CVEvulnerability
CVE-2020-15658
6.5 MEDIUM
Official page ↗
- Status
- Modified
- Published
- 2020-08-10
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 6.5 MEDIUM — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:N/I:P/A:N
- Weaknesses
- CWE-754
Description
The code for downloading files did not properly take care of special characters, which led to an attacker being able to cut off the file ending at an earlier position, leading to a different file type being downloaded than shown in the dialog. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
Affected configurations
• mozilla firefox (< 79.0)
• mozilla firefox esr (< 78.1)
• mozilla thunderbird (< 78.1)
• canonical ubuntu linux 16.04
• canonical ubuntu linux 18.04
• canonical ubuntu linux 20.04
Related
Weakness · CWE (1)
- CWE-754 Improper Check for Unusual or Exceptional Conditions weakness
References
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1637745 Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4443-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=1637745 Issue Tracking, Permissions Required, Vendor Advisory
- https://usn.ubuntu.com/4443-1/ Third Party Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory
- https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory