SB2021021723 - Multiple vulnerabilities in OpenShift Container Platform
Published: February 17, 2021
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 13 secuirty vulnerabilities.
1) Incorrect default permissions (CVE-ID: CVE-2020-1945)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to Apache Ant is using a default temporary directory identified by the Java system property java.io.tmpdir for several tasks and may thus leak sensitive information. The fixcrlf and replaceregexp tasks also copy files from the temporary directory back into the build tree allowing an attacker to inject modified source files into the build process. A local user with access to the system can view contents of files and directories or modify them.
2) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2020-11979)
The vulnerability allows a local user to escalate privileges on the system.
The vulnerability exists due to incorrect patch for vulnerability #VU27924 (CVE-2020-1945). Apache Ant 1.10.8 changed the permissions of temporary files it created so that only the current user was allowed to access them. Unfortunately the fixcrlf task deleted the temporary file and created a new one without said protection, effectively nullifying the effort. This would still allow an attacker to inject modified source files into the build process.
3) Information disclosure (CVE-ID: CVE-2021-21602)
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output by the application in workspace browsers. A remote authenticated attacker can create symbolic links that allow them to access files outside workspaces using the workspace browser.
4) Cross-site scripting (CVE-ID: CVE-2021-21603)
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 notification bar. A remote authenticated attacker can trick the victim to follow a specially crafted link 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.
5) XML injection (CVE-ID: CVE-2021-21604)
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to improper handling of REST API XML deserialization errors. A remote authenticated attacker can pass specially crafted XML data to the application and perform arbitrary actions on the system.
Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.
6) Path traversal (CVE-ID: CVE-2021-21605)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to input validation error when processing directory traversal sequences in agent names. A remote authenticated attacker can choose agent names that cause Jenkins to override unrelated "config.xml" files.
7) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-21606)
The vulnerability allows a remote attacker to gain access to sensitive information.
The vulnerability exists due to arbitrary file existence check in file fingerprints. A remote authenticated attacker can check for the existence of XML files on the controller file system where the relative path can be constructed as 32 characters.
8) Buffer overflow (CVE-ID: CVE-2021-21607)
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to the affected software does not limit the graph size provided as query parameters. A remote authenticated attacker can trigger memory corruption and cause a denial of service condition on the target system.
9) Stored cross-site scripting (CVE-ID: CVE-2021-21608)
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 button labels. 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.
10) Permissions, Privileges, and Access Controls (CVE-ID: CVE-2021-21609)
The vulnerability allows a remote attacker to gain access to sensitive information on the system.
The vulnerability exists due to a missing permission check for paths with specific prefix. A remote attacker can access plugin-provided URLs.
11) Cross-site scripting (CVE-ID: CVE-2021-21610)
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 markup formatter preview. A remote attacker can trick the victim to follow a specially crafted link 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.
12) Stored cross-site scripting (CVE-ID: CVE-2021-21611)
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 on new item page. 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.
13) Time-of-check Time-of-use (TOCTOU) Race Condition (CVE-ID: CVE-2021-21615)
The vulnerability allows a remote user to gain access to sensitive information.
The vulnerability exists due to a race condition in the file browser for workspaces. A remote user with Job/Workspace permission and the ability to control workspace contents, e.g., with Job/Configure permission or the ability to change SCM contents, can create symbolic links that allow them to access files outside workspaces using the workspace browser.
Note, the vulnerability is caused by incorrect patch for #VU49527
Remediation
Install update from vendor's website.