Bug 2004461 (CVE-2021-3751) - CVE-2021-3751 libmobi: writes user controlled values out of the buffer which could result in RCE
Summary: CVE-2021-3751 libmobi: writes user controlled values out of the buffer which ...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-3751
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: 2004462
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-09-15 11:18 UTC by Michael Kaplan
Modified: 2021-09-15 12:21 UTC (History)
1 user (show)

Fixed In Version:
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Environment:
Last Closed: 2021-09-15 12:21:15 UTC


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Description Michael Kaplan 2021-09-15 11:18:05 UTC
This vulnerability is of writing user controlled values out of the buffer. The buffer is of MOBIBuffer type which is allocated using malloc. It is possible for the attacker to finally accomplish RCE (Remote Code Execution) using this out-of-bound write vulnerability to overwrite control-flow critical memory values.

References: 

https://huntr.dev/bounties/fcb4383c-bc27-4b89-bfce-6b041f0cb769
https://github.com/bfabiszewski/libmobi/commit/ab5bf0e37e540eac682a14e628853b918626e72b

Comment 1 Michael Kaplan 2021-09-15 11:18:22 UTC
Created libmobi tracking bugs for this issue:

Affects: fedora-all [bug 2004462]

Comment 2 Product Security DevOps Team 2021-09-15 12:21:15 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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