Deserialization in Drupal
CVE-2020-28948
Archive_Tar through 1.4.10 allows an unserialization attack because phar: is blocked but PHAR: is not blocked.
Vulnerability class: Insecure Deserialization
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.475 (98.8th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 99th percentile — 98.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.475 · newest: 0.475 · change: 0.000
Affected products
- Drupal
- PHP Archive Tar
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 32, 33, 34
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/pear/Archive_Tar/issues/33 (Exploit, Third Party Advisory, Issue Tracking)
- www.drupal.org/sa-core-2020-013 (Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/11/msg00045.html (mailing-list, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
- www.debian.org/security/2020/dsa-4817 (vendor-advisory, Third Party Advisory)
- security.gentoo.org/glsa/202101-23 (vendor-advisory, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory)
Frequently asked questions
- What is CVE-2020-28948?
- CVE-2020-28948 is a high-severity vulnerability in Drupal, classified under Deserialization of Untrusted Data. CVSS score: 7.8/10. Published 2020-11-19.
- How severe is CVE-2020-28948?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-28948 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.