SB2023030922 - Multiple vulnerabilities in Jenkins and Jenkins LTS

Description

This security bulletin contains information about 8 secuirty vulnerabilities.

1) Stored cross-site scripting (CVE-ID: CVE-2023-27898)

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 plugin manager. A remote 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.

2) Code Injection (CVE-ID: CVE-2023-27899)

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to the affected plugin creates the temporary file in the system temporary directory with the default permissions for newly created files. A remote user can read and write the file before it is installed in Jenkins and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

3) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2023-24998)

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

The vulnerability exists due to Apache Commons FileUpload does not limit the number of request parts. A remote attacker can initiate a series of uploads and perform a denial of service (DoS) attack.

4) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2023-27900)

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

The vulnerability exists due to Apache Commons FileUpload does not limit the number of request parts within the MultipartFormDataParser. A remote user can initiate a series of uploads and perform a denial of service (DoS) attack.

5) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2023-27901)

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

The vulnerability exists due to Apache Commons FileUpload does not limit the number of request parts within the StaplerRequest. A remote user can initiate a series of uploads and perform a denial of service (DoS) attack.

6) Path traversal (CVE-ID: CVE-2023-27902)

The vulnerability allows a remote attacker to perform directory traversal attacks.

The vulnerability exists due to the affected plugin shows these temporary directories when viewing job workspaces. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

7) Incorrect default permissions (CVE-ID: CVE-2023-27903)

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to the affected plugin creates the temporary file in the default temporary directory with the default permissions for newly created files. A local user can read and write the file before it is used in the build.

8) Information disclosure (CVE-ID: CVE-2023-27904)

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to excessive data output by the application within error stack traces related to agents. A remote user can gain unauthorized access to sensitive information on the system.

Remediation

Install update from vendor's website.

References

• https://www.jenkins.io/security/advisory/2023-03-08/</p><p><br></p>
• https://www.jenkins.io/security/advisory/2023-03-08/