Oracle Linux 8 : nodejs:12 (ELSA-2021-3623)

critical Nessus Plugin ID 153566
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The remote Oracle Linux host is missing one or more security updates.


The remote Oracle Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2021-3623 advisory.

- c-ares: Missing input validation of host names may lead to domain hijacking (CVE-2021-3672)

- nodejs: Use-after-free on close http2 on stream canceling (CVE-2021-22930)

- Node.js before 16.6.0, 14.17.4, and 12.22.4 is vulnerable to Remote Code Execution, XSS, Application crashes due to missing input validation of host names returned by Domain Name Servers in Node.js dns library which can lead to output of wrong hostnames (leading to Domain Hijacking) and injection vulnerabilities in applications using the library. (CVE-2021-22931)

- If the Node.js https API was used incorrectly and undefined was in passed for the rejectUnauthorized parameter, no error was returned and connections to servers with an expired certificate would have been accepted. (CVE-2021-22939)

- Node.js before 16.6.1, 14.17.5, and 12.22.5 is vulnerable to a use after free attack where an attacker might be able to exploit the memory corruption, to change process behavior. (CVE-2021-22940)

- The npm package tar (aka node-tar) before versions 6.1.2, 5.0.7, 4.4.15, and 3.2.3 has an arbitrary File Creation/Overwrite vulnerability via insufficient symlink protection. `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. This order of operations resulted in the directory being created and added to the `node-tar` directory cache. When a directory is present in the directory cache, subsequent calls to mkdir for that directory are skipped. However, this is also where `node-tar` checks for symlinks occur. 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. This issue was addressed in releases 3.2.3, 4.4.15, 5.0.7 and 6.1.2. (CVE-2021-32803)

- The npm package tar (aka node-tar) before versions 6.1.1, 5.0.6, 4.4.14, and 3.3.2 has a arbitrary File Creation/Overwrite vulnerability due to insufficient absolute path sanitization. node-tar aims to prevent extraction of absolute file paths by turning absolute paths into relative paths when the `preservePaths` flag is not set to `true`. This is achieved by stripping the absolute path root from any absolute file paths contained in a tar file. For example `/home/user/.bashrc` would turn into `home/user/.bashrc`. This logic was insufficient when file paths contained repeated path roots such as `////home/user/.bashrc`.
`node-tar` would only strip a single path root from such paths. When given an absolute file path with repeating path roots, the resulting path (e.g. `///home/user/.bashrc`) would still resolve to an absolute path, thus allowing arbitrary file creation and overwrite. This issue was addressed in releases 3.2.2, 4.4.14, 5.0.6 and 6.1.1. Users may work around this vulnerability without upgrading by creating a custom `onentry` method which sanitizes the `entry.path` or a `filter` method which removes entries with absolute paths. See referenced GitHub Advisory for details. Be aware of CVE-2021-32803 which fixes a similar bug in later versions of tar. (CVE-2021-32804)

- All versions of package path-parse are vulnerable to Regular Expression Denial of Service (ReDoS) via splitDeviceRe, splitTailRe, and splitPathRe regular expressions. ReDoS exhibits polynomial worst-case time complexity. (CVE-2021-23343)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.


Update the affected packages.

See Also

Plugin Details

Severity: Critical

ID: 153566

File Name: oraclelinux_ELSA-2021-3623.nasl

Version: 1.2

Type: local

Agent: unix

Published: 9/22/2021

Updated: 9/22/2021

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2021-22931


Risk Factor: Medium

Score: 6.7


Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C


Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:o:oracle:linux:8:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:nodejs:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:nodejs-devel:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:nodejs-docs:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:nodejs-full-i18n:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:nodejs-nodemon:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:nodejs-packaging:*:*:*:*:*:*:*, p-cpe:2.3:a:oracle:linux:npm:*:*:*:*:*:*:*

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 9/22/2021

Vulnerability Publication Date: 5/4/2021

Reference Information

CVE: CVE-2021-23343, CVE-2021-32804, CVE-2021-32803, CVE-2021-22930, CVE-2021-3672, CVE-2021-22931, CVE-2021-22940, CVE-2021-22939

IAVB: 2021-B-0050