SB2022060505 - Multiple vulnerabilities in Red Hat Virtualization 4 for RHEL 8
Published: June 5, 2022 Updated: June 7, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 7 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) Use-after-free (CVE-ID: CVE-2021-4028)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error in the RDMA listen()
function in Linux kernel. A local user can run a specially crafted program to trigger a use-after-free error and execute arbitrary code with elevated privileges.
3) Use-after-free (CVE-ID: CVE-2021-4083)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the Linux kernel's garbage collection for Unix domain socket file handlers. A local user can call close() and fget() simultaneously and can potentially trigger a race condition, which in turn leads to a use-after-free error and allows privilege escalation.
4) Infinite loop (CVE-ID: CVE-2022-0778)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop within the BN_mod_sqrt() function when processing an ASN.1 certificate that contains elliptic curve public keys in compressed form or explicit elliptic curve parameters with a base point encoded in compressed form. A remote attacker can supply a specially crafted certificate to the TLS server or client, consume all available system resources and cause denial of service conditions.
5) 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.
6) 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.
7) Heap-based buffer overflow (CVE-ID: CVE-2022-25636)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in net/netfilter/nf_dup_netdev.c in the Linux kernel, related to nf_tables_offload. A local user can trigger a heap-based buffer overflow and execute arbitrary code with elevated privileges.
Remediation
Install update from vendor's website.