Vulnerability CVE-2020-26970: Information
Description
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.
Severity: HIGH (8.8) Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Fixed packages
Package name | Branch | Fixed in version | Version from repository | Errata ID | Task # | State |
|---|---|---|---|---|---|---|
| thunderbird | sisyphus | 78.5.1-alt1 | 115.9.0-alt1 | ALT-PU-2020-3443-1 | 262794 | Fixed |
| thunderbird | p10 | 78.5.1-alt1 | 115.9.0-alt1 | ALT-PU-2020-3443-1 | 262794 | Fixed |
| thunderbird | p9 | 78.7.0-alt0.1.p9 | 102.11.0-alt0.c9.1 | ALT-PU-2021-1200-1 | 265306 | Fixed |
| thunderbird | c10f1 | 78.5.1-alt1 | 115.9.0-alt0.c10.1 | ALT-PU-2020-3443-1 | 262794 | Fixed |
| thunderbird | c9f2 | 78.7.0-alt0.1.c9 | 102.11.0-alt0.c9.1 | ALT-PU-2021-1369-1 | 264611 | Fixed |
| thunderbird | p11 | 78.5.1-alt1 | 115.9.0-alt1 | ALT-PU-2020-3443-1 | 262794 | Fixed |
References to Advisories, Solutions, and Tools
Hyperlink | Resource |
|---|---|
| https://bugzilla.mozilla.org/show_bug.cgi?id=1677338 |
|
| https://www.mozilla.org/security/advisories/mfsa2020-53/ |
|