CVE-2016-6253
First published: Fri Jan 20 2017(Updated: )
mail.local in NetBSD versions 6.0 through 6.0.6, 6.1 through 6.1.5, and 7.0 allows local users to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.
Credit: cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| NetBSD NetBSD | =6.0 | |
| NetBSD NetBSD | =6.0.1 | |
| NetBSD NetBSD | =6.0.2 | |
| NetBSD NetBSD | =6.0.3 | |
| NetBSD NetBSD | =6.0.4 | |
| NetBSD NetBSD | =6.0.5 | |
| NetBSD NetBSD | =6.0.6 | |
| NetBSD NetBSD | =6.1 | |
| NetBSD NetBSD | =6.1.1 | |
| NetBSD NetBSD | =6.1.2 | |
| NetBSD NetBSD | =6.1.3 | |
| NetBSD NetBSD | =6.1.4 | |
| NetBSD NetBSD | =6.1.5 | |
| NetBSD NetBSD | =7.0 |
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Reference Links
- http://akat1.pl/?id=2
- http://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2016-006.txt.asc
- http://packetstormsecurity.com/files/138021/NetBSD-mail.local-8-Local-Root.html
- http://www.rapid7.com/db/modules/exploit/unix/local/netbsd_mail_local
- http://www.securityfocus.com/bid/92101
- http://www.securitytracker.com/id/1036429
- https://www.exploit-db.com/exploits/40141/
- https://www.exploit-db.com/exploits/40385/
Frequently Asked Questions
What is the severity of CVE-2016-6253?
CVE-2016-6253 has been assigned a moderate severity level due to potential unauthorized file access and manipulation.
How do I fix CVE-2016-6253?
To fix CVE-2016-6253, upgrade to a patched version of NetBSD that resolves the symlink vulnerability.
Who is affected by CVE-2016-6253?
CVE-2016-6253 affects local users of NetBSD versions 6.0 through 7.0.
What type of attack does CVE-2016-6253 exploit?
CVE-2016-6253 exploits a symlink attack that allows local users to change file ownership or data.
Is there a workaround for CVE-2016-6253?
A temporary workaround for CVE-2016-6253 may involve adjusting file permissions to limit access until a patch can be applied.
- agent/references
- agent/type
- collector/nvd-index
- agent/software-canonical-lookup-request
- agent/weakness
- agent/author
- agent/severity
- agent/description
- agent/softwarecombine
- collector/mitre-cve
- source/MITRE
- agent/last-modified-date
- agent/tags
- agent/event
- agent/first-publish-date
- agent/source
- vendor/netbsd
- canonical/netbsd netbsd
- version/netbsd netbsd/6.0
- version/netbsd netbsd/6.0.1
- version/netbsd netbsd/6.0.2
- version/netbsd netbsd/6.0.3
- version/netbsd netbsd/6.0.4
- version/netbsd netbsd/6.0.5
- version/netbsd netbsd/6.0.6
- version/netbsd netbsd/6.1
- version/netbsd netbsd/6.1.1
- version/netbsd netbsd/6.1.2
- version/netbsd netbsd/6.1.3
- version/netbsd netbsd/6.1.4
- version/netbsd netbsd/6.1.5
- version/netbsd netbsd/7.0