CVE-2021-20247

Name
CVE-2021-20247
Description
A flaw was found in mbsync before v1.3.5 and v1.4.1. 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. The highest threat from this vulnerability is to data confidentiality and integrity.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
Issue Tracking https://bugzilla.redhat.com/show_bug.cgi?id=1928963
Exploit https://www.openwall.com/lists/oss-security/2021/02/22/1
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CAXQLCK35QGRCRENRTGKJO4VVZGUXUJJ/
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/GVDEBZQJMWDW5JFK4NTHH6DAFNAZTESW/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:mbsync_project:mbsync:*:*:*:*:*:*:*:* mbsync >= None < 1.3.5
cpe:2.3:a:mbsync_project:mbsync:*:*:*:*:*:*:*:* mbsync >= 1.4.0 < 1.4.1

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
isync edge-community 1.4.1-r0 Stuart Cardall <developer@it-offshore.co.uk> fixed
isync 3.22-community 1.4.1-r0 None fixed
isync 3.21-community 1.4.1-r0 None fixed
isync 3.20-community 1.4.1-r0 None fixed
isync 3.19-community 1.4.1-r0 None fixed
isync 3.18-community 1.4.1-r0 None fixed
isync 3.17-community 1.4.1-r0 None fixed