SB2021062228 - Multiple vulnerabilities in Red Hat Virtualization
Published: June 22, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 secuirty vulnerabilities.
1) Incomplete cleanup (CVE-ID: CVE-2020-24489)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incomplete cleanup, which leads to security restrictions bypass and privilege escalation.
2) Input validation error (CVE-ID: CVE-2021-25217)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack or gain access to sensitive information.
The vulnerability exists due to insufficient validation of options data stored in DHCP leases. A remote attacker can pass specially crafted input to the application and perform a denial of service (DoS) attack or gain access to sensitive information.
Both dhcpd and dhclient are affected by the vulnerability.
3) Integer overflow (CVE-ID: CVE-2021-27219)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within the g_bytes_new() function on 64-bit platforms due to an implicit cast from 64 bits to 32 bits. A local user can run a specially crafted program to trigger an integer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.