vulnwire
9.1crit

CVE-2018-8780

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 a…

Published 8 y ago · modified 4 mo ago · JSON

CVSS
9.1
v3.0 · NVD
CISA KEV
No
not known exploited
EPSS
10.0%
percentile 96%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

9.98% probability of exploitation in the next 30 days, higher than 96% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.09.1CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness
  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

  • ruby-lang.org /en/news/2018/03/28/ruby-2-5-1-released/ · x_refsource_CONFIRM, x_transferred
  • access.redhat.com /errata/RHSA-2018:3729 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • usn.ubuntu.com /3626-1/ · vendor-advisory, x_refsource_UBUNTU, x_transferred
  • securitytracker.com /id/1042004 · vdb-entry, x_refsource_SECTRACK, x_transferred
  • access.redhat.com /errata/RHSA-2018:3730 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • lists.debian.org /debian-lts-announce/2018/04/msg00023.html · mailing-list, x_refsource_MLIST, x_transferred
  • access.redhat.com /errata/RHSA-2018:3731 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • ruby-lang.org /en/news/2018/03/28/ruby-2-3-7-released/ · x_refsource_CONFIRM, x_transferred
  • ruby-lang.org /en/news/2018/03/28/poisoned-nul-byte-dir-cve-2018-8780/ · x_refsource_CONFIRM, x_transferred
  • lists.debian.org /debian-lts-announce/2018/07/msg00012.html · mailing-list, x_refsource_MLIST, x_transferred
  • securityfocus.com /bid/103739 · vdb-entry, x_refsource_BID, x_transferred
  • ruby-lang.org /en/news/2018/03/28/ruby-2-4-4-released/ · x_refsource_CONFIRM, x_transferred
  • debian.org /security/2018/dsa-4259 · vendor-advisory, x_refsource_DEBIAN, x_transferred
  • ruby-lang.org /en/news/2018/03/28/ruby-2-2-10-released/ · x_refsource_CONFIRM, x_transferred
  • lists.debian.org /debian-lts-announce/2018/04/msg00024.html · mailing-list, x_refsource_MLIST, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2019-07/msg00036.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • access.redhat.com /errata/RHSA-2019:2028 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2020:0542 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2020:0591 · vendor-advisory, x_refsource_REDHAT, x_transferred
  • access.redhat.com /errata/RHSA-2020:0663 · vendor-advisory, x_refsource_REDHAT, x_transferred

Sources

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