vulnerability
Arch Linux: Directory traversal (CVE-2021-20247)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 6 | (AV:N/AC:M/Au:N/C:P/I:P/A:N) | Feb 23, 2021 | Jul 11, 2025 | Nov 27, 2025 |
Severity
6
CVSS
(AV:N/AC:M/Au:N/C:P/I:P/A:N)
Published
Feb 23, 2021
Added
Jul 11, 2025
Modified
Nov 27, 2025
Description
A security issue was found in isync/mbsync before versions 1.3.5 and 1.4.1. Validations of the mailbox names returned by IMAP LIST/LSUB do not occur, allowing a malicious or compromised server to use specially crafted mailbox names containing '..' path components to access data outside the designated mailbox on the opposite end of the synchronization channel.
Solution
arch-linux-upgrade-latest
References
- CVE-2021-20247
- https://attackerkb.com/topics/CVE-2021-20247
- URL-https://bugzilla.redhat.com/show_bug.cgi?id=1928963
- URL-https://lists.debian.org/debian-lts-announce/2022/07/msg00001.html
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CAXQLCK35QGRCRENRTGKJO4VVZGUXUJJ/
- URL-https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GVDEBZQJMWDW5JFK4NTHH6DAFNAZTESW/
- URL-https://security.archlinux.org/ASA-202102-38
- URL-https://security.gentoo.org/glsa/202208-15
- URL-https://www.openwall.com/lists/oss-security/2021/02/22/1
- CWE-20
- CWE-22
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