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Out-of-bounds Write Affecting thunderbird package, versions <1:78.5.1-1

0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.18% (56th percentile)
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NVD
8.8 high
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Red Hat
8.8 high
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SUSE
8.8 high

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  • Snyk ID SNYK-DEBIAN11-THUNDERBIRD-1047867
  • published 2 Dec 2020
  • disclosed 9 Dec 2020
Report a new vulnerability Found a mistake?

Introduced: 2 Dec 2020

CVE-2020-26970 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Debian:11 thunderbird to version 1:78.5.1-1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Debian. See How to fix? for Debian:11 relevant fixed versions and status.

When reading SMTP server status codes, Thunderbird writes an integer value to a position on the stack that is intended to contain just one byte. Depending on processor architecture and stack layout, this leads to stack corruption that may be exploitable. This vulnerability affects Thunderbird < 78.5.1.