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Mozilla » Firefox Esr : Security Vulnerabilities Published In 2020 (Cross Site Scripting (XSS))

2020 : January February March April May June July August September October November December

CVSS Scores Greater Than: 0 1 2 3 4 5 6 7 8 9

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#	CVE ID	CWE ID	# of Exploits	Vulnerability Type(s)	Publish Date	Update Date	Score	Gained Access Level	Access	Complexity	Authentication	Conf.	Integ.	Avail.
1	CVE-2020-26958	79		XSS Bypass	2020-12-09	2020-12-10	4.3	None	Remote	Medium	Not required	None	Partial	None
Firefox did not block execution of scripts with incorrect MIME types when the response was intercepted and cached through a ServiceWorker. This could lead to a cross-site script inclusion vulnerability, or a Content Security Policy bypass. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
2	CVE-2020-26956	79		XSS	2020-12-09	2020-12-10	4.3	None	Remote	Medium	Not required	None	Partial	None
In some cases, removing HTML elements during sanitization would keep existing SVG event handlers and therefore lead to XSS. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
3	CVE-2020-26951	79		XSS Bypass	2020-12-09	2020-12-09	4.3	None	Remote	Medium	Not required	None	Partial	None
A parsing and event loading mismatch in Firefox's SVG code could have allowed load events to fire, even after sanitization. An attacker already capable of exploiting an XSS vulnerability in privileged internal pages could have used this attack to bypass our built-in sanitizer. This vulnerability affects Firefox < 83, Firefox ESR < 78.5, and Thunderbird < 78.5.
4	CVE-2020-15676	79		XSS	2020-10-01	2020-11-02	4.3	None	Remote	Medium	Not required	None	Partial	None
Firefox sometimes ran the onload handler for SVG elements that the DOM sanitizer decided to remove, resulting in JavaScript being executed after pasting attacker-controlled data into a contenteditable element. This vulnerability affects Firefox < 81, Thunderbird < 78.3, and Firefox ESR < 78.3.
5	CVE-2020-6798	79		XSS	2020-03-02	2020-03-12	4.3	None	Remote	Medium	Not required	None	Partial	None
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.
6	CVE-2019-17022	79		XSS	2020-01-08	2020-01-13	4.3	None	Remote	Medium	Not required	None	Partial	None
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer does not escape < and > characters. Because the resulting string is pasted directly into the text node of the element this does not result in a direct injection into the webpage; however, if a webpage subsequently copies the node's innerHTML, assigning it to another innerHTML, this would result in an XSS vulnerability. Two WYSIWYG editors were identified with this behavior, more may exist. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
7	CVE-2019-17016	79		XSS	2020-01-08	2020-01-13	4.3	None	Remote	Medium	Not required	None	Partial	None
When pasting a <style> tag from the clipboard into a rich text editor, the CSS sanitizer incorrectly rewrites a @namespace rule. This could allow for injection into certain types of websites resulting in data exfiltration. This vulnerability affects Firefox ESR < 68.4 and Firefox < 72.
8	CVE-2019-11763	79		XSS	2020-01-08	2020-03-14	4.3	None	Remote	Medium	Not required	None	Partial	None
Failure to correctly handle null bytes when processing HTML entities resulted in Firefox incorrectly parsing these entities. This could have led to HTML comment text being treated as HTML which could have led to XSS in a web application under certain conditions. It could have also led to HTML entities being masked from filters - enabling the use of entities to mask the actual characters of interest from filters. This vulnerability affects Firefox < 70, Thunderbird < 68.2, and Firefox ESR < 68.2.

Total number of vulnerabilities : 8 Page : 1 (This Page)

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