CVE-2021-3578
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
Description
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-3578
Vendor advisory: arch — https://security.archlinux.org/ASA-202106-27
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 1.4.2-1 | |
| debian | bookworm | fixed | 1.3.0-2.2 |
| debian | bullseye | fixed | 1.3.0-2.2 |
| debian | forky | fixed | 1.3.0-2.2 |
| debian | sid | fixed | 1.3.0-2.2 |
| debian | trixie | fixed | 1.3.0-2.2 |
References
Verify integrity in audit chain (admin only). AS-IS.