CVE-2020-6807

Published: Mar 25, 2020Modified: Nov 21, 2024

8.8

Vector

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

Exploitability: 2.8 / Impact: 5.9

Source: NVD

Description

When a device was changed while a stream was about to be destroyed, the <code>stream-reinit</code> task may have been executed after the stream was destroyed, causing a use-after-free and a potentially exploitable crash. This vulnerability affects Thunderbird < 68.6, Firefox < 74, Firefox < ESR68.6, and Firefox ESR < 68.6.

Affected (6)

Products: Mozilla: Firefox, Firefox Esr, Thunderbird · Canonical: Ubuntu Linux

3 products

1 product

Configuration A

3 vulnerable

Vulnerable Software	Affected Versions
Mozilla Firefox	Before 74.0
Mozilla Firefox Esr	Before 68.6.0
Mozilla Thunderbird	Before 68.6.0

Configuration B

3 vulnerable

Vulnerable Software	Affected Versions
Canonical Ubuntu Linux	Version 16.04
Canonical Ubuntu Linux	Version 18.04
Canonical Ubuntu Linux	Version 19.10

Related CWEs

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

References (12)

https://bugzilla.mozilla.org/show_bug.cgi?id=1614971

Source: security@mozilla.org

Issue TrackingPermissions Required

https://usn.ubuntu.com/4328-1/

Source: security@mozilla.org

Third Party Advisory

https://usn.ubuntu.com/4335-1/

Source: security@mozilla.org

Third Party Advisory

https://www.mozilla.org/security/advisories/mfsa2020-08/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2020-09/

Source: security@mozilla.org

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2020-10/

Source: security@mozilla.org

Vendor Advisory

https://bugzilla.mozilla.org/show_bug.cgi?id=1614971

Source: af854a3a-2127-422b-91ae-364da2661108

Issue TrackingPermissions Required

https://usn.ubuntu.com/4328-1/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://usn.ubuntu.com/4335-1/

Source: af854a3a-2127-422b-91ae-364da2661108

Third Party Advisory

https://www.mozilla.org/security/advisories/mfsa2020-08/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2020-09/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

https://www.mozilla.org/security/advisories/mfsa2020-10/

Source: af854a3a-2127-422b-91ae-364da2661108

Vendor Advisory

Timeline

No history available yet.