CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 0CVE-2021-39135 – UNIX Symbolic Link (Symlink) Following in @npmcli/arborist
https://notcve.org/view.php?id=CVE-2021-39135
`@npmcli/arborist`, the library that calculates dependency trees and manages the node_modules folder hierarchy for the npm command line interface, aims to guarantee that package dependency contracts will be met, and the extraction of package contents will always be performed into the expected folder. This is accomplished by extracting package contents into a project's `node_modules` folder. If the `node_modules` folder of the root project or any of its dependencies is somehow replaced with a symbolic link, it could allow Arborist to write package dependencies to any arbitrary location on the file system. Note that symbolic links contained within package artifact contents are filtered out, so another means of creating a `node_modules` symbolic link would have to be employed. 1. A `preinstall` script could replace `node_modules` with a symlink. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://github.com/npm/arborist/security/advisories/GHSA-gmw6-94gg-2rc2 https://www.npmjs.com/package/%40npmcli/arborist https://www.oracle.com/security-alerts/cpuoct2021.html • CWE-59: Improper Link Resolution Before File Access ('Link Following') CWE-61: UNIX Symbolic Link (Symlink) Following •
CVSS: 8.2EPSS: 0%CPEs: 5EXPL: 0CVE-2021-39134 – UNIX Symbolic Link (Symlink) Following in @npmcli/arborist
https://notcve.org/view.php?id=CVE-2021-39134
`@npmcli/arborist`, the library that calculates dependency trees and manages the `node_modules` folder hierarchy for the npm command line interface, aims to guarantee that package dependency contracts will be met, and the extraction of package contents will always be performed into the expected folder. This is, in part, accomplished by resolving dependency specifiers defined in `package.json` manifests for dependencies with a specific name, and nesting folders to resolve conflicting dependencies. When multiple dependencies differ only in the case of their name, Arborist's internal data structure saw them as separate items that could coexist within the same level in the `node_modules` hierarchy. However, on case-insensitive file systems (such as macOS and Windows), this is not the case. Combined with a symlink dependency such as `file:/some/path`, this allowed an attacker to create a situation in which arbitrary contents could be written to any location on the filesystem. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://github.com/npm/arborist/security/advisories/GHSA-2h3h-q99f-3fhc https://www.npmjs.com/package/%40npmcli/arborist https://www.oracle.com/security-alerts/cpuoct2021.html • CWE-61: UNIX Symbolic Link (Symlink) Following CWE-178: Improper Handling of Case Sensitivity •
CVSS: 8.6EPSS: 0%CPEs: 7EXPL: 0CVE-2021-37713 – Arbitrary File Creation/Overwrite on Windows via insufficient relative path sanitization
https://notcve.org/view.php?id=CVE-2021-37713
The npm package "tar" (aka node-tar) before versions 4.4.18, 5.0.10, and 6.1.9 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be outside of the extraction target directory is not extracted. This is, in part, accomplished by sanitizing absolute paths of entries within the archive, skipping archive entries that contain `..` path portions, and resolving the sanitized paths against the extraction target directory. This logic was insufficient on Windows systems when extracting tar files that contained a path that was not an absolute path, but specified a drive letter different from the extraction target, such as `C:some\path`. If the drive letter does not match the extraction target, for example `D:\extraction\dir`, then the result of `path.resolve(extractionDirectory, entryPath)` would resolve against the current working directory on the `C:` drive, rather than the extraction target directory. Additionally, a `..` portion of the path could occur immediately after the drive letter, such as `C:.. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://github.com/npm/node-tar/security/advisories/GHSA-5955-9wpr-37jh https://www.npmjs.com/package/tar https://www.oracle.com/security-alerts/cpuoct2021.html • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') •
CVSS: 8.6EPSS: 0%CPEs: 8EXPL: 0CVE-2021-37701 – Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links
https://notcve.org/view.php?id=CVE-2021-37701
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. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://github.com/npm/node-tar/security/advisories/GHSA-9r2w-394v-53qc https://lists.debian.org/debian-lts-announce/2022/12/msg00023.html https://www.debian.org/security/2021/dsa-5008 https://www.npmjs.com/package/tar https://www.oracle.com/security-alerts/cpuoct2021.html https://access.redhat.com/security/cve/CVE-2021-37701 https://bugzilla.redhat.com/show_bug.cgi?id=1999731 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-59: Improper Link Resolution Before File Access ('Link Following') •
CVSS: 8.6EPSS: 0%CPEs: 9EXPL: 0CVE-2021-37712 – Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links
https://notcve.org/view.php?id=CVE-2021-37712
The npm package "tar" (aka node-tar) before versions 4.4.18, 5.0.10, and 6.1.9 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 names containing unicode values that normalized to the same value. Additionally, on Windows systems, long path portions would resolve to the same file system entities as their 8.3 "short path" counterparts. • https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf https://github.com/npm/node-tar/security/advisories/GHSA-qq89-hq3f-393p https://lists.debian.org/debian-lts-announce/2022/12/msg00023.html https://www.debian.org/security/2021/dsa-5008 https://www.npmjs.com/package/tar https://www.oracle.com/security-alerts/cpuoct2021.html https://access.redhat.com/security/cve/CVE-2021-37712 https://bugzilla.redhat.com/show_bug.cgi?id=1999739 • CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') CWE-59: Improper Link Resolution Before File Access ('Link Following') •