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| Description: | | 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 blocklist-based protection mechanism. We're fixing this issue by adding `SignedObject` to the blocklist. 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. |
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| Impact: | | An attacker can execute arbitrary code via a successful exploit in the context of the vulnerable software. |
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| Affected OS: | | Windows, Linux, FreeBSD, Solaris, Other Unix, Network Device, Mac OS, iOS, Android, Others |
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| Reference: | | SecurityFocusBID:98056
ExploitDB:41965
https://jenkins.io/security/advisory/2017-04-26/
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