Vulnerability Details : CVE-2020-15654
When in an endless loop, a website specifying a custom cursor using CSS could make it look like the user is interacting with the user interface, when they are not. This could lead to a perceived broken state, especially when interactions with existing browser dialogs and warnings do not work. This vulnerability affects Firefox ESR < 78.1, Firefox < 79, and Thunderbird < 78.1.
Exploit prediction scoring system (EPSS) score for CVE-2020-15654
Probability of exploitation activity in the next 30 days: 0.33%
Percentile, the proportion of vulnerabilities that are scored at or less: ~ 67 % EPSS Score History EPSS FAQ
CVSS scores for CVE-2020-15654
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source |
|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST |
|
6.5
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N |
2.8
|
3.6
|
NIST |
CWE ids for CVE-2020-15654
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The product contains an iteration or loop with an exit condition that cannot be reached, i.e., an infinite loop.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-15654
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1648333
Access DeniedIssue Tracking;Vendor Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-08/msg00025.html
[security-announce] openSUSE-SU-2020:1189-1: important: Security updateThird Party Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-32/
Security Vulnerabilities fixed in Firefox ESR 78.1 — MozillaVendor Advisory
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https://usn.ubuntu.com/4443-1/
USN-4443-1: Firefox vulnerabilities | Ubuntu security notices | UbuntuThird Party Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-33/
Security Vulnerabilities fixed in Thunderbird 78.1 — MozillaVendor Advisory
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https://www.mozilla.org/security/advisories/mfsa2020-30/
Security Vulnerabilities fixed in Firefox 79 — MozillaVendor Advisory
Products affected by CVE-2020-15654
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*