Vulnerability identifier: #VU46965
Vulnerability risk: Medium
CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]
CVE-ID:
CWE-ID:
CWE-416
Exploitation vector: Network
Exploit availability: No
Vulnerable software:
Mozilla Firefox
Client/Desktop applications /
Web browsers
Firefox ESR
Client/Desktop applications /
Web browsers
Vendor: Mozilla
Description
The vulnerability allows a remote attacker to compromise vulnerable system.
The vulnerability exists due to a use-after-free error when processing HTML content. When recursing through graphical layers while scrolling, an iterator may
have become invalid, resulting in a potential use-after-free. This
occurs because the function APZCTreeManager::ComputeClippedCompositionBounds
did not follow iterator invalidation rules.
Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.
Mitigation
Install updates from vendor's website.
Vulnerable software versions
Mozilla Firefox: 60.0 - 80.0.1
Firefox ESR: 60.0 - 60.9.0, 68.0 - 68.12.0, 78.0 - 78.2.0
External links
http://www.mozilla.org/en-US/security/advisories/mfsa2020-42/
http://www.mozilla.org/en-US/security/advisories/mfsa2020-43/
Can this vulnerability be exploited remotely?
Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.
Is there known malware, which exploits this vulnerability?
No. We are not aware of malware exploiting this vulnerability.