CVE-2021-37712
Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links
02 Description
Arbitrary File Creation/Overwrite via insufficient symlink protection due to directory cache poisoning using symbolic links
03 Exploitation and scoring
- Exploitation
- Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
- SSVC decision
- Not assessed by CISA
- EPSS probability
- 1.86% probability of exploitation activity in the next 30 days.
- EPSS percentile
- Equal to or higher than the score of 79.0% of scored records. A rank, not a probability.
- NVD base score
- 8.6 (CVSS v3.x), scored by the NVD independently of the CNA.
- NVD CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
- NVD analysis status
- Modified. NVD last modified this record on 2026-06-17.
- Red Hat severity
- Moderate. Red Hat's rating for its own products, not a CVSS rating.
Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.
04 Metadata
- Published
- 2021-08-31 00:00Z5 YR AGO
- Last updated
- 2024-08-04 01:23Z2 YR AGO
- Reserved
- 2021-07-29
- Assigning CNA
- GitHub_M
- Record state
- PUBLISHED
- Severity
- High (CVSS 8.2)
- CNA CVSS vector
- CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
- Weaknesses
- Data version
- 5.1
- Document digest
- 350e3c823082feb82bccc0cc368bebd3372dcb3e01edc3f4670890edeadca6e0
05 Affected products
06 References
- www.npmjs.comhttps://www.npmjs.com/package/tar
- github.comhttps://github.com/npm/node-tar/security/advisories/GHSA-qq89-hq3f-393p
- www.oracle.comhttps://www.oracle.com/security-alerts/cpuoct2021.html
- www.debian.orgDSA-5008https://www.debian.org/security/2021/dsa-5008
- cert-portal.siemens.comhttps://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- lists.debian.org[debian-lts-announce] 20221212 [SECURITY] [DLA 3237-1] node-tar security updatehttps://lists.debian.org/debian-lts-announce/2022/12/msg00023.html
07 Fixed in
AlmaLinux 8
- nodejs Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-devel Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-docs Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-full-i18n Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-nodemon Fixed
A version is affected if any line below covers it.
- Affected before 2.0.15-1.module_el8.5.0+2605+45d748af
- Affected before 2.0.15-1.module_el8.5.0+2618+8d46dafd
- Affected before 2.0.15-1.module_el8.6.0+2904+f21ad6f4
- nodejs-packaging Fixed
A version is affected if any line below covers it.
- Affected before 23-3.module_el8.4.0+2522+3bd42762
- Affected before 23-3.module_el8.5.0+2618+8d46dafd
- npm Fixed
A version is affected if any line below covers it.
- Affected before 1:6.14.15-1.14.18.2.2.module_el8.5.0+254+b4526b16
- Affected before 1:6.14.15-1.14.18.2.2.module_el8.5.0+2618+8d46dafd
Source: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
CloudLinux 8
- nodejs Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-devel Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-docs Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-full-i18n Fixed
A version is affected if any line below covers it.
- Affected before 1:14.18.2-2.module_el8.5.0+254+b4526b16
- Affected before 1:14.18.2-2.module_el8.5.0+2618+8d46dafd
- nodejs-nodemon Fixed
A version is affected if any line below covers it.
- Affected before 2.0.15-1.module_el8.5.0+2605+45d748af
- Affected before 2.0.15-1.module_el8.5.0+2618+8d46dafd
- Affected before 2.0.15-1.module_el8.6.0+2904+f21ad6f4
- nodejs-packaging Fixed
A version is affected if any line below covers it.
- Affected before 23-3.module_el8.4.0+2522+3bd42762
- Affected before 23-3.module_el8.5.0+2618+8d46dafd
- npm Fixed
A version is affected if any line below covers it.
- Affected before 1:6.14.15-1.14.18.2.2.module_el8.5.0+254+b4526b16
- Affected before 1:6.14.15-1.14.18.2.2.module_el8.5.0+2618+8d46dafd
Derived from AlmaLinux 8. Partial coverage: only packages taken from AlmaLinux 8 are listed.
Source: CloudLinux errata, CloudLinux Inc. Derived from: AlmaLinux, AlmaLinux OS. Copyright (c) 2023 AlmaLinux OS. Licensed under MIT License. Received through OSV.dev. Reformatted by exploit.cc.
Debian 12
- node-tar Fixed in 6.1.11+~cs11.3.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 13
- node-tar Fixed in 6.1.11+~cs11.3.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Debian 14
- node-tar Fixed in 6.1.11+~cs11.3.10-1
Source: Debian Security Tracker, the Debian security team. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 18.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 22.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 24.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 25.10
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu 26.10
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 14.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 16.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
Ubuntu Pro 20.04 LTS
- node-tar No fix yet
Source: Ubuntu, Canonical Ltd. Licensed under CC BY-SA 4.0. Received through OSV.dev. Reformatted by exploit.cc.
A release or ecosystem missing from this list has no record here. It may be unaffected or not covered by the source. Source notices and licences.