SB2022031429 - Multiple vulnerabilities in GNU C Library
Published: March 14, 2022
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 secuirty vulnerabilities.
1) Buffer overflow (CVE-ID: CVE-2022-23219)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the clnt_create() function in the sunrpc module. A remote attacker can pass specially crafted input to the application that is using the affected library version, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
2) Buffer overflow (CVE-ID: CVE-2022-23218)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to a boundary error within the svcunix_create() in the sunrpc module ib glibc. A remote attacker can pass specially crafted input to the application that is using the affected library version, trigger memory corruption and execute arbitrary code on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
3) Off-by-one (CVE-ID: CVE-2021-3999)
The vulnerability allows a remote attacker to execute arbitrary code on the system.
The vulnerability exists due to an off-by-one error glibc getcwd() function. A remote attacker can pass specially crafted input to the application that is using the affected library version, trigger an off-by-one error and execute arbitrary code on the target system.
4) Memory leak (CVE-ID: CVE-2021-3998)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due memory leak in glibc realpath() function. A remote attacker can force the application to leak memory and perform denial of service attack or gain access to sensitive information.
Remediation
Install update from vendor's website.