SB2022070633 - Red Hat Virtualization 4 for Red Hat Enterprise Linux 7 update for redhat-release-virtualization-host and redhat-virtualization-host
Published: July 6, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2018-25032)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to insufficient validation of user-supplied input when compressing data. A remote attacker can pass specially crafted input to the application, trigger memory corruption and perform a denial of service (DoS) attack.
2) Input validation error (CVE-ID: CVE-2022-1271)
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient validation when processing filenames with two or more newlines. A remote attacker can force zgrep or xzgrep to write arbitrary files on the system.
Successful exploitation of the vulnerability may allow an attacker to compromise the affected system.
3) Use-after-free (CVE-ID: CVE-2022-1966)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the Linux kernel's Netfilter subsystem in net/netfilter/nf_tables_api.c. A local user can trigger use-after-free error to escalate privileges on the system.
4) Heap-based buffer overflow (CVE-ID: CVE-2022-24903)
The vulnerability allows a remote attacker to perform a denial of service or potentially execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when parsing data in imtcp, imptcp, imgssapi, and imhttp modules used for TCP syslog reception. A remote attacker can pass specially crafted data to the application, trigger heap-based buffer overflow and cause a denial of service or potentially execute arbitrary code on the target system.
Successful exploitation of this vulnerability is possible if the attacker is able to directly send specially crafted messages to the rsyslog daemon or by injecting specially crafted data into log files. Vulnerability exploitation in the second scenario requires that the rsyslog client supports octet-counted framing, which is not a default configuration.
Remediation
Install update from vendor's website.