RHSA-2020:3555 — Security Advisory
Red Hat Security Advisory: firefox security update
Severity
ImportantRed Hat Product Security
Products
Official CSAF product identity
Published · August 26, 2020
Updated · January 14, 2026
Topic
An update for firefox is now available for Red Hat Enterprise Linux 8.0 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Description
Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.
This update upgrades Firefox to version 78.2.0 ESR.
Security Fix(es):
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Mozilla: Attacker-induced prompt for extension installation (CVE-2020-15664)
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Mozilla: Use-After-Free when aborting an operation (CVE-2020-15669)
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Mozilla: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (CVE-2020-12422)
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Mozilla: X-Frame-Options bypass using object or embed tags (CVE-2020-15648)
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Mozilla: Bypassing iframe sandbox when allowing popups (CVE-2020-15653)
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Mozilla: Type confusion for special arguments in IonMonkey (CVE-2020-15656)
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Mozilla: WebRTC permission prompt could have been bypassed by a compromised content process (CVE-2020-12424)
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Mozilla: Out of bound read in Date.parse() (CVE-2020-12425)
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Mozilla: Custom cursor can overlay user interface (CVE-2020-15654)
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Mozilla: Overriding file type when saving to disk (CVE-2020-15658)
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.