SB2021090852 - Ubuntu update for libgd2 

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Main Vulnerability Database SB2021090852

SB2021090852 - Ubuntu update for libgd2

Published: September 8, 2021

Security Bulletin ID SB2021090852
Severity
High
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

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

Description

This security bulletin contains information about 2 secuirty vulnerabilities.


1) Double Free (CVE-ID: CVE-2021-40145)

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

The vulnerability exists due to a boundary error within the gdImageGd2Ptr() function in gd_gd2.c. A remote attacker can pass specially crafted data to the application, trigger double free error and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.


2) Out-of-bounds read (CVE-ID: CVE-2021-38115)

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition in the "ead_header_tga" in gd_tga.c. A remote attacker can send a specially crafted TGA file, trigger out-of-bounds read error and cause a denial of service condition on the system.


Remediation

Install update from vendor's website.

References