isync: A flaw was found in mbsync before v1.3.6 and v1.4.2, where an unchecked pointer cast allows a malicious or compromise...
CVE-2021-3578 is fixed in isync on 1 platform, first by DEBIAN-CVE-2021-3578, released February 16, 2022. It is not reported as exploited. Patch Radar priority: High.
A flaw was found in mbsync before v1.3.6 and v1.4.2, where an unchecked pointer cast allows a malicious or compromised server to write an arbitrary integer value past the end of a heap-allocated structure by issuing an unexpected APPENDUID response. This could be plausibly exploited for remote code execution on the client.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| isync · Debian 12.15 (bookworm) | 1.3.0-2.2 | DEBIAN-CVE-2021-3578 | Feb 16, 2022 |
| isync · Debian 13.5 (trixie) | 1.3.0-2.2 | DEBIAN-CVE-2021-3578 | Feb 16, 2022 |
| isync · Debian 14 | 1.3.0-2.2 | DEBIAN-CVE-2021-3578 | Feb 16, 2022 |
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