jenkins: Open redirect vulnerability

In Jenkins 2.499 and earlier, LTS 2.492.1 and earlier, redirects starting with backslash (`\`) characters are considered safe, allowing attackers to perform phishing attacks by having users go to a Jenkins URL that will forward them to a different site, because browsers interpret these characters as part of scheme-relative redirects.

jenkins: cross-site WebSocket hijacking

Jenkins 2.217 through 2.441 (both inclusive), LTS 2.222.1 through 2.426.2 (both inclusive) does not perform origin validation of requests made through the CLI WebSocket endpoint, resulting in a cross-site WebSocket hijacking (CSWSH) vulnerability, allowing attackers to execute CLI commands on the Jenkins controller.

Jenkins Subversion Partial Release Manager Plugin 1.0.1 and earlier programmatically disables the fix for CVE-2016-3721 whenever a build is triggered from a release tag, by setting the Java system property 'hudson.model.ParametersAction.keepUndefinedParameters'.

A cross-site request forgery (CSRF) vulnerability in Jenkins NeuVector Vulnerability Scanner Plugin 1.22 and earlier allows attackers to connect to an attacker-specified hostname and port using attacker-specified username and password.

Jenkins: stored XSS in Jenkins

Jenkins 2.367 through 2.369 (both inclusive) does not escape tooltips of the l:helpIcon UI component used for some help icons on the Jenkins web UI, resulting in a stored cross-site scripting (XSS) vulnerability exploitable by attackers able to control tooltips for this component.

Jenkins Compuware Xpediter Code Coverage Plugin 1.0.7 and earlier implements an agent/controller message that does not limit where it can be executed, allowing attackers able to control agent processes to obtain the values of Java system properties from the Jenkins controller process.

Jenkins Katalon Plugin 1.0.32 and earlier implements an agent/controller message that does not limit where it can be executed and allows invoking Katalon with configurable arguments, allowing attackers able to control agent processes to invoke Katalon on the Jenkins controller with attacker-controlled version, install location, and arguments, and attackers additionally able to create files on the Jenkins controller (e.g., attackers with Item/Configure permission could archive artifacts) to invoke arbitrary OS commands.

Jenkins Compuware Topaz for Total Test Plugin 2.4.8 and earlier implements an agent/controller message that does not limit where it can be executed, allowing attackers able to control agent processes to read arbitrary files on the Jenkins controller file system.

Jenkins Compuware Topaz for Total Test Plugin 2.4.8 and earlier implements an agent/controller message that does not limit where it can be executed, allowing attackers able to control agent processes to obtain the values of Java system properties from the Jenkins controller process.

Jenkins Compuware Source Code Download for Endevor, PDS, and ISPW Plugin 2.0.12 and earlier implements an agent/controller message that does not limit where it can be executed, allowing attackers able to control agent processes to obtain the values of Java system properties from the Jenkins controller process.

Jenkins Compuware Topaz Utilities Plugin 1.0.8 and earlier implements an agent/controller message that does not limit where it can be executed, allowing attackers able to control agent processes to obtain the values of Java system properties from the Jenkins controller process.

Jenkins OpenId Connect Authentication Plugin 4.354.v321ce67a_1de8 and earlier does not check the `aud` (Audience) claim of an ID Token, allowing attackers to subvert the authentication flow, potentially gaining administrator access to Jenkins.

Jenkins OpenId Connect Authentication Plugin 4.354.v321ce67a_1de8 and earlier does not check the `iss` (Issuer) claim of an ID Token, allowing attackers to subvert the authentication flow, potentially gaining administrator access to Jenkins.

jenkins: Temporary plugin file created with insecure permissions

Jenkins 2.423 and earlier, LTS 2.414.1 and earlier creates a temporary file in the system temporary directory with the default permissions for newly created files when installing a plugin from a URL, potentially allowing attackers with access to the system temporary directory to replace the file before it is installed in Jenkins, potentially resulting in arbitrary code execution.

jenkins: Missing permission check allows retrieving agent configurations

A missing permission check in Jenkins 2.503 and earlier, LTS 2.492.2 and earlier allows attackers with Computer/Create permission but without Computer/Extended Read permission to copy an agent, gaining access to its configuration.

jenkins: Missing permission check allows retrieving secrets from agent configurations

A missing permission check in Jenkins 2.503 and earlier, LTS 2.492.2 and earlier allows attackers with Computer/Create permission but without Computer/Configure permission to copy an agent, gaining access to encrypted secrets in its configuration.

jenkins: XSS via a crafted tool name in a job configuration form

Jenkins through 2.93 allows remote authenticated administrators to conduct XSS attacks via a crafted tool name in a job configuration form, as demonstrated by the JDK tool in Jenkins core and the Ant tool in the Ant plugin, aka SECURITY-624.

Tomcat: failure to set httponly flag on cookies

Jenkins before 1.586 does not set the HttpOnly flag in a Set-Cookie header for session cookies when run on Tomcat 7.0.41 or later, which makes it easier for remote attackers to obtain potentially sensitive information via script access to cookies.

Tomcat: failure to set secure flag on cookies

Jenkins before 1.586 does not set the secure flag on session cookies when run on Tomcat 7.0.41 or later, which makes it easier for remote attackers to capture cookies by intercepting their transmission within an HTTP session.

jenkins: Re-key admin monitor leaves behind unencrypted credentials in upgraded installations (SECURITY-376)

The re-key admin monitor was introduced in Jenkins 1.498 and re-encrypted all secrets in JENKINS_HOME with a new key. It also created a backup directory with all old secrets, and the key used to encrypt them. These backups were world-readable and not removed afterwards. Jenkins now deletes the backup directory, if present. Upgrading from before 1.498 will no longer create a backup directory. Administrators relying on file access permissions in their manually created backups are advised to check them for the directory $JENKINS_HOME/jenkins.security.RekeySecretAdminMonitor/backups, and delete it if present.