GHSA-26wc-3wqp-g3rp

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GHSA-26wc-3wqp-g3rp

Summary: Deserialization of Untrusted Data in Jenkins

Details: Jenkins versions 2.56 and earlier as well as 2.46.1 LTS and earlier are vulnerable to an unauthenticated remote code execution. An unauthenticated remote code execution vulnerability allowed attackers to transfer a serialized Java `SignedObject` object to the Jenkins CLI, that would be deserialized using a new `ObjectInputStream`, bypassing the existing blacklist-based protection mechanism. We're fixing this issue by adding `SignedObject` to the blacklist. We're also backporting the new HTTP CLI protocol from Jenkins 2.54 to LTS 2.46.2, and deprecating the remoting-based (i.e. Java serialization) CLI protocol, disabling it by default.

References: https://nvd.nist.gov/vuln/detail/CVE-2017-1000353, https://github.com/jenkinsci/jenkins/commit/36b8285a41eb28333549e8d851f81fd80a184076, https://github.com/jenkinsci/jenkins/commit/f237601afd750a0eaaf961e8120b08de238f2c3f, https://github.com/jenkinsci/jenkins, https://jenkins.io/security/advisory/2017-04-26, https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2017-1000353, https://www.exploit-db.com/exploits/41965, https://www.oracle.com/security-alerts/cpuapr2022.html, http://packetstormsecurity.com/files/159266/Jenkins-2.56-CLI-Deserialization-Code-Execution.html, http://www.securityfocus.com/bid/98056