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CVE-2019-11758

Date: January 8, 2020

Mozilla community member Philipp reported a memory safety bug present in Firefox 68 when 360 Total Security was installed. This bug showed evidence of memory corruption in the accessibility engine and we presume that with enough effort that it could be exploited to run arbitrary code. This vulnerability affects Firefox < 69, Thunderbird < 68.2, and Firefox ESR < 68.2.

Severity Score

Related Resources (9)

https://security.alpinelinux.org/vuln/CVE-2019-11758
https://usn.ubuntu.com/4335-1/
https://www.mozilla.org/security/advisories/mfsa2019-33/
https://www.mozilla.org/security/advisories/mfsa2019-25/
https://nvd.nist.gov/vuln/detail/CVE-2019-11758
https://bugzilla.mozilla.org/show_bug.cgi?id=1536227
https://www.mozilla.org/security/advisories/mfsa2019-35/
https://access.redhat.com/security/cve/CVE-2019-11758
https://www.mend.io/vulnerability-database/CVE-2019-11758

Severity Score

Weakness Type (CWE)

Buffer Errors

CWE-119

Out-of-bounds Write

CWE-787

CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): REQUIRED
Scope (S): UNCHANGED
Confidentiality (C): HIGH
Integrity (I): HIGH
Availability (A): HIGH

CVSS v2

Base Score:
Access Vector (AV): NETWORK
Access Complexity (AC): MEDIUM
Authentication (AU): NONE
Confidentiality (C): PARTIAL
Integrity (I): PARTIAL
Availability (A): PARTIAL
Additional information:

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