RHSA-2020:4080 — Security Advisory

An update for firefox is now available for Red Hat Enterprise Linux 7.

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.

Mozilla Firefox is an open-source web browser, designed for standards compliance, performance, and portability.

This update upgrades Firefox to version 78.3.0 ESR.

Security Fix(es):

• Mozilla: Memory safety bugs fixed in Firefox 81 and Firefox ESR 78.3 (CVE-2020-15673)

• Mozilla: Integer overflow in nsJPEGEncoder::emptyOutputBuffer (CVE-2020-12422)

• Mozilla: X-Frame-Options bypass using object or embed tags (CVE-2020-15648)

• Mozilla: Bypassing iframe sandbox when allowing popups (CVE-2020-15653)

• Mozilla: Type confusion for special arguments in IonMonkey (CVE-2020-15656)

• Mozilla: XSS when pasting attacker-controlled data into a contenteditable element (CVE-2020-15676)

• Mozilla: Download origin spoofing via redirect (CVE-2020-15677)

• Mozilla: When recursing through layers while scrolling, an iterator may have become invalid, resulting in a potential use-after-free scenario (CVE-2020-15678)

• Mozilla: WebRTC permission prompt could have been bypassed by a compromised content process (CVE-2020-12424)

• Mozilla: Out of bound read in Date.parse() (CVE-2020-12425)

• Mozilla: Custom cursor can overlay user interface (CVE-2020-15654)

• 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.

Bug Fix(es):

• Warnings displayed when removing Firefox package (BZ#1868842)