Security Advisory

1) Improper access control

Severity: High

CVSSv3:
7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2019-16538

CWE-ID:
CWE-284 – Improper Access Control

Exploit availability:
No

Description


The vulnerability allows a remote attacker to bypass sandbox restrictions.

The vulnerability exists due to improper access restrictions. A remote authenticated attacker can circumvent the Sandbox protection through closure default parameter expressions and execute arbitrary code on the Jenkins master JVM.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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) Permissions, Privileges, and Access Controls

Severity: High

CVSSv3:
7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-2109

CWE-ID:
CWE-264 – Permissions, Privileges, and Access Controls

Exploit availability:
No

Description


The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to the sandbox protection in the affected
plugin can be circumvented through default parameter expressions in CPS-transformed methods. A remote authenticated attacker can specify and run
sandboxed Pipelines to execute arbitrary code in the context of the
Jenkins master JVM.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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.

3) Permissions, Privileges, and Access Controls

Severity: High

CVSSv3:
7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-2110

CWE-ID:
CWE-264 – Permissions, Privileges, and Access Controls

Exploit availability:
No

Description


The vulnerability allows a remote user to escalate privileges on the system.


The vulnerability exists due to the sandbox protection in the affected
plugin can be circumvented during the script compilation phase by applying AST transforming annotations such as “@Grab” to imports or by using them inside of other annotations. A remote user with Overall/Read permission can bypass sandbox protection and execute arbitrary code in the context of the
Jenkins master JVM.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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.

4) Stored cross-site scripting

Severity: Low

CVSSv3:
5.6 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-2111

CWE-ID:
CWE-79 – Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’)

Exploit availability:
No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to the affected software does not escape the error message for the Project Repository Base URL field form validation. A remote authenticated attacker can inject and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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.

5) Permissions, Privileges, and Access Controls

Severity: High

CVSSv3:
7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-2134

CWE-ID:
CWE-264 – Permissions, Privileges, and Access Controls

Exploit availability:
No

Description


The vulnerability allows a remote attacker to escalate privileges on the system.


The vulnerability exists due to the Sandbox protection can be circumvented through a crafted constructor calls and bodies. A remote authenticated attacker can specify and run sandboxed scripts to execute arbitrary code in the context of the Jenkins master JVM.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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.

6) Permissions, Privileges, and Access Controls

Severity: High

CVSSv3:
7.7 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-2135

CWE-ID:
CWE-264 – Permissions, Privileges, and Access Controls

Exploit availability:
No

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The
vulnerability exists due to the Sandbox protection can be circumvented
through a crafted method calls on objects that implement “GroovyInterceptable”. A remote authenticated attacker can
specify and run sandboxed scripts to execute arbitrary code in the
context of the Jenkins master JVM.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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.

7) Stored cross-site scripting

Severity: Low

CVSSv3:
5.6 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID:
CVE-2020-2136

CWE-ID:
CWE-79 – Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’)

Exploit availability:
No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data in error message for the repository URL for Microsoft TFS field form validation. A remote authenticated attacker can inject and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor’s website.

Vulnerable software versions

jenkins-2-plugins (Red Hat package):
3.7.1502412812-1.el7, 3.11.1542061886-1.el7, 3.11.1549642489-1.el7, 3.11.1560870549-1.el7, 3.11.1566492396-1.el7, 3.11.1568994366-1.el7, 3.11.1577428005-1.el7, 4.1.1556549703-1.el7, 4.1.1561471763-1.el7, 4.1.1567707934-1.el7, 4.1.1567784275-1.el7, 4.1.1571057286-1.el7, 4.1.1572877452-1.el7, 4.1.1574872364-1.el7, 4.1.1583850385-1.el7, 4.2.1568997376-1.el7, 4.2.1574873592-1.el7, 4.2.1581952573-1.el7, 4.2.1583446990-1.el7, 4.3.1574944219-1.el7, 4.3.1581956184-1.el7, 4.3.1583445947-1.el7

CPE

External links

https://access.redhat.com/errata/RHSA-2020:2737

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.





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