Vulnerability Name:

CVE-2019-11251 (CCN-168617)

Assigned:2019-09-24
Published:2019-09-24
Updated:2020-02-06
Summary:The Kubernetes kubectl cp command in versions 1.1-1.12, and versions prior to 1.13.11, 1.14.7, and 1.15.4 allows a combination of two symlinks provided by tar output of a malicious container to place a file outside of the destination directory specified in the kubectl cp invocation. This could be used to allow an attacker to place a nefarious file using a symlink, outside of the destination tree.
CVSS v3 Severity:5.7 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N)
5.0 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
5.9 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
5.2 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Network
Attack Complexity (AC): High
Privileges Required (PR): None
User Interaction (UI): None
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): High
Availibility (A): None
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:P/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Partial
Availibility (A): None
5.4 Medium (CCN CVSS v2 Vector: AV:N/AC:H/Au:N/C:N/I:C/A:N)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): High
Athentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): Complete
Availibility (A): None
Vulnerability Type:CWE-59
Vulnerability Consequences:File Manipulation
References:Source: MITRE
Type: CNA
CVE-2019-11251

Source: CCN
Type: Red Hat Bugzilla – Bug 1753495
(CVE-2019-11251) - CVE-2019-11251 kubernetes: `kubectl cp` allows for arbitrary file write via double symlinks

Source: XF
Type: UNKNOWN
kubernetes-cve201911251-unauth-access(168617)

Source: CONFIRM
Type: Third Party Advisory
https://github.com/kubernetes/kubernetes/issues/87773

Source: MLIST
Type: Mailing List, Third Party Advisory
Security release of kubectl versions v1.16.0 / 1.15.4 / 1.14.7 and 1.13.11 - CVE-2019-11251

Source: CCN
Type: Kubernetes Web site
Kubernetes

Source: CCN
Type: IBM Security Bulletin 1143454 (Watson Studio Local)
Multiple Vulnerabilities in Kubernetes affects IBM Watson Studio Local

Source: CCN
Type: IBM Security Bulletin 1164520 (Cloud Private)
A Security Vulnerability affects IBM Cloud Private - kubectl (CVE-2019-11251)

Source: CCN
Type: IBM Security Bulletin 1168570 (PowerAI Vision)
A security vulnerability has been identified in Kubernetes shipped with PowerAI Vision

Source: CCN
Type: IBM Security Bulletin 1274986 (API Connect)
IBM API Connect is impacted by a vulnerability in Kubernetes (CVE-2019-11251)

Source: CCN
Type: IBM Security Bulletin 6436613 (InfoSphere Information Server)
Multiple vulnerabilities in Kubernetes affect IBM InfoSphere Information Server

Source: CCN
Type: IBM Security Bulletin 6599703 (Db2 On Openshift)
Multiple vulnerabilities affect IBM Db2 On Openshift and IBM Db2 and Db2 Warehouse on Cloud Pak for Data

Vulnerable Configuration:Configuration 1:
  • cpe:/a:kubernetes:kubernetes:1.1-1.12:*:*:*:*:*:*:*
  • OR cpe:/a:kubernetes:kubernetes:*:*:*:*:*:*:*:* (Version >= 1.13.0 and < 1.13.11)
  • OR cpe:/a:kubernetes:kubernetes:*:*:*:*:*:*:*:* (Version >= 1.14.0 and < 1.14.7)
  • OR cpe:/a:kubernetes:kubernetes:*:*:*:*:*:*:*:* (Version >= 1.15.0 and < 1.15.4)

    • Configuration CCN 1:
  • cpe:/a:kubernetes:kubernetes:1.13.0:-:*:*:*:*:*:*
  • OR cpe:/a:kubernetes:kubernetes:1.14.0:*:*:*:*:*:*:*
  • OR cpe:/a:kubernetes:kubernetes:1.15.0:-:*:*:*:*:*:*
  • AND
  • cpe:/a:ibm:infosphere_information_server:11.7:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:watson_studio_local:1.2.3:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:powerai_vision:1.1.4:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:2018.4.1.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_private:3.2.0:cd:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_private:3.2.1:cd:*:*:*:*:*:*
  • OR cpe:/a:ibm:api_connect:2018.4.1.8:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:powerai_vision:1.1.3:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:com.ubuntu.disco:def:2019112510000000
    V
    		CVE-2019-11251 on Ubuntu 19.04 (disco) - untriaged.
    2019-09-23
    BACK
    kubernetes kubernetes 1.1-1.12
    kubernetes kubernetes *
    kubernetes kubernetes *
    kubernetes kubernetes *
    kubernetes kubernetes 1.13.0
    kubernetes kubernetes 1.14.0
    kubernetes kubernetes 1.15.0 -
    ibm infosphere information server 11.7
    ibm watson studio local 1.2.3
    ibm powerai vision 1.1.4
    ibm api connect 2018.4.1.0
    ibm cloud private 3.2.0 cd
    ibm cloud private 3.2.1 cd
    ibm api connect 2018.4.1.8
    ibm powerai vision 1.1.3