Multiple vulnerabilities in Jenkins Amazon EC2 plugin



Published: 2020-05-07
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
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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

CVSSv3.1: 3.8 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

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

http://www.openwall.com/lists/oss-security/2020/05/06/3
http://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

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

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

http://www.openwall.com/lists/oss-security/2020/05/06/3
http://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

CVSSv3.1: 5.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C]

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

http://www.openwall.com/lists/oss-security/2020/05/06/3
http://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

CVSSv3.1: 4.9 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

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

http://www.openwall.com/lists/oss-security/2020/05/06/3
http://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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