Drupal core - SA-CORE-2020-013
The Drupal project uses the PEAR Archive_Tar library. The PEAR Archive_Tar library has released a security update that impacts Drupal. For more information please see:
Multiple vulnerabilities are possible if Drupal is configured to allow .tar, .tar.gz, .bz2, or .tlz file uploads and processes them.
To mitigate this issue, prevent untrusted users from uploading .tar, .tar.gz, .bz2, or .tlz files.
This is a different issue than SA-CORE-2019-012. Similar configuration changes may mitigate the problem until you are able to patch.
Affected software
Click a technology to see all vulnerabilities affecting it.
| Platform | Package | Vulnerable versions | Fixed in |
|---|---|---|---|
| Composer package | drupal/core | >= 8.0.0, < 8.8.12, >= 8.9.0, < 8.9.10, >= 9.0.0, < 9.0.9 | 8.8.12, 8.9.10, 9.0.9 |
| Composer package | pear/archive_tar | < 1.4.11 | 1.4.11 |
| Drupal (core) | drupal/core | >= 8.0.0, < 8.8.12, >= 8.9.0, < 8.9.10, >= 9.0.0, < 9.0.9 | 8.8.12, 8.9.10, 9.0.9 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2020-28949
- https://github.com/pear/Archive_Tar/issues/33
- https://github.com/pear/Archive_Tar/commit/0670a05fdab997036a3fc3ef113b8f5922e574da
- https://www.drupal.org/sa-core-2020-013
- https://www.debian.org/security/2020/dsa-4817
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2020-28949
- https://security.gentoo.org/glsa/202101-23
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/NBYZSHYTIOBK6V7C4N7TP6KIKCRKLVWP
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/4V35LBRM6HBCXBVCITKQ4UEBTXO2EG7B
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VJQQYDAOWHD6RDITDRPHFW7WY6BS3V5N
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NBYZSHYTIOBK6V7C4N7TP6KIKCRKLVWP
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KWM4CTMEGAC4I2CHYNJVSROY4CVXVEUT
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/5KSFM672XW3X6BR7TVKRD63SLZGKK437
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4V35LBRM6HBCXBVCITKQ4UEBTXO2EG7B
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/42GPGVVFTLJYAKRI75IVB5R45NYQGEUR
- https://lists.debian.org/debian-lts-announce/2020/11/msg00045.html
- https://github.com/pear/Archive_Tar
- https://github.com/FriendsOfPHP/security-advisories/blob/master/pear/archive_tar/CVE-2020-28949.yaml
- http://packetstormsecurity.com/files/161095/PEAR-Archive_Tar-Arbitrary-File-Write.html
- https://nvd.nist.gov/vuln/detail/CVE-2020-28948
- CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H- Weakness (CWE)
CWE-74, CWE-502- Platform
- Composer, Drupal
- Package
drupal/core, pear/archive_tar- Disclosed
- 25.11.2020
- Updated
- 11.10.2026 13:17
Sources and licenses
OSV / GitHub Advisory Database - GHSA-75c5-f4gw-38r9 - CC BY 4.0
OSV / GitHub Advisory Database - GHSA-jh5x-hfhg-78jq - CC BY 4.0
OSV / GitHub Advisory Database - DRUPAL-CORE-2020-013 - CC BY-SA 2.0; code GPL-2.0-or-later
Vulnerability history: pear/archive_tar
All published vulnerabilities of this package (Composer package), newest first. Shows whether this is a one-off slip or a package that needs watching.
- Total entries
- 5
- First → latest
- 11.2020 07.2023
- Without a fix
- 0
- Exploited in attacks
- 1
Severity breakdown
- Critical 1
- High 4
Disclosures per year
- 2020: 1
- 2021: 2
- 2022: 1
- 2023: 1
- 2024: 0
- 2025: 0
- 2026: 0
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