Incorrect Type Conversion or Cast Affecting isync package, versions <1.4.2-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.04% (60th percentile)

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  • Snyk IDSNYK-ALPINE318-ISYNC-5515185
  • published16 Jun 2021
  • disclosed16 Feb 2022

Introduced: 16 Jun 2021

CVE-2021-3578  (opens in a new tab)
CWE-704  (opens in a new tab)

How to fix?

Upgrade Alpine:3.18 isync to version 1.4.2-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream isync package and not the isync package as distributed by Alpine. See How to fix? for Alpine:3.18 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1