Vulnerability in Drupal
CVE-2020-28949
Archive_Tar through 1.4.10 has :// filename sanitization only to address phar attacks, and thus any other stream-wrapper attack (such as file:// to overwrite files) can still succeed.
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: 0.846 (99.7th percentile), scored .
High probability of exploitation in the next 30 days — patch promptly. 100th percentile — 99.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.846 · newest: 0.846 · change: 0.000
Affected products
- Drupal
- PHP Archive Tar
- Debian Linux — versions 9.0, 10.0
- Fedoraproject Fedora — versions 32, 33, 34
CISA KEV (Known Exploited Vulnerabilities)
This CVE is on the CISA KEV catalog, added on . CISA KEV inclusion means CISA has confirmed in-the-wild exploitation; US federal agencies are required to remediate within a published due date.
BOD 22-01 due date: .
Required action: Apply updates per vendor instructions.
Public proof-of-concept exploits
References
- github.com/pear/Archive_Tar/issues/33 (Exploit, Issue Tracking, Vendor Advisory)
- 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, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/… (vendor-advisory, Mailing List, Third Party Advisory)
- www.debian.org/security/2020/dsa-4817 (vendor-advisory, Mailing List, Third Party Advisory)
- packetstormsecurity.com/files/161095/PEAR-Archive_Tar-Arbitrary-File-Write.html (Exploit, VDB Entry, Third Party Advisory)
- security.gentoo.org/glsa/202101-23 (vendor-advisory, Third Party Advisory)
Frequently asked questions
- What is CVE-2020-28949?
- CVE-2020-28949 is a high-severity vulnerability in Drupal. CVSS score: 7.8/10. Published 2020-11-19.
- How severe is CVE-2020-28949?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2020-28949 known to be exploited?
- Yes. CVE-2020-28949 is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-08-25), indicating it is being actively exploited. 17 public proof-of-concept repositories are indexed.