
Gentoo Linux
Red Hat Enterprise Linux for Power, little endian
Red Hat Enterprise Linux Desktop
Red Hat Enterprise Linux Workstation
Red Hat Enterprise Linux Server
Red Hat Enterprise Linux for ARM 64
Red Hat Enterprise Linux for x86_64
Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Enterprise Linux Server - TUS
Ubuntu
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Enterprise Linux Server for x86_64 - Update Services for SAP Solutions
thunderbird (Debian package)
thunderbird (Red Hat package)
thunderbird (Alpine package)
thunderbird (Ubuntu package)

How to mitigate CVE-2020-15685

Install updates from vendor's website.

Mozilla Thunderbird - update to 78.7.0
thunderbird (Debian package) - update to 78.7.0-1~deb10u1
thunderbird (Red Hat package) - addressed in versions 78.7.0-1.el7_9, 78.7.0-1.el8_1, 78.7.0-1.el8_2, 78.7.0-1.el8_3
thunderbird (Alpine package) - update to 78.7.0-r0
thunderbird (Ubuntu package) - update to 1:78.7.1+build1-0ubuntu0.20.10.4

External References

Related Security Bulletins