Improper Input Validation Affecting thunderbird package, versions <0:52.2.0-1.el7_3
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applicationsSnyk Learn
Learn about Improper Input Validation vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-RHEL7-THUNDERBIRD-4728518
- published26 Jul 2021
- disclosed14 Jun 2017
Introduced: 14 Jun 2017
CVE-2017-7764 (opens in a new tab)How to fix?
Upgrade RHEL:7 thunderbird to version 0:52.2.0-1.el7_3 or higher.
This issue was patched in RHSA-2017:1561.
NVD Description
Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
Characters from the "Canadian Syllabics" unicode block can be mixed with characters from other unicode blocks in the addressbar instead of being rendered as their raw "punycode" form, allowing for domain name spoofing attacks through character confusion. The current Unicode standard allows characters from "Aspirational Use Scripts" such as Canadian Syllabics to be mixed with Latin characters in the "moderately restrictive" IDN profile. We have changed Firefox behavior to match the upcoming Unicode version 10.0 which removes this category and treats them as "Limited Use Scripts.". This vulnerability affects Firefox < 54, Firefox ESR < 52.2, and Thunderbird < 52.2.
References
- http://www.securityfocus.com/bid/99057
- https://bugzilla.mozilla.org/show_bug.cgi?id=1364283
- https://www.mozilla.org/security/advisories/mfsa2017-15/
- https://www.mozilla.org/security/advisories/mfsa2017-16/
- https://www.mozilla.org/security/advisories/mfsa2017-17/
- https://access.redhat.com/security/cve/CVE-2017-7764
- https://www.debian.org/security/2017/dsa-3881
- https://www.debian.org/security/2017/dsa-3918
- http://www.unicode.org/reports/tr31/tr31-26.html#Aspirational_Use_Scripts
- https://access.redhat.com/errata/RHSA-2017:1561
- http://www.securitytracker.com/id/1038689