Bug 1926967 (CVE-2021-3403) - CVE-2021-3403 ytnef: double free in TNEFSubjectHandler function in lib/ytnef.c via crafted file
Summary: CVE-2021-3403 ytnef: double free in TNEFSubjectHandler function in lib/ytnef....
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-3403
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: 1926968 1926970
Blocks: 1926973
TreeView+ depends on / blocked
 
Reported: 2021-02-09 18:44 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-03-03 19:16 UTC (History)
2 users (show)

Fixed In Version:
Clone Of:
Environment:
Last Closed: 2021-02-09 22:09:54 UTC
Embargoed:

Attachments (Terms of Use)

Description Guilherme de Almeida Suckevicz 2021-02-09 18:44:58 UTC 
In ytnef 1.9.3, the TNEFSubjectHandler function in lib/ytnef.c allows remote attackers to cause a denial-of-service (and potentially code execution) due to a double free which can be triggered via a crafted file.

Reference:
https://github.com/Yeraze/ytnef/issues/85
Comment 1 Guilherme de Almeida Suckevicz 2021-02-09 18:45:17 UTC 
Created ytnef tracking bugs for this issue:

Affects: epel-7 [bug 1926970]
Affects: fedora-all [bug 1926968]
Comment 2 Product Security DevOps Team 2021-02-09 22:09:54 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.
Comment 3 Guilherme de Almeida Suckevicz 2021-03-03 19:16:29 UTC 
External References:

https://github.com/Yeraze/ytnef/issues/85
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