CVE catalog
CVE-2021-3578
isync: CVE-2021-3578
- Severity
- High · CVSS 7.8
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - Published
- Source
- [NVD] · [CVE record]
- EPSS
- 1.04% · Oct 25, 2026
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.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | isync | sid | 1.5.1-2 | fixed |
| Debian | isync | forky | 1.5.1-2 | fixed |
| Debian | isync | trixie | 1.5.1-1 | fixed |
| Debian | isync | bookworm | 1.4.4-5 | fixed |
| Suse | isync | package hub 15 sp2 | 1.3.6-bp152.4.6.1 | fixed |
| Opensuse | isync | leap 15.2 | 1.3.6-lp152.4.6.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | isync | source | sid | 1.3.0-2.2 | not yet assigned | Not reported | [989564] |
| Debian | isync | source | forky | 1.3.0-2.2 | not yet assigned | Not reported | [989564] |
| Debian | isync | source | trixie | 1.3.0-2.2 | not yet assigned | Not reported | [989564] |
| Debian | isync | source | bookworm | 1.3.0-2.2 | not yet assigned | Not reported | [989564] |
| Suse | isync | rpm | package hub 15 sp2 | 1.3.6-bp152.4.6.1 | Not reported | OPENSUSE-SU-2021:1185-1 | Not reported |
| Opensuse | isync | rpm | leap 15.2 | 1.3.6-lp152.4.6.1 | Not reported | OPENSUSE-SU-2021:1170-1 | Not reported |
OpenFactory catalog packages
[Debian 12 (Bookworm)]
- [isync]Fixed
Details (2)
1.4.4-5· amd64 · bookwormFixed · Fixed:
1.3.0-2.2dsa · isync · debian · bookworm; dsa · isync · debian · 12
1.4.4-5· arm64 · bookwormFixed · Fixed:
1.3.0-2.2dsa · isync · debian · bookworm; dsa · isync · debian · 12
[Debian 13 (Trixie)]
- [isync]Fixed
Details (2)
1.5.1-1· amd64 · trixieFixed · Fixed:
1.3.0-2.2dsa · isync · debian · 13
1.5.1-1· arm64 · trixieFixed · Fixed:
1.3.0-2.2dsa · isync · debian · 13
Observed:
References
- [https://ftp.suse.com/pub/projects/security/csaf/opensuse-su-2021_1170-1.json]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2021-3578]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:1170-1]
- [https://osv.dev/vulnerability/openSUSE-SU-2021:1185-1]
- [https://security-tracker.debian.org/tracker/CVE-2021-3578]
[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database] · [SUSE security advisories and VEX]