CVE-2019-9793 (GCVE-0-2019-9793)

Vulnerability from cvelistv5 – Published: 2019-04-26 16:13 – Updated: 2024-08-04 22:01
VLAI?
Summary
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.
Severity ?
No CVSS data available.
CWE
  • Improper bounds checks when Spectre mitigations are disabled
Assigner
References
Impacted products
Vendor Product Version
Mozilla Thunderbird Affected: unspecified , < 60.6 (custom)
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    Mozilla Firefox ESR Affected: unspecified , < 60.6 (custom)
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    Mozilla Firefox Affected: unspecified , < 66 (custom)
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  }
}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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