CVE-2020-28948
HIGHCVSS 7.8/10EPSS 47.49%
Last modified
CVE-2020-28948 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.. EPSS estimates a 47.49% chance of exploitation in the next 30 days.
Description
Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.
Metrics
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Php | Archive Tar | < 1.4.11 |
| Debian | Debian Linux | 9.0 |
| Debian | Debian Linux | 10.0 |
| Fedoraproject | Fedora | 32 |
| Fedoraproject | Fedora | 33 |
| Fedoraproject | Fedora | 34 |
| Fedoraproject | Fedora | 35 |
| Drupal | Drupal | >= 7.0, < 7.75 |
| Drupal | Drupal | >= 8.0.0, < 8.9.10 |
| Drupal | Drupal | >= 8.8.0, < 8.8.12 |
| Drupal | Drupal | >= 9.0.0, < 9.0.9 |
References
- https://github.com/pear/Archive_Tar/issues/33Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00045.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202101-23Third Party Advisory
- https://www.debian.org/security/2020/dsa-4817Third Party Advisory
- https://www.drupal.org/sa-core-2020-013Third Party Advisory
- https://github.com/pear/Archive_Tar/issues/33Exploit, Issue Tracking, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2020/11/msg00045.htmlMailing List, Third Party Advisory
- https://security.gentoo.org/glsa/202101-23Third Party Advisory
- https://www.debian.org/security/2020/dsa-4817Third Party Advisory
- https://www.drupal.org/sa-core-2020-013Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2020-28948?
Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.
How severe is CVE-2020-28948?
CVE-2020-28948 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 47.49% probability of exploitation in the next 30 days.
How do I fix CVE-2020-28948?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
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Are you affected by CVE-2020-28948?
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