Upstream information

CVE-2021-32803 at MITRE

Description

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.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v2 Scores
  National Vulnerability Database
Base Score 5.8
Vector AV:N/AC:M/Au:N/C:N/I:P/A:P
Access Vector Network
Access Complexity Medium
Authentication None
Confidentiality Impact None
Integrity Impact Partial
Availability Impact Partial
CVSS v3 Scores
  National Vulnerability Database SUSE
Base Score 8.1 8.1
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H
Access Vector Network Network
Access Complexity Low Low
Privileges Required None None
User Interaction Required Required
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact High High
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entries: 1191962 [NEW], 1191963 [NEW]

No SUSE Security Announcements cross referenced.


Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification.

Product(s) Source package State
SUSE CaaS Platform 4.0 nodejs10 Affected
SUSE CaaS Platform 4.0 nodejs8 Affected
SUSE Enterprise Storage 6 nodejs10 Affected
SUSE Enterprise Storage 6 nodejs8 Affected
SUSE Linux Enterprise High Performance Computing 15 LTSS nodejs10 Affected
SUSE Linux Enterprise High Performance Computing 15 LTSS nodejs8 Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS nodejs10 Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 ESPOS nodejs8 Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS nodejs10 Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 LTSS nodejs8 Affected
SUSE Linux Enterprise Module for Web and Scripting 12 nodejs10 Affected
SUSE Linux Enterprise Module for Web and Scripting 12 nodejs12 Not affected
SUSE Linux Enterprise Module for Web and Scripting 12 nodejs14 Not affected
SUSE Linux Enterprise Module for Web and Scripting 12 nodejs4 Not affected
SUSE Linux Enterprise Module for Web and Scripting 12 nodejs6 Not affected
SUSE Linux Enterprise Module for Web and Scripting 15 SP2 nodejs10 Affected
SUSE Linux Enterprise Module for Web and Scripting 15 SP2 nodejs12 Not affected
SUSE Linux Enterprise Module for Web and Scripting 15 SP2 nodejs14 Not affected
SUSE Linux Enterprise Module for Web and Scripting 15 SP2 nodejs8 Affected
SUSE Linux Enterprise Module for Web and Scripting 15 SP3 nodejs12 Not affected
SUSE Linux Enterprise Module for Web and Scripting 15 SP3 nodejs14 Not affected
SUSE Linux Enterprise Server 15 ESPOS nodejs10 Affected
SUSE Linux Enterprise Server 15 ESPOS nodejs8 Affected
SUSE Linux Enterprise Server 15 LTSS nodejs10 Affected
SUSE Linux Enterprise Server 15 LTSS nodejs8 Affected
SUSE Linux Enterprise Server 15 SP1 LTSS nodejs10 Affected
SUSE Linux Enterprise Server 15 SP1 LTSS nodejs8 Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 nodejs10 Affected
SUSE Linux Enterprise Server Business Critical Linux 15 SP1 nodejs8 Affected
SUSE Linux Enterprise Server for SAP Applications 15 nodejs10 Affected
SUSE Linux Enterprise Server for SAP Applications 15 nodejs8 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 nodejs10 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 nodejs8 Affected
SUSE OpenStack Cloud Crowbar 8 nodejs6 Not affected
SUSE OpenStack Cloud Crowbar 9 nodejs6 Not affected