PT-2020-13336 · Mit · Kerberos
Dan Shallom
·
Published
2020-05-16
·
Updated
2022-05-24
·
CVE-2020-13110
CVSS v3.1
7.8
High
| Vector | AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
Name of the Vulnerable Software and Affected Versions
kerberos versions prior to 1.0.0
Description
The issue allows arbitrary code execution and privilege escalation via injection of malicious DLLs through use of the kerberos sspi LoadLibrary() method, because of a DLL path search. This occurs because the package loads DLLs without specifying a full path, allowing attackers to create a file with the same name in a folder that precedes the intended file in the DLL path search, thus enabling them to execute arbitrary code on the machine.
Recommendations
Upgrade to version 1.0.0 or later. As a temporary workaround, consider restricting the use of the kerberos sspi LoadLibrary() method until a patch is available. Avoid using the LoadLibrary() method in the kerberos sspi module to minimize the risk of exploitation.
Exploit
Fix
Uncontrolled Search Path Element
Found an issue in the description? Have something to add? Feel free to write us 👾
Weakness Enumeration
Related Identifiers
Affected Products
Kerberos