Arbitrary file upload in Rubyzip Project
CVE-2018-1000544
rubyzip gem rubyzip version 1.2.1 and earlier contains a Directory Traversal vulnerability in Zip::File component that can result in write arbitrary files to the filesystem. This attack appear to be exploitable via If a site allows uploading of .zip files , an attacker can upload a malicious file that contains symlinks or files with absolute pathnames "../" to write arbitrary files to the filesystem..
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.044 (91.2th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.044 · newest: 0.044 · change: 0.000
Affected products
- Rubyzip Project
- Debian Linux — versions 8.0, 9.0
- Red Hat Cloudforms — versions 4.6
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/rubyzip/rubyzip/issues/369 (Exploit, Third Party Advisory)
- access.redhat.com/errata/RHSA-2018:3466 (vendor-advisory, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2018/08/msg00013.html (mailing-list, Mailing List, Third Party Advisory)
- lists.debian.org/debian-lts-announce/2020/08/msg00002.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2018-1000544?
- CVE-2018-1000544 is a critical-severity vulnerability in Rubyzip Project, classified under Improper Link Resolution Before File Access. CVSS score: 9.8/10. Published 2018-06-26.
- How severe is CVE-2018-1000544?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2018-1000544 known to be exploited?
- 5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.