CVE-2019-9813
N/A
Published: April 26, 2019 at 04:09 PM UTC
Updated: June 17, 2026 at 02:44 AM UTC
2 products affected across 1 vendorFirefoxThunderbird
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Severity
N/A
Exploit prediction
EPSS 7%
Description
Incorrect handling of __proto__ mutations may lead to type confusion in IonMonkey JIT code and can be leveraged for arbitrary memory read and write. This vulnerability affects Firefox < 66.0.1, Firefox ESR < 60.6.1, and Thunderbird < 60.6.1.
Affected
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
v < 60.6.1v < 66.0.1
Affected range stops below 66.0.1, so it looks safe — our inference, not a vendor statement
v < 60.6.1
Affected range stops below 60.6.1, so it looks safe — our inference, not a vendor statement
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
References (6)
Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:0966Vendor Advisoryx_refsource_REDHAT
Source: [email protected]
https://access.redhat.com/errata/RHSA-2019:1144x_refsource_MISCIssue TrackingPermissions RequiredVendor Advisory
Source: [email protected]
https://bugzilla.mozilla.org/show_bug.cgi?id=1538006x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2019-09/x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2019-10/x_refsource_MISCVendor Advisory
Source: [email protected]
https://www.mozilla.org/security/advisories/mfsa2019-12/Quick Info
StatusMODIFIED
CWE
CWE-843
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