VulnerabilityModified
CVE-2018-8780
When using the corresponding method, unintentional directory traversal may be performed.
CRITICAL 9.1EPSS 9.72%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (9.72%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
In Ruby before 2.2.10, 2.3.x before 2.3.7, 2.4.x before 2.4.4, 2.5.x before 2.5.1, and 2.6.0-preview1, the Dir.open, Dir.new, Dir.entries and Dir.empty? methods do not check NULL characters. When using the corresponding method, unintentional directory traversal may be performed.
- CVSS 3.0
- 9.1 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- EPSS
- 9.72% probability · 95th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- ruby-lang/ruby · canonical/ubuntu linux · debian/debian linux
- Source
- cve@mitre.org
References
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- http://www.securityfocus.com/bid/103739Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042004Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3729Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3730Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3731Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2028
- https://access.redhat.com/errata/RHSA-2020:0542
- https://access.redhat.com/errata/RHSA-2020:0591
- https://access.redhat.com/errata/RHSA-2020:0663
- https://lists.debian.org/debian-lts-announce/2018/04/msg00023.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/04/msg00024.htmlMailing List, Third Party Advisory
- https://lists.debian.org/debian-lts-announce/2018/07/msg00012.htmlMailing List, Third Party Advisory
- https://usn.ubuntu.com/3626-1/Third Party Advisory
- https://www.debian.org/security/2018/dsa-4259Third Party Advisory
- https://www.ruby-lang.org/en/news/2018/03/28/poisoned-nul-byte-dir-cve-2018-8780/Vendor Advisory
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/Patch, Vendor Advisory
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-3-7-released/Patch, Vendor Advisory
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-4-4-released/Patch, Vendor Advisory
- https://www.ruby-lang.org/en/news/2018/03/28/ruby-2-5-1-released/Patch, Vendor Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00036.html
- http://www.securityfocus.com/bid/103739Third Party Advisory, VDB Entry
- http://www.securitytracker.com/id/1042004Third Party Advisory, VDB Entry
- https://access.redhat.com/errata/RHSA-2018:3729Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3730Third Party Advisory
- https://access.redhat.com/errata/RHSA-2018:3731Third Party Advisory
- https://access.redhat.com/errata/RHSA-2019:2028
- https://access.redhat.com/errata/RHSA-2020:0542
- https://access.redhat.com/errata/RHSA-2020:0591
- https://access.redhat.com/errata/RHSA-2020:0663
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.