CVE-2019-9793

EPSS 1.6%

Vexday Risk Score

3Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS —EPSS 1.6%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado

Lifecycle

26 Apr 2019Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

A mechanism was discovered that removes some bounds checking for string, array, or typed array accesses if Spectre mitigations have been disabled. This vulnerability could allow an attacker to create an arbitrary value in compiled JavaScript, for which the range analysis will infer a fully controlled, incorrect range in circumstances where users have explicitly disabled Spectre mitigations. *Note: Spectre mitigations are currently enabled for all users by default settings.*. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Affected products

Mozilla · Firefox Mozilla · Firefox ESR Mozilla · Thunderbird

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References

https://access.redhat.com/errata/RHSA-2019:0966 https://access.redhat.com/errata/RHSA-2019:1144 https://bugzilla.mozilla.org/show_bug.cgi?id=1528829 https://www.mozilla.org/security/advisories/mfsa2019-07/https://www.mozilla.org/security/advisories/mfsa2019-08/https://www.mozilla.org/security/advisories/mfsa2019-11/