Cross-site Scripting (XSS) Affecting thunderbird-debuginfo package, versions <0:68.2.0-1.amzn2.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.15% (54th percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRDDEBUGINFO-1677755
  • published27 Sept 2021
  • disclosed8 Jan 2020

Introduced: 8 Jan 2020

CVE-2019-11763  (opens in a new tab)
CWE-79  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird-debuginfo to version 0:68.2.0-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2019-1376.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird-debuginfo package and not the thunderbird-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

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.

CVSS Scores

version 3.1