RHSA-2022:0824 - Security Advisory

Topic

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 Critical. 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 91.7.0 ESR.

Security Fix(es):

• Mozilla: Use-after-free in XSLT parameter processing (CVE-2022-26485)
• Mozilla: Use-after-free in WebGPU IPC Framework (CVE-2022-26486)
• expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution (CVE-2022-25235)
• expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution (CVE-2022-25236)
• expat: Integer overflow in storeRawNames() (CVE-2022-25315)
• Mozilla: Use-after-free in text reflows (CVE-2022-26381)
• Mozilla: Browser window spoof using fullscreen mode (CVE-2022-26383)
• Mozilla: iframe allow-scripts sandbox bypass (CVE-2022-26384)
• Mozilla: Time-of-check time-of-use bug when verifying add-on signatures (CVE-2022-26387)
• Mozilla: Temporary files downloaded to /tmp and accessible by other local users (CVE-2022-26386)

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):

• Firefox 91.3.0-1 Language packs installed at /usr/lib64/firefox/langpacks cannot be used any more (BZ#2030190)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing the update, Firefox must be restarted for the changes to take effect.

Affected Products

• Red Hat Enterprise Linux Server 7 x86_64
• Red Hat Enterprise Linux Workstation 7 x86_64
• Red Hat Enterprise Linux Desktop 7 x86_64
• Red Hat Enterprise Linux for IBM z Systems 7 s390x
• Red Hat Enterprise Linux for Power, big endian 7 ppc64
• Red Hat Enterprise Linux for Power, little endian 7 ppc64le

Fixes

• BZ - 2030190 - Firefox 91.3.0-1 Language packs installed at /usr/lib64/firefox/langpacks cannot be used any more
• BZ - 2056363 - CVE-2022-25315 expat: Integer overflow in storeRawNames()
• BZ - 2056366 - CVE-2022-25235 expat: Malformed 2- and 3-byte UTF-8 sequences can lead to arbitrary code execution
• BZ - 2056370 - CVE-2022-25236 expat: Namespace-separator characters in "xmlns[:prefix]" attribute values can lead to arbitrary code execution
• BZ - 2061735 - CVE-2022-26486 Mozilla: Use-after-free in WebGPU IPC Framework
• BZ - 2061736 - CVE-2022-26485 Mozilla: Use-after-free in XSLT parameter processing
• BZ - 2062220 - CVE-2022-26383 Mozilla: Browser window spoof using fullscreen mode
• BZ - 2062221 - CVE-2022-26384 Mozilla: iframe allow-scripts sandbox bypass
• BZ - 2062222 - CVE-2022-26387 Mozilla: Time-of-check time-of-use bug when verifying add-on signatures
• BZ - 2062223 - CVE-2022-26381 Mozilla: Use-after-free in text reflows
• BZ - 2062224 - CVE-2022-26386 Mozilla: Temporary files downloaded to /tmp and accessible by other local users

CVEs

• CVE-2022-25235
• CVE-2022-25236
• CVE-2022-25315
• CVE-2022-26381
• CVE-2022-26383
• CVE-2022-26384
• CVE-2022-26386
• CVE-2022-26387
• CVE-2022-26485
• CVE-2022-26486

References

• https://access.redhat.com/security/updates/classification/#critical