isync: A flaw was found in mbsync in isync 1.4.0 through 1.4.3
CVE-2021-44143 is fixed in isync on 1 platform, first by DEBIAN-CVE-2021-44143, released November 22, 2021. It is not reported as exploited. Patch Radar priority: Urgent.
A flaw was found in mbsync in isync 1.4.0 through 1.4.3. Due to an unchecked condition, a malicious or compromised IMAP server could use a crafted mail message that lacks headers (i.e., one that starts with an empty line) to provoke a heap overflow, which could conceivably be exploited for remote code execution.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| isync · Debian 12.15 (bookworm) | 1.4.4-1 | DEBIAN-CVE-2021-44143 | Nov 22, 2021 |
| isync · Debian 13.5 (trixie) | 1.4.4-1 | DEBIAN-CVE-2021-44143 | Nov 22, 2021 |
| isync · Debian 14 | 1.4.4-1 | DEBIAN-CVE-2021-44143 | Nov 22, 2021 |
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