CVEvulnerability
CVE-2021-44143
9.8 CRITICAL
Official page ↗
- Status
- Modified
- Published
- 2021-11-22
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 9.8 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CVSS 2.0 ([email protected])
- 7.5 HIGH — AV:N/AC:L/Au:N/C:P/I:P/A:P
- Weaknesses
- CWE-787
Description
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 overflow, which could conceivably be exploited for remote code execution.
Affected configurations
• isync project isync (>= 1.4.0 <= 1.4.3)
• debian debian linux 9.0
• debian debian linux 10.0
• debian debian linux 11.0
• fedoraproject fedora 34
• fedoraproject fedora 35
Related
Weakness · CWE (1)
- CWE-787 Out-of-bounds Write weakness
References
- http://www.openwall.com/lists/oss-security/2021/12/03/2 Mailing List
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=999804 Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CYZ2GNB4ZO2T27D2XNUWMCS3THZYSJQU/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCBSY7OZ57XNC6ZYXF6WU5KBSWITZVDX/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202208-15 Third Party Advisory
- https://sourceforge.net/p/isync/isync/commit_browser Patch, Third Party Advisory
- https://sourceforge.net/p/isync/isync/ref/master/tags/ Third Party Advisory
- http://www.openwall.com/lists/oss-security/2021/12/03/2 Mailing List
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=999804 Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CYZ2GNB4ZO2T27D2XNUWMCS3THZYSJQU/ lists.fedoraproject.org
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LCBSY7OZ57XNC6ZYXF6WU5KBSWITZVDX/ lists.fedoraproject.org
- https://security.gentoo.org/glsa/202208-15 Third Party Advisory
- https://sourceforge.net/p/isync/isync/commit_browser Patch, Third Party Advisory
- https://sourceforge.net/p/isync/isync/ref/master/tags/ Third Party Advisory