ASA-2019-00436 – Mozilla Firefox and Thunderbird: HTML parsing error can contribute to content XSS


Allele Security Alert

ASA-2019-00436

Identifier(s)

ASA-2019-00436, CVE-2019-11715, MFSA2019-21, MFSA2019-22, MFSA2019-23

Title

HTML parsing error can contribute to content XSS

Vendor(s)

Mozilla

Product(s)

Mozilla Firefox
Mozilla Firefox ESR
Mozilla Thunderbird

Affected version(s)

Mozilla Firefox versions before 68
Mozilla Firefox ESR versions before 60.8
Mozilla Thunderbird versions before 60.8

Fixed version(s)

Mozilla Firefox version 68
Mozilla Firefox ESR version 60.8
Mozilla Thunderbird version 60.8

Proof of concept

Unknown

Description

Due to an error while parsing page content, it is possible for properly sanitized user input to be misinterpreted and lead to XSS hazards on web sites in certain circumstances.

Technical details

Unknown

Credits

Linus Särud

Reference(s)

Mozilla Foundation Security Advisory 2019-21
https://www.mozilla.org/en-US/security/advisories/mfsa2019-21/#CVE-2019-11715

Mozilla Foundation Security Advisory 2019-22
https://www.mozilla.org/en-US/security/advisories/mfsa2019-22/#CVE-2019-11715

Mozilla Foundation Security Advisory 2019-23
https://www.mozilla.org/en-US/security/advisories/mfsa2019-23/#CVE-2019-11715

Bug 1555523
https://bugzilla.mozilla.org/show_bug.cgi?id=1555523

CVE-2019-11715
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-11715

CVE-2019-11715
https://nvd.nist.gov/vuln/detail/CVE-2019-11715

If there is any error in this alert or you wish a comprehensive analysis, let us know.

Last modified: July 23, 2019

We are not responsible for any data loss, device corruption or any other type of issue due to the use of any information mentioned in our security alerts.