Jenkins < 2.46.2 / 2.57 and Jenkins Enterprise < 1.625.24.1 / 1.651.24.1 / 184.108.40.206.1 / 220.127.116.11 Multiple Vulnerabilities
Critical Nessus Plugin ID 99984
SynopsisA job scheduling and management system hosted on the remote web server
is affected by multiple vulnerabilities.
DescriptionThe version of Jenkins running on the remote web server is prior to
2.57 or is a version of Jenkins LTS prior to 2.46.2, or else it is
a version of Jenkins Enterprise that is 1.625.x.y prior to 1.625.24.1,
1.651.x.y prior to 1.651.24.1, 2.7.x.0.y prior to 18.104.22.168.1, or
2.x.y.z prior to 22.214.171.124. It is, therefore, affected by multiple
- A remote code execution vulnerability exists within
allows an untrusted serialized Java SignedObject to be
transfered to the remoting-based Jenkins CLI and
deserialized using a new ObjectInputStream. By using a
specially crafted request, an unauthenticated, remote
attacker can exploit this issue to bypass existing
blacklist protection mechanisms and execute arbitrary
- A flaw exists in the remoting-based CLI, specifically in
the ClientAuthenticationCache.java class, when storing
the encrypted username of a successfully authenticated
user in a cache file that is used to authenticate
further commands. An authenticated, remote attacker who
has sufficient permissions to create secrets in Jenkins
and download their encrypted values can exploit this
issue to impersonate any other Jenkins user on the same
- A denial of service vulnerability exists in the XStream
library. An authenticated, remote attacker who has
sufficient permissions, such as creating or configuring
items, views or jobs, can exploit this to crash the Java
process by using specially crafted XML content.
- Cross-site request forgery (XSRF) vulnerabilities exist
within multiple Java classes due to a failure to require
multiple steps, explicit confirmation, or a unique token
when performing certain sensitive actions. An
unauthenticated, remote attacker can exploit these to
perform several administrative actions by convincing a
user into opening a specially crafted web page.
Note that Nessus has not tested for these issues but has instead
relied only on the application's self-reported version number.
SolutionUpgrade Jenkins to version 2.57 or later, Jenkins LTS to version
2.46.2 or later, or Jenkins Enterprise to version 1.625.24.1 /
1.651.24.1 / 126.96.36.199.1 / 188.8.131.52 or later.