Bug 2025686 (CVE-2021-39923, wnpa-sec-2021-11)

Summary: CVE-2021-39923 wireshark: PNRP dissector large loop
Product: [Other] Security Response Reporter: Guilherme de Almeida Suckevicz <gsuckevi>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: medium Docs Contact:
Priority: medium    
Version: unspecifiedCC: alekcejk, denis, huzaifas, lemenkov, mruprich, peter, rvokal, sergey.avseyev
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: wireshark 3.4.10 Doc Type: If docs needed, set a value
Doc Text:
A flaw was found in Wireshark. A process failure consumes excessive CPU resources on crafted or malformed PNRP input and can cause a denial of service.
 Story Points: ---
Clone Of: Environment:
Last Closed: 2022-04-18 02:10:08 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2025687, 2030035    
Bug Blocks: 2025696    

Description Guilherme de Almeida Suckevicz 2021-11-22 18:15:15 UTC 
The PNRP dissector could go into a large loop. It may be possible to make Wireshark consume excessive CPU resources by injecting a malformed packet onto the wire or by convincing someone to read a malformed packet trace file.

Reference:
https://www.wireshark.org/security/wnpa-sec-2021-11.html
Comment 1 Guilherme de Almeida Suckevicz 2021-11-22 18:15:40 UTC 
Created wireshark tracking bugs for this issue:

Affects: fedora-all [bug 2025687]
Comment 11 Product Security DevOps Team 2022-04-18 02:10:06 UTC 
This bug is now closed. Further updates for individual products will be reflected on the CVE page(s):

https://access.redhat.com/security/cve/cve-2021-39923