Bug 2241528 (CVE-2023-42116)

Summary: CVE-2023-42116 Exim: SMTP Challenge Stack-based Buffer Overflow Remote Code Execution Vulnerability
Product: [Other] Security Response Reporter: Nick Tait <ntait>
Component: vulnerabilityAssignee: Product Security <prodsec-ir-bot>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
Target Milestone: ---   
Target Release: ---   
Hardware: All   
OS: Linux   
Fixed In Version: Doc Type: If docs needed, set a value
Doc Text:
The vulnerability was found in Exim within the handling of NTLM challenge requests. The issue results from the lack of proper validation of the length of user-supplied data prior to copying it to a fixed-length stack-based buffer. An attacker can leverage this vulnerability to execute code in the context of the service account. Authentication is not required to exploit this vulnerability.
Story Points: ---
Clone Of: Environment:
Last Closed: Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Bug Depends On: 2241529, 2241530    
Bug Blocks: 2241518    

Comment 1 Nick Tait 2023-09-30 17:43:35 UTC
Created exim tracking bugs for this issue:

Affects: epel-all [bug 2241530]
Affects: fedora-all [bug 2241529]