Bug 2148991 (CVE-2022-4141)

Summary: CVE-2022-4141 vim: invalid memory access in substitute with function
Product: [Other] Security Response Reporter: TEJ RATHI <trathi>
Component: vulnerabilityAssignee: Nobody <nobody>
Status: NEW --- QA Contact:
Severity: low Docs Contact:
Priority: low    
Version: unspecifiedCC: zdohnal
Target Milestone: ---Keywords: Security
Target Release: ---   
Hardware: All   
OS: Linux   
Whiteboard:
Fixed In Version: vim 9.0.0947 Doc Type: If docs needed, set a value
Doc Text:
A heap-based buffer overflow vulnerability was found in Vim due to invalid memory access. This issue could allow an attacker to trick a user into opening a specially crafted file, triggering an out-of-bounds write that causes an application to crash, possibly executing code and corrupting memory.
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Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2148992, 2156265    
Bug Blocks: 2148821    

Description TEJ RATHI 2022-11-28 12:48:20 UTC 
The target's backtrace indicates that libc has detected a heap error or that the target was executing a heap function when it stopped. This could be due to heap corruption, passing a bad pointer to a heap function such as free(), etc. Since heap errors might include buffer overflows, use-after-free situations, etc. they are generally considered exploitable.

https://huntr.dev/bounties/20ece512-c600-45ac-8a84-d0931e05541f
https://github.com/vim/vim/commit/cc762a48d42b579fb7bdec2c614636b830342dd5
Comment 1 TEJ RATHI 2022-11-28 12:50:00 UTC 
Created vim tracking bugs for this issue:

Affects: fedora-all [bug 2148992]