SB2023091465 - Ubuntu update for ghostscript

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Main Vulnerability Database SB2023091465

SB2023091465 - Ubuntu update for ghostscript

Published: September 14, 2023

Security Bulletin ID SB2023091465
CSH Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) Division by zero (CVE-ID: CVE-2020-21710)

CWE-ID: CWE-369 - Divide By Zero

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


The vulnerability allows a remote attacker to crash the application.

The vulnerability exists due to a divide by zero error within the eps_print_page() function in gdevepsn.c. A remote attacker can trick the victim to open a specially crafted PDF file and crash the application.


2) Out-of-bounds write (CVE-ID: CVE-2020-21890)

CWE-ID: CWE-787 - Out-of-bounds write

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


The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the clj_media_size() function in devices/gdevclj.c. A remote attacker can trick the victim to open a specially crafted PDF file, trigger an out-of-bounds write and execute arbitrary code on the target system.


Remediation

Install update from vendor's website.

References