SB2023040714 - Amazon Linux AMI update for yasm

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Main Vulnerability Database SB2023040714

SB2023040714 - Amazon Linux AMI update for yasm

Published: April 7, 2023

Security Bulletin ID SB2023040714
CSH Severity
Low
Patch available
YES
Number of vulnerabilities 2
Exploitation vector Remote access
Highest impact Partial DoS

Breakdown by Severity

Low 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 2 vulnerabilities.


1) NULL pointer dereference (CVE-ID: CVE-2021-33454)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the yasm_expr_get_intnum() function in libyasm/expr.c. A remote attacker can perform a denial of service (DoS) attack.


2) NULL pointer dereference (CVE-ID: CVE-2021-33459)

CWE-ID: CWE-476 - NULL Pointer Dereference

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 perform a denial of service (DoS) attack.

The vulnerability exists due to a NULL pointer dereference error within the nasm_parser_directive() function in modules/parsers/nasm/nasm-parse.c. A remote attacker can perform a denial of service (DoS) attack.


Remediation

Install update from vendor's website.

References