CVE-2021-3657

2022-02-1817:50:56

CWE-119

fedora

www.cve.org

mbsync

remote code execution

imap

buffer overflows

cve-2021-3657

AI Score

9.9

Confidence

High

EPSS

0.01

Percentile

83.5%

JSON

A flaw was found in mbsync versions prior to 1.4.4. Due to inadequate handling of extremely large (>=2GiB) IMAP literals, malicious or compromised IMAP servers, and hypothetically even external email senders, could cause several different buffer overflows, which could conceivably be exploited for remote code execution.

CNA Affected

[
  {
    "product": "isync",
    "vendor": "n/a",
    "versions": [
      {
        "status": "affected",
        "version": "isync 1.4.4"
      }
    ]
  }
]