Signatures are written to disk before and read during verification, which might be subject to a race condition when a malicious local process or user is replacing the file. This vulnerability affects Thunderbird < 78.10.
openSUSE Leap 15.2 openSUSE Leap 15.3 openSUSE Leap 15.3 SLE Imports openSUSE Leap 15.4 openSUSE Tumbleweed SUSE Linux Enterprise Desktop 15 SP2 SUSE Linux Enterprise Desktop 15 SP4 SUSE Linux Enterprise High Performance Computing 12 SP5 SUSE Linux Enterprise Server 15 SP2 SUSE Linux Enterprise Server 15 SP4 SUSE Linux Enterprise Server for SAP Applications 15 SP2 SUSE Linux Enterprise Server for SAP Applications 15 SP4 SUSE Linux Enterprise Workstation Extension 15 SP2 SUSE Linux Enterprise Workstation Extension 15 SP4