8.8
High
Exploited
CVE-2019-11707 Mozilla Firefox and Thunderbird Type Confusion Vulnerability
Active exploitation observed
· CISA KEV catalogue
Required action
Apply updates per vendor instructions.
Ransomware campaigns
Not observed so far
Weakness
CWE-843
Description
A type confusion vulnerability can occur when manipulating JavaScript objects due to issues in Array.pop. This can allow for an exploitable crash. We are aware of targeted attacks in the wild abusing this flaw. This vulnerability affects Firefox ESR < 60.7.1, Firefox < 67.0.3, and Thunderbird < 60.7.2.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Firefox ESR 60.7 | earliest → < 60.7.1 | 60.7.1 |
| Firefox 67.0 | earliest → < 67.0.3 | 67.0.3 |
| Thunderbird 60.7 | earliest → < 60.7.2 | 60.7.2 |
References
- www.mozilla.org www.mozilla.org
- www.mozilla.org www.mozilla.org
- bugzilla.mozilla.org bugzilla.mozilla.org
- GLSA-201908-12 security.gentoo.org
Timeline
- Published
- Added to the KEV catalogue
- Last modified
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