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CVE-2019-9796

Date: April 26, 2019

A use-after-free vulnerability can occur when the SMIL animation controller incorrectly registers with the refresh driver twice when only a single registration is expected. When a registration is later freed with the removal of the animation controller element, the refresh driver incorrectly leaves a dangling pointer to the driver's observer array. This vulnerability affects Thunderbird < 60.6, Firefox ESR < 60.6, and Firefox < 66.

Language: Unix

Severity Score

Related Resources (12)

https://access.redhat.com/errata/RHSA-2019:1144
https://www.mozilla.org/security/advisories/mfsa2019-08/
https://access.redhat.com/security/cve/CVE-2019-9796
https://security-tracker.debian.org/tracker/CVE-2019-9796
https://bugzilla.mozilla.org/show_bug.cgi?id=1531277
https://people.canonical.com/~ubuntu-security/cve/CVE-2019-9796
https://access.redhat.com/errata/RHSA-2019:0966
https://www.mozilla.org/security/advisories/mfsa2019-11/
https://nvd.nist.gov/vuln/detail/CVE-2019-9796
https://www.mozilla.org/security/advisories/mfsa2019-07/
https://security.alpinelinux.org/vuln/CVE-2019-9796
https://www.mend.io/vulnerability-database/CVE-2019-9796

Severity Score

Weakness Type (CWE)

Use After Free

CWE-416

CVSS v3.1

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

CVSS v2

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

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