Bug 2027172 (CVE-2021-44143) - CVE-2021-44143 isync: specially crafted mail message may cause heap overflow
Summary: CVE-2021-44143 isync: specially crafted mail message may cause heap overflow
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-44143
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2027173 2027174
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-11-29 04:08 UTC by Marian Rehak
Modified: 2021-11-29 04:38 UTC (History)
2 users (show)

Fixed In Version:
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Last Closed: 2021-11-29 04:38:48 UTC
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Description Marian Rehak 2021-11-29 04:08:19 UTC 
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.

Reference:

https://sourceforge.net/p/isync/isync/commit_browser
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=999804
https://sourceforge.net/p/isync/isync/ref/master/tags/
Comment 1 Marian Rehak 2021-11-29 04:08:34 UTC 
Created isync tracking bugs for this issue:

Affects: epel-all [bug 2027174]
Affects: fedora-all [bug 2027173]
Comment 2 Product Security DevOps Team 2021-11-29 04:38:46 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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