SB2024080726 - Fedora 40 update for krb5
Published: August 7, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 5 secuirty vulnerabilities.
1) Memory leak (CVE-ID: CVE-2024-26458)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to memory leak in /krb5/src/lib/rpc/pmap_rmt.c. A remote attacker can perform a denial of service attack.
2) Memory leak (CVE-ID: CVE-2024-26461)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in /krb5/src/lib/gssapi/krb5/k5sealv3.c. A remote attacker can force the application to leak memory and perform denial of service attack.
3) Memory leak (CVE-ID: CVE-2024-26462)
The vulnerability allows a remote attacker to perform DoS attack on the target system.
The vulnerability exists due memory leak in /krb5/src/kdc/ndr.c. A remote attacker can force the application to leak memory and perform denial of service attack.
4) Input validation error (CVE-ID: CVE-2024-37370)
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can modify the plaintext Extra Count field of a confidential GSS krb5 wrap token, causing the unwrapped token to appear truncated to the application.
5) Out-of-bounds read (CVE-ID: CVE-2024-37371)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when handling GSS message token. A remote attacker can send specially crafted token to the application, trigger an out-of-bounds read error and read contents of memory on the system.
Remediation
Install update from vendor's website.