CVE-2019-11744

Mozilla: XSS by breaking out of title and textarea elements using innerHTML

Severity Score

6.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Some HTML elements, such as <title> and <textarea>, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to .innerHTML on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. This vulnerability affects Firefox < 69, Thunderbird < 68.1, Thunderbird < 60.9, Firefox ESR < 60.9, and Firefox ESR < 68.1.

Algunos elementos HTML, tales como <title> y <textarea>, puede contener corchetes angulares literales sin tratarlos como un marcado. Es posible pasar una etiqueta de cierre literal a .innerHTML en estos elementos, y el contenido posterior se analizará como si estuviera fuera de la etiqueta. Esto puede conllevar a un ataque de tipo XSS si un sitio no filtra la entrada del usuario tan estrictamente para estos elementos como lo hace para otros elementos. Esta vulnerabilidad afecta a Firefox versiones anteriores a 69, Thunderbird versiones anteriores a 68.1, Thunderbird versiones anteriores a 60.9, Firefox versiones anteriores a 60.9 y Firefox ESR versiones anteriores a 68.1.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

Low

Integrity

Low

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

Partial

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2019-05-03 CVE Reserved
2019-09-04 CVE Published
2024-08-04 CVE Updated
2024-09-20 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

References (13)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00009.html	2019-10-04
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00010.html	2019-10-04
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00011.html	2019-10-04
http://lists.opensuse.org/opensuse-security-announce/2019-10/msg00017.html	2019-10-04
https://security.gentoo.org/glsa/201911-07	2019-10-04
https://usn.ubuntu.com/4150-1	2019-10-04
https://www.mozilla.org/security/advisories/mfsa2019-25	2019-10-04
https://www.mozilla.org/security/advisories/mfsa2019-26	2019-10-04
https://www.mozilla.org/security/advisories/mfsa2019-27	2019-10-04
https://www.mozilla.org/security/advisories/mfsa2019-29	2019-10-04
https://www.mozilla.org/security/advisories/mfsa2019-30	2019-10-04
https://access.redhat.com/security/cve/CVE-2019-11744	2019-09-19
https://bugzilla.redhat.com/show_bug.cgi?id=1748655	2019-09-19

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Mozilla Search vendor "Mozilla"		Firefox Search vendor "Mozilla" for product "Firefox"				< 69.0 Search vendor "Mozilla" for product "Firefox" and version " < 69.0"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				< 60.9 Search vendor "Mozilla" for product "Firefox Esr" and version " < 60.9"		-		Affected
Mozilla Search vendor "Mozilla"		Firefox Esr Search vendor "Mozilla" for product "Firefox Esr"				>= 68.0 < 68.1 Search vendor "Mozilla" for product "Firefox Esr" and version " >= 68.0 < 68.1"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				< 60.9 Search vendor "Mozilla" for product "Thunderbird" and version " < 60.9"		-		Affected
Mozilla Search vendor "Mozilla"		Thunderbird Search vendor "Mozilla" for product "Thunderbird"				>= 68.0 < 68.1 Search vendor "Mozilla" for product "Thunderbird" and version " >= 68.0 < 68.1"		-		Affected