| Vulnerability Name: | CVE-2021-37701 (CCN-208442) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Assigned: | 2021-08-31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Published: | 2021-08-31 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Updated: | 2023-01-19 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Summary: | The npm package "tar" (aka node-tar) before versions 4.4.16, 5.0.8, and 6.1.7 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be modified by a symbolic link is not extracted. This is, in part, achieved by ensuring that extracted directories are not symlinks. Additionally, in order to prevent unnecessary stat calls to determine whether a given path is a directory, paths are cached when directories are created. This logic was insufficient when extracting tar files that contained both a directory and a symlink with the same name as the directory, where the symlink and directory names in the archive entry used backslashes as a path separator on posix systems. The cache checking logic used both `\` and `/` characters as path separators, however `\` is a valid filename character on posix systems. By first creating a directory, and then replacing that directory with a symlink, it was thus possible to bypass node-tar symlink checks on directories, essentially allowing an untrusted tar file to symlink into an arbitrary location and subsequently extracting arbitrary files into that location, thus allowing arbitrary file creation and overwrite. Additionally, a similar confusion could arise on case-insensitive filesystems. If a tar archive contained a directory at `FOO`, followed by a symbolic link named `foo`, then on case-insensitive file systems, the creation of the symbolic link would remove the directory from the filesystem, but _not_ from the internal directory cache, as it would not be treated as a cache hit. A subsequent file entry within the `FOO` directory would then be placed in the target of the symbolic link, thinking that the directory had already been created. These issues were addressed in releases 4.4.16, 5.0.8 and 6.1.7. The v3 branch of node-tar has been deprecated and did not receive patches for these issues. If you are still using a v3 release we recommend you update to a more recent version of node-tar. If this is not possible, a workaround is available in the referenced GHSA-9r2w-394v-53qc. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| CVSS v3 Severity: | 8.2 High (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N) 7.1 High (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C)
7.1 High (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N/E:U/RL:O/RC:C)
7.1 High (REDHAT Temporal CVSS v3.1 Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H/E:U/RL:O/RC:C)
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| CVSS v2 Severity: | 4.4 Medium (CVSS v2 Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P)
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| Vulnerability Type: | CWE-22 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Vulnerability Consequences: | Gain Access | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| References: | Source: MITRE Type: CNA CVE-2021-37701 Source: security-advisories@github.com Type: Patch, Third Party Advisory security-advisories@github.com Source: XF Type: UNKNOWN nodejs-cve202137701-code-exec(208442) Source: CCN Type: GitHub Web site Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links Source: security-advisories@github.com Type: Patch, Third Party Advisory security-advisories@github.com Source: security-advisories@github.com Type: Mailing List, Third Party Advisory security-advisories@github.com Source: CCN Type: Node.js Blog, 2021-08-31 August 31 2021 Security Releases Source: security-advisories@github.com Type: Third Party Advisory security-advisories@github.com Source: CCN Type: IBM Security Bulletin 6492199 (Watson Discovery) IBM Watson Discovery for IBM Cloud Pak for Data affected by vulnerability in Node.js Source: CCN Type: IBM Security Bulletin 6509088 (InfoSphere Information Server) IBM InfoSphere Information Server is affected by multiple vulnerabilities in Node.js Source: CCN Type: IBM Security Bulletin 6514809 (Cloud Pak for Multicloud Management) A security vulnerability in Node.js tar module affects IBM Cloud Pak for Multicloud Management Managed Services Source: CCN Type: IBM Security Bulletin 6516790 (Rational Application Developer for WebSphere Software) Multiple vulnerabilities affect IBM Rational Application Developer for WebSphere Software - September 2021 Source: CCN Type: IBM Security Bulletin 6517470 (Planning Analytics) IBM Planning Analytics Workspace is affected by security vulnerabilities Source: CCN Type: IBM Security Bulletin 6520344 (Integration Bus) Vulnerabilities in Node.js affect IBM Integration Bus v10 (CVE-2021-37701) Source: CCN Type: IBM Security Bulletin 6541298 (Cloud Pak for Automation) Multiple security vulnerabilities fixed in Cloud Pak for Automation components Source: CCN Type: IBM Security Bulletin 6568343 (App Connect Enterprise Certified Container) Images built from IBM App Connect Enterprise Certified Containers may be vulnerable to arbitrary code execution due to CVE-2021-37701 Source: CCN Type: IBM Security Bulletin 6574477 (Cloud Private) Security Vulnerabilities affect IBM Cloud Private - Node.js (CVE-2021-37701) Source: CCN Type: IBM Security Bulletin 6575667 (Spectrum Discover) High severity vulnerabilities in libraries used by IBM Spectrum Discover (libraries of libraries) Source: CCN Type: IBM Security Bulletin 6589583 (QRadar Deployment Intelligence App) IBM QRadar Deployment Intelligence app for IBM QRadar SIEM is vulnerable to using components with known vulnerabilities Source: CCN Type: IBM Security Bulletin 6590981 (QRadar Data Synchronization App) IBM QRadar Data Synchronization App for IBM QRadar SIEM is vulnerable to using components with known vulnerabilities Source: CCN Type: IBM Security Bulletin 6602551 (Security Verify Governance) IBM Security Verify Governance is vulnerable to multiple security issues due to Node.js Source: CCN Type: IBM Security Bulletin 6612727 (Cloud Pak System Software) Multiple Vulnerabilities in Node.js affect IBM Cloud Pak System Source: CCN Type: IBM Security Bulletin 6825871 (Tivoli Netcool/OMNIbus_GUI) Multiple vulnerabilities in React, webpack and Node.js modules affect Tivoli Netcool/OMNIbus WebGUI Source: CCN Type: IBM Security Bulletin 6830017 (QRadar Pulse App) QRadar Pulse application add on to IBM QRadar SIEM is vulnerable to using components with known vulnerabilities Source: CCN Type: IBM Security Bulletin 6956539 (MobileFirst Platform Foundation) Multiple vulnerabilities found with third-party libraries used by IBM MobileFirst Platform Source: CCN Type: IBM Security Bulletin 6967283 (QRadar User Behavior Analytics) IBM QRadar User Behavior Analytics is vulnerable to components with known vulnerabilities Source: CCN Type: IBM Security Bulletin 6991615 (Edge Application Manager) Open Source Dependency Vulnerability Source: CCN Type: IBM Security Bulletin 7008939 (Security Verify Governance) Multiple vulnerabilities fixed in IBM Security Verify Governance - Identity Manager Virtual Appliance Source: CCN Type: NPM Web site tar Source: security-advisories@github.com Type: Product, Third Party Advisory security-advisories@github.com Source: security-advisories@github.com Type: Patch, Third Party Advisory security-advisories@github.com Source: CCN Type: WhiteSource Vulnerability Database CVE-2021-37701 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Vulnerable Configuration: | Configuration RedHat 1: Configuration CCN 1:  Denotes that component is vulnerable | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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