CVE-2017-1000353 Information

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 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.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Reference

http://packetstormsecurity.com/files/159266/Jenkins-2.56-CLI-Deserialization-Code-Execution.html http://www.securityfocus.com/bid/98056 https://jenkins.io/security/advisory/2017-04-26/ https://www.exploit-db.com/exploits/41965/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

9.8