Red Hat Security Advisory: firefox security update
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * firefox: thunderbird: Specially crafted WebTransport requests could lead to denial of service (CVE-2024-9399) * firefox: thunderbird: Memory safety bugs fixed in Firefox 131 and Thunderbird 131 (CVE-2024-9403) * firefox: thunderbird: Potential directory upload bypass via clickjacking (CVE-2024-9397) * firefox: thunderbird: Memory safety bugs fixed in Firefox 131, Firefox ESR 115.16, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3 (CVE-2024-9401) * firefox: thunderbird: Memory safety bugs fixed in Firefox 131, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3 (CVE-2024-9402) * firefox: thunderbird: External protocol handlers could be enumerated via popups (CVE-2024-9398) * firefox: thunderbird: Potential memory corruption during JIT compilation (CVE-2024-9400) * firefox: thunderbird: Potential memory corruption may occur when cloning certain objects (CVE-2024-9396) * firefox: thunderbird: Cross-origin access to PDF contents through multipart responses (CVE-2024-9393) * firefox: thunderbird: Cross-origin access to JSON contents through multipart responses (CVE-2024-9394) * firefox: thunderbird: Compromised content process can bypass site isolation (CVE-2024-9392) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
AI Analysis
Technical Summary
This Red Hat security advisory (RHSA-2024:7842) addresses multiple vulnerabilities in Mozilla Firefox and Thunderbird, including CVE-2024-9399 (denial of service via WebTransport requests), CVE-2024-9403 (memory safety bugs), CVE-2024-9397 (directory upload bypass via clickjacking), CVE-2024-9401 and CVE-2024-9402 (memory safety bugs), CVE-2024-9398 (external protocol handler enumeration), CVE-2024-9400 and CVE-2024-9396 (potential memory corruption), CVE-2024-9393 and CVE-2024-9394 (cross-origin access to PDF and JSON contents), and CVE-2024-9392 (site isolation bypass). These vulnerabilities affect multiple Firefox and Thunderbird versions, including Firefox 131, Firefox ESR 115.16, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3. The advisory provides updated packages for Red Hat Enterprise Linux 8.8 Extended Update Support and related variants. No CVSS scores are provided in the advisory, but Red Hat rates the update as important (high severity). No known exploits in the wild are reported. The advisory references detailed CVE pages for further information.
Potential Impact
The vulnerabilities collectively could lead to denial of service, memory corruption, bypass of security protections such as site isolation, unauthorized cross-origin data access, and potential bypass of upload restrictions via clickjacking. These issues may allow attackers to disrupt browser or email client functionality, access sensitive data across origins, or execute arbitrary code due to memory safety bugs. The impact affects users of the specified Firefox and Thunderbird versions on Red Hat Enterprise Linux 8.8 Extended Update Support platforms.
Mitigation Recommendations
Red Hat has released updated Firefox packages (version 128.3.0-1.el8_8 and related) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 8.8 Extended Update Support variants should apply the provided security update promptly. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are specified beyond applying the official update.
Red Hat Security Advisory: firefox security update
Description
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability. Security Fix(es): * firefox: thunderbird: Specially crafted WebTransport requests could lead to denial of service (CVE-2024-9399) * firefox: thunderbird: Memory safety bugs fixed in Firefox 131 and Thunderbird 131 (CVE-2024-9403) * firefox: thunderbird: Potential directory upload bypass via clickjacking (CVE-2024-9397) * firefox: thunderbird: Memory safety bugs fixed in Firefox 131, Firefox ESR 115.16, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3 (CVE-2024-9401) * firefox: thunderbird: Memory safety bugs fixed in Firefox 131, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3 (CVE-2024-9402) * firefox: thunderbird: External protocol handlers could be enumerated via popups (CVE-2024-9398) * firefox: thunderbird: Potential memory corruption during JIT compilation (CVE-2024-9400) * firefox: thunderbird: Potential memory corruption may occur when cloning certain objects (CVE-2024-9396) * firefox: thunderbird: Cross-origin access to PDF contents through multipart responses (CVE-2024-9393) * firefox: thunderbird: Cross-origin access to JSON contents through multipart responses (CVE-2024-9394) * firefox: thunderbird: Compromised content process can bypass site isolation (CVE-2024-9392) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This Red Hat security advisory (RHSA-2024:7842) addresses multiple vulnerabilities in Mozilla Firefox and Thunderbird, including CVE-2024-9399 (denial of service via WebTransport requests), CVE-2024-9403 (memory safety bugs), CVE-2024-9397 (directory upload bypass via clickjacking), CVE-2024-9401 and CVE-2024-9402 (memory safety bugs), CVE-2024-9398 (external protocol handler enumeration), CVE-2024-9400 and CVE-2024-9396 (potential memory corruption), CVE-2024-9393 and CVE-2024-9394 (cross-origin access to PDF and JSON contents), and CVE-2024-9392 (site isolation bypass). These vulnerabilities affect multiple Firefox and Thunderbird versions, including Firefox 131, Firefox ESR 115.16, Firefox ESR 128.3, Thunderbird 131, and Thunderbird 128.3. The advisory provides updated packages for Red Hat Enterprise Linux 8.8 Extended Update Support and related variants. No CVSS scores are provided in the advisory, but Red Hat rates the update as important (high severity). No known exploits in the wild are reported. The advisory references detailed CVE pages for further information.
Potential Impact
The vulnerabilities collectively could lead to denial of service, memory corruption, bypass of security protections such as site isolation, unauthorized cross-origin data access, and potential bypass of upload restrictions via clickjacking. These issues may allow attackers to disrupt browser or email client functionality, access sensitive data across origins, or execute arbitrary code due to memory safety bugs. The impact affects users of the specified Firefox and Thunderbird versions on Red Hat Enterprise Linux 8.8 Extended Update Support platforms.
Mitigation Recommendations
Red Hat has released updated Firefox packages (version 128.3.0-1.el8_8 and related) that address these vulnerabilities. Users of affected Red Hat Enterprise Linux 8.8 Extended Update Support variants should apply the provided security update promptly. Detailed update instructions are available at https://access.redhat.com/articles/11258. No additional mitigations are specified beyond applying the official update.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2024:7842
- Cve Count
- 12
- Additional Cves
- ["CVE-2024-9392","CVE-2024-9393","CVE-2024-9394","CVE-2024-9396","CVE-2024-9397","CVE-2024-9398","CVE-2024-9399","CVE-2024-9400","CVE-2024-9401","CVE-2024-9402","CVE-2024-9403"]
Threat ID: 6a3de7294853345fc1127425
Added to database: 06/26/2026, 02:42:49 UTC
Last enriched: 06/26/2026, 02:48:09 UTC
Last updated: 09/10/2026, 19:36:49 UTC
Views: 49
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