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CVE-2020-2099 (GCVE-0-2020-2099)

Vulnerability from cvelistv5 – Published: 2020-01-29 15:15 – Updated: 2024-08-04 07:01
VLAI
Summary
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.
Severity
8.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Assigner
References
URL Tags
https://jenkins.io/security/advisory/2020-01-29/#… x_refsource_CONFIRM
http://www.openwall.com/lists/oss-security/2020/01/29/1 mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2020:0681 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2020:0683 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHBA-2020:0402 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHBA-2020:0675 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version CPE status
Jenkins project Jenkins Affected: unspecified , ≤ 2.213 (custom)
Affected: unspecified , ≤ LTS 2.204.1 (custom)
guessed Create a notification for this product.
Show details on NVD website
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      "current_release_date": "2026-06-26T21:59:27+00:00",
      "cve": "CVE-2020-2099",
      "id": "CVE-2020-2099",
      "initial_release_date": "2020-01-29T00:00:00+00:00",
      "product_status:fixed": "89",
      "product_status:known_not_affected": "60",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "jenkins: Inbound TCP Agent Protocol/3 authentication bypass",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2020/cve-2020-2099.json",
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}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.