SB2024021639 - Ubuntu update for edk2
Published: February 16, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 10 secuirty vulnerabilities.
1) Integer overflow (CVE-ID: CVE-2022-36763)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within the Tcg2MeasureGptTable() function when reading untrusted input from the disk. A local user can set up a malicious GPT table to trigger an integer overflow and overwrite code from UEFI applications.
2) Integer overflow (CVE-ID: CVE-2022-36764)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to integer overflow within the Tcg2MeasurePeImage() function. A remote attacker can pass specially crafted data to the application, trigger an integer overflow and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Integer overflow (CVE-ID: CVE-2022-36765)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to integer overflow within the CreateHob() function. A local user can trigger an integer overflow and execute arbitrary code on the target system.
4) Buffer overflow (CVE-ID: CVE-2023-45230)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary within a long server ID option in DHCPv6 client. A remote attacker on the local network can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
5) Buffer overflow (CVE-ID: CVE-2023-45234)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when processing DNS Servers option from a DHCPv6 Advertise message. A remote attacker on the local network can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
6) Buffer overflow (CVE-ID: CVE-2023-45235)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error when handling Server ID option from a DHCPv6 proxy Advertise message. A remote attacker on the local network can trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
7) Out-of-bounds read (CVE-ID: CVE-2023-45231)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition when processing Neighbor Discovery Redirect message. A remote attacker on the local network can trigger an out-of-bounds read error and read contents of memory on the system.
8) Infinite loop (CVE-ID: CVE-2023-45232)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop when parsing unknown options in the Destination Options header of IPv6. A remote attacker can consume all available system resources and cause denial of service conditions.
9) Infinite loop (CVE-ID: CVE-2023-45233)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to infinite loop when parsing a PadN option in the Destination Options header of IPv6. A remote attacker can consume all available system resources and cause denial of service conditions.
10) Incorrect default permissions (CVE-ID: CVE-2023-48733)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect default permissions on the UEFI Shell. A local user can bypass the Secure Boot and escalate privileges on the system.
Remediation
Install update from vendor's website.