Multiple vulnerabilities in Jenkins Amazon EC2 plugin



Risk Medium
Patch available YES
Number of vulnerabilities 4
CVE-ID CVE-2020-2188
CVE-2020-2187
CVE-2020-2186
CVE-2020-2185
CWE-ID CWE-285
CWE-300
CWE-352
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Amazon EC2
Web applications / Modules and components for CMS

Vendor Jenkins

Security Bulletin

This security bulletin contains information about 4 vulnerabilities.

1) Improper Authorization

EUVDB-ID: #VU27614

Risk: Low

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-2188

CWE-ID: CWE-285 - Improper Authorization

Exploit availability: No

Description

The vulnerability allows a remote user to bypass authorization checks.

The vulnerability exists due to the affected plugin performs improper permission checks when providing a list of applicable credentials IDs to allow users configuring the plugin to select the one to use. A remote authenticated attacker with Overall/Read permission can get a list of valid credentials IDs.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Amazon EC2: 1.0 - 1.50.1

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2020/05/06/3
https://jenkins.io/security/advisory/2020-05-06/#SECURITY-1844


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

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

2) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU27613

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-2187

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to the affected plugin unconditionally accepts self-signed HTTPS certificates and does not perform hostname validation when connecting to Windows agents. A remote attacker can perform a man-in-the-middle attack and intercept these connections to build agents.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Amazon EC2: 1.0 - 1.50.1

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2020/05/06/3
https://jenkins.io/security/advisory/2020-05-06/#SECURITY-1528


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) Cross-site request forgery

EUVDB-ID: #VU27612

Risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-2186

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform cross-site request forgery attacks.

The vulnerability exists due to insufficient validation of the HTTP request origin. A remote attacker can trick the victim to visit a specially crafted web page and perform arbitrary actions on behalf of the victim on the vulnerable website.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Amazon EC2: 1.0 - 1.50.1

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2020/05/06/3
https://jenkins.io/security/advisory/2020-05-06/#SECURITY-1408


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.

4) Man-in-the-Middle (MitM) attack

EUVDB-ID: #VU27611

Risk: Medium

CVSSv4.0: 1.7 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-2185

CWE-ID: CWE-300 - Channel Accessible by Non-Endpoint ('Man-in-the-Middle')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a man-in-the-middle (MitM) attack.

The vulnerability exists due to the affected plugin does not use SSH host key validation when connecting to agents. A remote attacker can perform a man-in-the-middle attack and intercept these connections to build agents.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Amazon EC2: 1.0 - 1.50.1

CPE2.3 External links

https://www.openwall.com/lists/oss-security/2020/05/06/3
https://jenkins.io/security/advisory/2020-05-06/#SECURITY-381


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.



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