CyberRota Analysis
AI-GeneratedSamba's Kerberos Key Distribution Center (KDC) password change service is vulnerable to an out-of-bounds read flaw that can be exploited by authenticated attackers through malformed ASN.1-encoded requests. While the primary impact is a denial of service due to potential crashes of the KDC process, the risk of decryption failures may also arise. Organizations using Samba should prioritize patching this vulnerability to mitigate the risk of service interruptions.
Original NVD Description
An out-of-bounds read flaw was found in Samba's Kerberos Key Distribution Center's (KDC) password change (kpasswd) service. When processing malformed ASN.1-encoded Kerberos password change request, Samba server miscalculates the structure size and attempts to read up to six bytes beyond the end of the allocated buffer. While this out-of-bounds read typically results in a harmless decryption failure, if the read hits unmapped memory, it causes the KDC process to crash. An authenticated attacker can send a specially crafted kpasswd request containing malformed ASN.1 data to trigger the out-of-bounds read, which may cause the KDC process to terminate, resulting in a denial of service.