Multiple vulnerabilities in Rubygem Rack
| Risk | High |
| Patch available | YES |
| Number of vulnerabilities | 3 |
| CVE-ID | CVE-2022-30123 CVE-2022-30122 CVE-2020-8184 |
| CWE-ID | CWE-78 CWE-20 CWE-353 |
| Exploitation vector | Network |
| Public exploit | N/A |
| Vulnerable software Subscribe |
Rack Web applications / Modules and components for CMS |
| Vendor | Rack |
Security Bulletin
This security bulletin contains information about 3 vulnerabilities.
1) 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')
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to execute arbitrary shell commands on the target system.
The vulnerability exists due to improper input validation when handling input passed via Rack's Lint middleware and CommonLogger middleware. A remote unauthenticated attacker can pass specially crafted data to the application and execute arbitrary OS commands on the target system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
MitigationInstall updates from vendor's website.
Vulnerable software versionsRack: 0.1 - 2.2.3
External linkshttp://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2022-30123.yml
http://github.com/rack/rack/commit/b426cc224908ec6ed6eb8729325392b048215d88
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) 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
DescriptionThe 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.
MitigationInstall updates from vendor's website.
Vulnerable software versionsRack: 1.2 - 2.2.3
External linkshttp://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2022-30122.yml
http://github.com/rack/rack/commit/d286516cbd58fbb2ad6944ce9040e9ba96d9371a
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.
3) Missing support for integrity check
EUVDB-ID: #VU67621
Risk: Low
CVSSv3.1: 3.2 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N/E:U/RL:O/RC:C]
CVE-ID: CVE-2020-8184
CWE-ID:
CWE-353 - Missing Support for Integrity Check
Exploit availability: No
DescriptionThe vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to missing integrity check of secure cookies. A remote attacker can alter the cookies in the requests and bypass implemented security restrictions.
Install updates from vendor's website.
Vulnerable software versionsRack: 2.1.0 - 2.2.2
External linkshttp://groups.google.com/g/rubyonrails-security/c/OWtmozPH9Ak
http://hackerone.com/reports/895727
http://lists.debian.org/debian-lts-announce/2020/07/msg00006.html
http://usn.ubuntu.com/4561-1/
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.
