SB20240806294 - Amazon Linux AMI update for kernel
Published: August 6, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 9 secuirty vulnerabilities.
1) Spoofing attack (CVE-ID: CVE-2023-52881)
The vulnerability allows a remote attacker to perform spoofing attack.
The vulnerability exists due to an error within the tcp_ack() function in net/ipv4/tcp_input.c, which can result in system accepting ACK responses for bytes that were never sent. A remote attacker can perform spoofing attack.
2) Race condition (CVE-ID: CVE-2023-6531)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a race condition when the unix garbage collector's deletion of a SKB races with unix_stream_read_generic() on the socket that the SKB is queued on. A local user can exploit the race and escalate privileges on the system.
3) Out-of-bounds read (CVE-ID: CVE-2023-6606)
The vulnerability allows a local user to gain access to sensitive information.
The vulnerability exists due to a boundary condition within the smbCalcSize() function in fs/smb/client/netmisc.c file. A local user can trigger an out-of-bounds read error and gain access to sensitive information or crash the kernel.
4) Use-after-free (CVE-ID: CVE-2023-6817)
The vulnerability allows a local authenticated user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the netfilter nf_tables component in Linux kernel. A local authenticated user can trigger a use-after-free error and escalate privileges on the system.
5) Out-of-bounds write (CVE-ID: CVE-2023-6931)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error in the Linux kernel's Performance Events system component. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
6) Use-after-free (CVE-ID: CVE-2024-0193)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a use-after-free error within the netfilter subsystem of the Linux kernel. A local user with CAP_NET_ADMIN capability can escalate privileges on the system.
7) Integer underflow (CVE-ID: CVE-2024-0565)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer underflow within the receive_encrypted_standard() function in fs/smb/client/smb2ops.c in the SMB Client sub-component in the Linux Kernel. A remote attacker can trick the victim to connect to a malicious SMB server, trigger an integer underflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
8) Out-of-bounds write (CVE-ID: CVE-2024-0646)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to a boundary error when processing untrusted input in the Linux kernel’s Transport Layer Security functionality in the way a user calls a function splice with a ktls socket as the destination. A local user can trigger an out-of-bounds write and execute arbitrary code with elevated privileges.
9) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2024-25744)
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to missing access restrictions related to arch/x86/coco/tdx/tdx.c and arch/x86/mm/mem_encrypt_amd.c. An untrusted VMM can trigger int80 syscall handling at any given point and perform a denial of service (DoS) attack.
Remediation
Install update from vendor's website.