Buffer overflow in Isync_project Isync
CVE-2021-44143
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…
Vulnerability class: Buffer Overflow
EPSS: 0.037 (88.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Isync_project Isync
- Debian Debian_linux — versions 9.0, 10.0, 11.0
- Fedoraproject Fedora — versions 34, 35
- N/a — versions n/a
Weakness classification (CWE)
References
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (Patch, Third Party Advisory, x_refsource_MISC)
- cve@mitre.org (mailing-list, x_refsource_MLIST, Mailing List)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (x_refsource_FEDORA, vendor-advisory)
- cve@mitre.org (vendor-advisory, Third Party Advisory, x_refsource_GENTOO)
Frequently asked questions
- What is CVE-2021-44143?
- CVE-2021-44143 is a critical-severity vulnerability in Isync_project Isync, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2021-11-22.
- How severe is CVE-2021-44143?
- Critical severity. CVSS v3 base score is 9.8 out of 10.