RHSA-2022:0818 - Security Advisory

Topic

An update for firefox is now available for Red Hat Enterprise Linux 8.

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.

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 for x86_64 8 x86_64
• Red Hat Enterprise Linux for x86_64 - Extended Update Support 8.6 x86_64
• Red Hat Enterprise Linux Server - AUS 8.6 x86_64
• Red Hat Enterprise Linux for IBM z Systems 8 s390x
• Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 8.6 s390x
• Red Hat Enterprise Linux for Power, little endian 8 ppc64le
• Red Hat Enterprise Linux for Power, little endian - Extended Update Support 8.6 ppc64le
• Red Hat Enterprise Linux Server - TUS 8.6 x86_64
• Red Hat Enterprise Linux for ARM 64 8 aarch64
• Red Hat Enterprise Linux for ARM 64 - Extended Update Support 8.6 aarch64
• Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
• Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64

Fixes

• 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