Vulnerability Monitor

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CVE-2020-15658

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.

Published

2020-08-10T18:15:12.653

Last Modified

2024-11-21T05:05:57.647

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

CVSSv2 Vector

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

Access Vector: NETWORK
Access Complexity: MEDIUM
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: PARTIAL
Availability Impact: NONE

Exploitability Score

8.6

Impact Score

2.9

Weaknesses

Type: Primary
CWE-754

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	mozilla	firefox	< 79.0	Yes
Application	mozilla	firefox_esr	< 78.1	Yes
Application	mozilla	thunderbird	< 78.1	Yes
Operating System	canonical	ubuntu_linux	16.04	Yes
Operating System	canonical	ubuntu_linux	18.04	Yes
Operating System	canonical	ubuntu_linux	20.04	Yes

References

http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory ([email protected])
https://bugzilla.mozilla.org/show_bug.cgi?id=1637745 Issue Tracking, Permissions Required, Vendor Advisory ([email protected])
https://usn.ubuntu.com/4443-1/ Third Party Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory ([email protected])
https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory ([email protected])
http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://bugzilla.mozilla.org/show_bug.cgi?id=1637745 Issue Tracking, Permissions Required, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://usn.ubuntu.com/4443-1/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-30/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-32/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.mozilla.org/security/advisories/mfsa2020-33/ Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)