SB2024092426 - Red Hat Enterprise Linux 8 update for the virt:rhel and virt-devel:rhel module
Published: September 24, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 3 vulnerabilities.
1) Double free (CVE-ID: CVE-2024-3446)
CWE-ID: CWE-415 - Double Free
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a malicious guest to escalate privileges on the system.
The vulnerability exists due to a boundary error in QEMU virtio devices (virtio-gpu, virtio-serial-bus, virtio-crypto), where the mem_reentrancy_guard flag insufficiently protects against DMA reentrancy issues. A malicious guest can trigger a double free error and execute arbitrary code within the context of the QEMU process on the host.
2) Improper synchronization (CVE-ID: CVE-2024-7409)
CWE-ID: CWE-662 - Improper Synchronization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a malicious guest to perform a denial of service (DoS) attack.
The vulnerability exists due to improper synchronization during socket closure in the QEMU NBD Server. A malicious guest can perform a denial of service (DoS) attack.
3) Improper Certificate Validation (CVE-ID: CVE-2024-7383)
CWE-ID: CWE-295 - Improper Certificate Validation
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to perform MitM attack.
The vulnerability exist due to improper certificate validation when handling the NBD server's certificate. A remote attacker can perform MitM attack.
Remediation
Install update from vendor's website.