Bug 2139911 (CVE-2022-43995)

Summary: CVE-2022-43995 sudo: heap-based overflow with very small passwords
Product: [Other] Security Response Reporter: Marco Benatto <mbenatto>
Component: vulnerabilityAssignee: Red Hat Product Security <security-response-team>
Status: CLOSED NOTABUG QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedCC: awilliam, bishop, dapospis, rsroka
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
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Last Closed: 2022-11-04 20:45:25 UTC Type: ---
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oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On:    
Bug Blocks: 2139600    

Description Marco Benatto 2022-11-03 19:33:12 UTC
Sudo 1.8.0 through 1.9.12, with the crypt() password backend, contains a plugins/sudoers/auth/passwd.c array-out-of-bounds error that can result in a heap-based buffer over-read. This can be triggered by arbitrary local users with access to Sudo by entering a password of seven characters or fewer. The impact could vary depending on the compiler and processor architecture.

Comment 4 Marco Benatto 2022-11-04 20:44:10 UTC
Created sudo tracking bugs for this issue:

Affects: fedora-all [bug 2140224]