CVE-2012-4463: Input Validation
First published: Wed Oct 03 2012(Updated: )
A security flaw was found in the way Midnight Commander, a user-friendly text console file manager and visual shell, performed sanitization of MC_EXT_SELECTED environment variable when multiple files were selected (first selected file was used as actual content of the MC_EXT_SELECTED variable, while the remaining files were provided as arguments to the temporary script, handling the F3 / Enter key press event). A remote attacker could provide a specially-crafted archive that, when expanded and previewed by the victim could lead to arbitrary code execution with the privileges of the user running mc executable. References: [1] <a href="https://bugs.gentoo.org/show_bug.cgi?id=436518">https://bugs.gentoo.org/show_bug.cgi?id=436518</a> Upstream ticket: [2] <a href="https://www.midnight-commander.org/ticket/2913">https://www.midnight-commander.org/ticket/2913</a>
Credit: secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Jason Alexander phNNTP | =4.8.5 |
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Reference Links
- https://bugs.gentoo.org/show_bug.cgi?id=436518
- https://www.midnight-commander.org/ticket/2913
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=862814
- http://www.openwall.com/lists/oss-security/2012/10/03/4
- https://access.redhat.com/security/cve/CVE-2012-4463
- http://www.openwall.com/lists/oss-security/2012/10/03/5
- https://bugzilla.redhat.com/show_bug.cgi?id=862813
- http://www.securityfocus.com/bid/55777
- https://bugs.gentoo.org/show_bug.cgi?id=436518#c7
- https://exchange.xforce.ibmcloud.com/vulnerabilities/79033
Frequently Asked Questions
What is the severity of CVE-2012-4463?
CVE-2012-4463 is considered a moderate severity vulnerability.
How does CVE-2012-4463 affect Midnight Commander?
CVE-2012-4463 affects Midnight Commander by allowing the MC_EXT_SELECTED environment variable to be improperly sanitized, which can lead to potential execution of unintended commands.
How do I fix CVE-2012-4463?
To fix CVE-2012-4463, update Midnight Commander to version 4.8.6 or later, which addresses the vulnerability.
Is CVE-2012-4463 exploitable remotely?
CVE-2012-4463 is not typically considered remotely exploitable, as it requires local access to the system running Midnight Commander.
What versions of Midnight Commander are affected by CVE-2012-4463?
CVE-2012-4463 specifically affects Midnight Commander version 4.8.5.
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