#VU79586 Access of Uninitialized Pointer in Kerberos 5 - CVE-2023-36054
Published: August 16, 2023
Vulnerability identifier: #VU79586
Vulnerability risk: Medium
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2023-36054
CWE-ID: CWE-824
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerable software:
Kerberos 5
Kerberos 5
Software vendor:
MIT
MIT
Description
The vulnerability allows a remote user to perform a denial of service (DoS) attack.
The vulnerability exists due to the _xdr_kadm5_principal_ent_rec() function in lib/kadm5/kadm_rpc_xdr.c does not validate the relationship between n_key_data and the key_data array count and frees an uninitialized pointer. A remote user can send a specially crafted request to the application and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.