CVE-2020-15658

MEDIUM

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.

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html

https://bugzilla.mozilla.org/show_bug.cgi?id=1637745

https://usn.ubuntu.com/4443-1/

https://www.mozilla.org/security/advisories/mfsa2020-30/

https://www.mozilla.org/security/advisories/mfsa2020-32/

https://www.mozilla.org/security/advisories/mfsa2020-33/

Details

Source: MITRE

Published: 2020-08-10

Updated: 2020-08-18

Type: CWE-754

Risk Information

CVSS v2.0

Base Score: 4.3

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

Impact Score: 2.9

Exploitability Score: 8.6

Severity: MEDIUM

CVSS v3.0

Base Score: 6.5

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

Impact Score: 3.6

Exploitability Score: 2.8

Severity: MEDIUM