SB2023051676 - Red Hat Enterprise Linux 8 update for gssntlmssp
Published: May 16, 2023
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Out-of-bounds read (CVE-ID: CVE-2023-25563)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary condition when decoding NTLM fields. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds read error and perform a denial of service (DoS) attack.
2) Out-of-bounds write (CVE-ID: CVE-2023-25564)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a boundary in the ntlm_str_convert() function error when decoding UTF16 strings. A remote attacker can send specially crafted NTLM request to the application, trigger an out-of-bounds write error and perform a denial of service (DoS) attack.
3) Release of invalid pointer or reference (CVE-ID: CVE-2023-25565)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
4) Memory leak (CVE-ID: CVE-2023-25566)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak when parsing usernames. A remote attacker can force the application to leak memory and perform denial of service attack.
5) Out-of-bounds read (CVE-ID: CVE-2023-25567)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.