Linux Security
Linux Security
Linux Security

ArchLinux: 202102-38: isync: directory traversal

Date 01 Mar 2021
199
Posted By LinuxSecurity Advisories
The package isync before version 1.3.5-1 is vulnerable to directory traversal.
Arch Linux Security Advisory ASA-202102-38
==========================================

Severity: High
Date    : 2021-02-27
CVE-ID  : CVE-2021-20247
Package : isync
Type    : directory traversal
Remote  : Yes
Link    : https://security.archlinux.org/AVG-1598

Summary
=======

The package isync before version 1.3.5-1 is vulnerable to directory
traversal.

Resolution
==========

Upgrade to 1.3.5-1.

# pacman -Syu "isync>=1.3.5-1"

The problem has been fixed upstream in version 1.3.5.

Workaround
==========

None.

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.

Impact
======

A compromised server could traverse files on the system.

References
==========

https://www.openwall.com/lists/oss-security/2021/02/22/1
https://sourceforge.net/p/isync/isync/ci/fe5d59f8e3169944e57eb1c60155c9ebd4912d48/
https://security.archlinux.org/CVE-2021-20247

Advisories

LinuxSecurity Poll

How frequently do you patch/update your system?

No answer selected. Please try again.
Please select either existing option or enter your own, however not both.
Please select minimum 0 answer(s) and maximum 3 answer(s).
/main-polls/52-how-frequently-do-you-patch-update-your-system?task=poll.vote&format=json
52
radio
[{"id":"179","title":"As soon as patches\/updates are released - I track advisories for my distro(s) diligently","votes":"42","type":"x","order":"1","pct":84,"resources":[]},{"id":"180","title":"Every so often, when I think of it","votes":"4","type":"x","order":"2","pct":8,"resources":[]},{"id":"181","title":"Hardly ever","votes":"4","type":"x","order":"3","pct":8,"resources":[]}] ["#ff5b00","#4ac0f2","#b80028","#eef66c","#60bb22","#b96a9a","#62c2cc"] ["rgba(255,91,0,0.7)","rgba(74,192,242,0.7)","rgba(184,0,40,0.7)","rgba(238,246,108,0.7)","rgba(96,187,34,0.7)","rgba(185,106,154,0.7)","rgba(98,194,204,0.7)"] 350

Please vote first in order to view vote results.

VOTE ON THE POLL PAGE


VIEW MORE POLLS

bottom 200

Please enable / Bitte aktiviere JavaScript!
Veuillez activer / Por favor activa el Javascript![ ? ]

We use cookies to provide and improve our services. By using our site, you consent to our Cookie Policy.