Hardlink before 0.1.2 has multiple integer overflows leading to heap-based buffer overflows because of the way string lengths concatenation is done in the calculation of the required memory space to be used. A remote attacker could provide a specially-crafted directory tree and trick the local user into consolidating it, leading to hardlink executable crash or potentially arbitrary code execution with user privileges.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://security-tracker.debian.org/tracker/CVE-2011-3631 | third party advisory |
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2011-3631 | issue tracking third party advisory |
| https://access.redhat.com/security/cve/cve-2011-3631 | third party advisory |
| https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=645516 | issue tracking third party advisory |