SB20230818196 - Multiple vulnerabilities in Bzip3

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Main Vulnerability Database SB20230818196

SB20230818196 - Multiple vulnerabilities in Bzip3

Published: August 18, 2023

Security Bulletin ID SB20230818196
Severity
High
Patch available
YES
Number of vulnerabilities 5
Exploitation vector Remote access
Highest impact Code execution

Breakdown by Severity

High 40% Medium 40% Low 20%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 5 secuirty vulnerabilities.


1) Out-of-bounds write (CVE-ID: CVE-2023-29421)

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a boundary error within the bz3_decode_block() function in libbzip3.a. A remote attacker can trigger an out-of-bounds write and execute arbitrary code on the target system.


2) Buffer overflow (CVE-ID: CVE-2023-29420)

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

The vulnerability exists due to a boundary error within the bz3_decode_block() function in libbzip3.a. A remote attacker 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.


3) Out-of-bounds read (CVE-ID: CVE-2023-29419)

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

The vulnerability exists due to an out-of-bounds read within the bz3_decode_block() function in libbzip3.a. A remote attacker can pass a specially crafted archive to the application and crash it.


4) Out-of-bounds read (CVE-ID: CVE-2023-29418)

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

The vulnerability exists due to an out-of-bounds read in libbzip3.a due to an xwrite out-of-bounds read. A remote attacker can perform a denial of service (DoS) attack.


5) Out-of-bounds read (CVE-ID: CVE-2023-29417)

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

The vulnerability exists due to an out-of-bounds read within the bz3_decompress() function in libbzip3.a. A remote attacker can pass specially crafted archive to the application and perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References