[java-sig-commits] [Bug 1797080] New: CVE-2020-2099 jenkins: Inbound TCP Agent Protocol/3 authentication bypass

https://bugzilla.redhat.com/show_bug.cgi?id=1797080

Bug ID: 1797080
           Summary: CVE-2020-2099 jenkins: Inbound TCP Agent Protocol/3
                    authentication bypass
           Product: Security Response
          Hardware: All
                OS: Linux
            Status: NEW
         Component: vulnerability
          Keywords: Security
          Severity: medium
          Priority: medium
          Assignee: [e-mail]
          Reporter: [e-mail]
                CC: [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail], [e-mail],
                    [e-mail]
  Target Milestone: ---
    Classification: Other

Jenkins 2.213 and earlier, LTS 2.204.1 and earlier improperly reuses encryption
key parameters in the Inbound TCP Agent Protocol/3, allowing unauthorized
attackers with knowledge of agent names to obtain the connection secrets for
those agents, which can be used to connect to Jenkins, impersonating those
agents.

References:

https://jenkins.io/security/advisory/2020-01-29/#SECURITY-1682
http://www.openwall.com/lists/oss-security/2020/01/29/1