Netbsd · Netbsd · CVE-2016-6253
**Name of the Vulnerable Software and Affected Versions**
NetBSD versions 6.0 through 6.0.6
NetBSD versions 6.1 through 6.1.5
NetBSD versions 7.0
**Description**
The issue is related to an incorrect link resolution before file access in the mail.local service of the NetBSD operating system. This can be exploited by a local attacker to bypass protection and manipulate symbolic links, potentially allowing them to change ownership of or append data to arbitrary files on the target system via a symlink attack on the user mailbox.
**Recommendations**
For NetBSD versions 6.0 through 6.0.6, consider restricting access to the mail.local service until a patch is available.
For NetBSD versions 6.1 through 6.1.5, avoid using the mail.local service for sensitive operations until the issue is resolved.
For NetBSD versions 7.0, as a temporary workaround, consider disabling the mail.local service to minimize the risk of exploitation.