Ubuntu update for ruby-rack

Published: 2023-02-27

Risk	High
Patch available	YES
Number of vulnerabilities	2
CVE-ID	CVE-2022-30122 CVE-2022-30123
CWE-ID	CWE-20 CWE-78
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	Ubuntu Operating systems & Components / Operating system ruby-rack (Ubuntu package) Operating systems & Components / Operating system package or component
Vendor	Canonical Ltd.

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU64862

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-30122

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when parsing multipart POST requests. A remote attacker can send specially crafted multipart POST requests to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected package ruby-rack to the latest version.

Vulnerable software versions

Ubuntu: 18.04 - 22.04

ruby-rack (Ubuntu package): before Ubuntu Pro

External links

http://ubuntu.com/security/notices/USN-5896-1

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) OS Command Injection

EUVDB-ID: #VU64863

Risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-30123

CWE-ID: CWE-78 - Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')