SB2023012406 - Multiple vulnerabilities in cmark

Description

This security bulletin contains information about 2 vulnerabilities.

1) Inefficient Algorithmic Complexity (CVE-ID: CVE-2023-22486)

CWE-ID: CWE-407 - Inefficient Algorithmic Complexity

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

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

The vulnerability exists due to a polynomial time complexity issue in cmark-gfm in handle_close_bracket. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

2) Inefficient Algorithmic Complexity (CVE-ID: CVE-2023-22484)

CWE-ID: CWE-407 - Inefficient Algorithmic Complexity

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

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

The vulnerability exists due to a polynomial time complexity issue in cmark-gfm may in handle_pointy_brace. A remote attacker can trigger resource exhaustion and perform a denial of service (DoS) attack.

Remediation

Install update from vendor's website.

References

• https://github.com/github/cmark-gfm/security/advisories/GHSA-r572-jvj2-3m8p
• https://github.com/github/cmark-gfm/security/advisories/GHSA-24f7-9frr-5h2r