Vulnerability Details : CVE-2020-6798
If a template tag was used in a select tag, the parser could be confused and allow JavaScript parsing and execution when it should not be allowed. A site that relied on the browser behaving correctly could suffer a cross-site scripting vulnerability as a result. In general, this flaw cannot be exploited through email in the Thunderbird product because scripting is disabled when reading mail, but is potentially a risk in browser or browser-like contexts. This vulnerability affects Thunderbird < 68.5, Firefox < 73, and Firefox < ESR68.5.
Vulnerability category: Cross site scripting (XSS)
Products affected by CVE-2020-6798
- cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:*:*:*:*
- cpe:2.3:a:mozilla:firefox_esr:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2020-6798
1.03%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 75 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2020-6798
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
4.3
|
MEDIUM | AV:N/AC:M/Au:N/C:N/I:P/A:N |
8.6
|
2.9
|
NIST | |
|
6.1
|
MEDIUM | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
2.8
|
2.7
|
NIST |
CWE ids for CVE-2020-6798
-
The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.Assigned by: nvd@nist.gov (Primary)
References for CVE-2020-6798
-
https://usn.ubuntu.com/4278-2/
USN-4278-2: Firefox vulnerabilities | Ubuntu security notices
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https://www.mozilla.org/security/advisories/mfsa2020-07/
Security Vulnerabilities fixed in Thunderbird 68.5 — MozillaVendor Advisory
-
https://security.gentoo.org/glsa/202003-02
Mozilla Firefox: Multiple vulnerabilities (GLSA 202003-02) — Gentoo security
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https://www.mozilla.org/security/advisories/mfsa2020-05/
Security Vulnerabilities fixed in Firefox 73 — MozillaVendor Advisory
-
https://bugzilla.mozilla.org/show_bug.cgi?id=1602944
Access DeniedPermissions Required
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https://usn.ubuntu.com/4335-1/
USN-4335-1: Thunderbird vulnerabilities | Ubuntu security notices
-
https://www.mozilla.org/security/advisories/mfsa2020-06/
Security Vulnerabilities fixed in Firefox ESR68.5 — MozillaVendor Advisory
-
https://usn.ubuntu.com/4328-1/
USN-4328-1: Thunderbird vulnerabilities | Ubuntu security notices
-
https://security.gentoo.org/glsa/202003-10
Mozilla Thunderbird: Multiple vulnerabilities (GLSA 202003-10) — Gentoo security
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