SB2023021438 - Multiple vulnerabilities in Microsoft PostScript Printer Driver

Description

This security bulletin contains information about 3 vulnerabilities.

1) Out-of-bounds read (CVE-ID: CVE-2023-21693)

CWE-ID: CWE-125 - Out-of-bounds read

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to a boundary condition in Microsoft PostScript Printer Driver. A remote attacker can trick the victim into connecting to a malicious printer, trigger an out-of-bounds read error and read small portions of heap memory.

2) Input validation error (CVE-ID: CVE-2023-21801)

CWE-ID: CWE-20 - Improper input validation

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input in Microsoft PostScript Printer Driver. A remote attacker can trick the victim to open a specially crafted file and execute arbitrary code on the target system.

3) Buffer overflow (CVE-ID: CVE-2023-21684)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote user to execute arbitrary code on the target system.

The vulnerability exists due to a boundary error Microsoft PostScript Printer Driver. A remote user can send a specially crafted file to a shared printer, trigger memory corruption and execute arbitrary code on the system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21693
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21801
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-21684