RHSA-2021:1350 — Security Advisory

An update for thunderbird 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 Thunderbird is a standalone mail and newsgroup client.

This update upgrades Thunderbird to version 78.10.0.

Security Fix(es):

• Mozilla: Out of bound write due to lazy initialization (CVE-2021-23994)

• Mozilla: Use-after-free in Responsive Design Mode (CVE-2021-23995)

• Mozilla: More internal network hosts could have been probed by a malicious webpage (CVE-2021-23961)

• Mozilla: Secure Lock icon could have been spoofed (CVE-2021-23998)

• Mozilla: Blob URLs may have been granted additional privileges (CVE-2021-23999)

• Mozilla: Arbitrary FTP command execution on FTP servers using an encoded URL (CVE-2021-24002)

• Mozilla: Incorrect size computation in WebAssembly JIT could lead to null-reads (CVE-2021-29945)

• Mozilla: Port blocking could be bypassed (CVE-2021-29946)

• Mozilla: Race condition when reading from disk while verifying signatures (CVE-2021-29948)

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.