Bug 2025631 (CVE-2021-21900) - CVE-2021-21900 librecad: use-after-free in dxfRW:processLType()
Summary: CVE-2021-21900 librecad: use-after-free in dxfRW:processLType()
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-21900
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2025632 2025633
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-11-22 16:07 UTC by Michael Kaplan
Modified: 2021-12-01 09:10 UTC (History)
3 users (show)

Fixed In Version:
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Last Closed: 2021-11-22 16:19:53 UTC
Embargoed:

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Description Michael Kaplan 2021-11-22 16:07:47 UTC 
A code execution vulnerability exists in the dxfRW::processLType() functionality of LibreCad libdxfrw 2.2.0-rc2-19-ge02f3580. A specially-crafted .dxf file can lead to a use-after-free vulnerability. An attacker can provide a malicious file to trigger this vulnerability.

References:

https://talosintelligence.com/vulnerability_reports/TALOS-2021-1351
Comment 1 Michael Kaplan 2021-11-22 16:08:06 UTC 
Created librecad tracking bugs for this issue:

Affects: epel-7 [bug 2025632]
Affects: fedora-all [bug 2025633]
Comment 2 Product Security DevOps Team 2021-11-22 16:19:52 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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