Directory traversal vulnerability in admin/skins.php for @lex Guestbook 4.0.2 and earlier allows remote attackers to create files in arbitrary directories via ".." sequences in the (1) aj_skin and (2) skin_edit parameters. NOTE: this can be leveraged for file inclusion by creating a skin file in the lang directory, then referencing that file via the lang parameter to index.php, which passes a sanity check in livre_include.php.
Vector
NETWORK
Complexity
LOW
Authentication
NONE
Confidentiality
PARTIAL
Integrity
PARTIAL
Availability
PARTIAL
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') (ID 22)
Related CAPEC 7
Relative Path Traversal (CAPEC-ID 139)
Directory Traversal (CAPEC-ID 213)
File System Function Injection, Content Based (CAPEC-ID 23)
Using Slashes and URL Encoding Combined to Bypass Validation Logic (CAPEC-ID 64)
Manipulating Input to File System Calls (CAPEC-ID 76)
Using Escaped Slashes in Alternate Encoding (CAPEC-ID 78)
Using Slashes in Alternate Encoding (CAPEC-ID 79)