Bug 2033018 (CVE-2021-44847) - CVE-2021-44847 toxcore: stack-based buffer overflow in handle_request() in DHT.c
Summary: CVE-2021-44847 toxcore: stack-based buffer overflow in handle_request() in DHT.c
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-44847
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: 2033019
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-12-15 17:44 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-12-15 18:26 UTC (History)
1 user (show)

Fixed In Version:
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Last Closed: 2021-12-15 18:26:03 UTC
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Description Guilherme de Almeida Suckevicz 2021-12-15 17:44:11 UTC 
A stack-based buffer overflow in handle_request function in DHT.c in toxcore 0.1.9 through 0.1.11 and 0.2.0 through 0.2.12 (caused by an improper length calculation during the handling of received network packets) allows remote attackers to crash the process or potentially execute arbitrary code via a network packet.

Reference:
https://blog.tox.chat/2021/12/stack-based-buffer-overflow-vulnerability-in-udp-packet-handling-in-toxcore-cve-2021-44847/

Upstream patch:
https://github.com/TokTok/c-toxcore/pull/1718
Comment 1 Guilherme de Almeida Suckevicz 2021-12-15 17:44:23 UTC 
Created toxcore tracking bugs for this issue:

Affects: fedora-all [bug 2033019]
Comment 2 Product Security DevOps Team 2021-12-15 18:26:01 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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