5.3 Medium
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
LOW
Integrity Impact
NONE
Availability Impact
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
0.001 Low
EPSS
Percentile
32.0%
firefox and thunderbird are vulnerable to Information Disclosure. An attacker could exploit this vulnerability by creating a malicious website that would contain a specially crafted off-screen canvas element. When the victim visited the website, the off-screen canvas element would be able to access image data from other sites, even if those sites were not in the same origin. This could be used to steal the victim’s personal information or to track their browsing activity.
bugzilla.mozilla.org/show_bug.cgi?id=1833876
lists.debian.org/debian-lts-announce/2023/08/msg00008.html
lists.debian.org/debian-lts-announce/2023/08/msg00010.html
security-tracker.debian.org/tracker/CVE-2023-4045
www.debian.org/security/2023/dsa-5464
www.debian.org/security/2023/dsa-5469
www.mozilla.org/security/advisories/mfsa2023-29/
www.mozilla.org/security/advisories/mfsa2023-30/
www.mozilla.org/security/advisories/mfsa2023-31/