SB2023071289 - Ubuntu update for ruby2.3

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Incorrect Regular Expression (CVE-ID: CVE-2023-28755)

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

The vulnerability exists due to insufficient input validation when processing URLs. A remote attacker can pass specially crafted URL to the application and perform regular expression denial of service (ReDos) attack.

2) Incorrect Regular Expression (CVE-ID: CVE-2023-36617)

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

The vulnerability exists due to insufficient input validation when parsing URL. A remote attacker can pass specially crafted URL to the application and perform regular expression denial of service (ReDos) attack.

Note, the vulnerability exists due to incomplete fix for #VU74004 (CVE-2023-28755).

Remediation

Install update from vendor's website.

References

• https://ubuntu.com/security/notices/USN-6219-1