Vulnerability-Lookup

CVE-2017-17790 (GCVE-0-2017-17790)

Vulnerability from cvelistv5 – Published: 2017-12-20 09:00 – Updated: 2024-08-05 20:59

Summary

The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a '|' character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.

Severity

9.8 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Assigner

mitre mitre root

References

9 references

URL	Tags
https://access.redhat.com/errata/RHSA-2018:0585	vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2017…	mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:0378	vendor-advisoryx_refsource_REDHAT
https://github.com/ruby/ruby/pull/1777	x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:0584	vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://access.redhat.com/errata/RHSA-2018:0583	vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2017…	mailing-listx_refsource_MLIST
https://www.debian.org/security/2018/dsa-4259	vendor-advisoryx_refsource_DEBIAN

Date Public

2017-12-20 00:00

Show details on NVD website

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              "exploitabilityScore": 3.9,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2017-12-20T09:29:01.477",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2018:0378"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2018:0583"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2018:0584"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://access.redhat.com/errata/RHSA-2018:0585"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://github.com/ruby/ruby/pull/1777"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
          },
          {
            "source": "cve@mitre.org",
            "url": "https://www.debian.org/security/2018/dsa-4259"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2018:0378"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2018:0583"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2018:0584"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://access.redhat.com/errata/RHSA-2018:0585"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
              "Exploit",
              "Issue Tracking",
              "Third Party Advisory"
            ],
            "url": "https://github.com/ruby/ruby/pull/1777"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00024.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2017/12/msg00025.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://lists.debian.org/debian-lts-announce/2018/07/msg00012.html"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.debian.org/security/2018/dsa-4259"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-74"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-06-28T06:40:04+00:00",
      "cve": "CVE-2017-17790",
      "id": "CVE-2017-17790",
      "initial_release_date": "2017-12-19T00:00:00+00:00",
      "product_status:fixed": "576",
      "product_status:known_affected": "14",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "ruby: Command injection in lib/resolv.rb:lazy_initialize() allows arbitrary code execution",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2017/cve-2017-17790.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T01:56:11Z",
      "cve": "CVE-2017-17790",
      "id": "CVE-2017-17790",
      "initial_release_date": "2023-02-15T04:36:32Z",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "113",
      "product_status:recommended": "98",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2017-17790",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2017-17790.json",
      "version": "15"
    }
  }
}

RHSA-2018:0585

Vulnerability from csaf_redhat - Published: 2018-03-26 10:20 - Updated: 2026-06-28 12:31

Summary

Red Hat Security Advisory: rh-ruby23-ruby security, bug fix, and enhancement update

Severity

Important

Scope

11 vulnerabilities in this advisory, including CVE-2017-17790.

CVE-2017-17790

The "lazy_initialize" function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands.

8.1 (High)


                
                  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 147 products

https://access.redhat.com/errata/RHSA-2018:0585

Open the full advisory

RHSA-2018_0378

Vulnerability from csaf_redhat - Published: 2018-02-28 20:06 - Updated: 2024-11-22 11:43

Summary

Red Hat Security Advisory: ruby security update

Severity

Important

Scope

11 vulnerabilities in this advisory, including CVE-2017-17790.

CVE-2017-17790

The "lazy_initialize" function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands.

8.1 (High)


                
                  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 590 products

https://access.redhat.com/errata/RHSA-2018:0378

Open the full advisory

RHSA-2018_0583

Vulnerability from csaf_redhat - Published: 2018-03-26 09:39 - Updated: 2024-11-22 11:43

Summary

Red Hat Security Advisory: rh-ruby22-ruby security, bug fix, and enhancement update

Severity

Important

Scope

13 vulnerabilities in this advisory, including CVE-2017-17790.

CVE-2017-17790

The "lazy_initialize" function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands.

8.1 (High)


                
                  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 133 products

https://access.redhat.com/errata/RHSA-2018:0583

Open the full advisory

RHSA-2018_0584

Vulnerability from csaf_redhat - Published: 2018-03-26 10:01 - Updated: 2024-11-14 22:42

Summary

Red Hat Security Advisory: rh-ruby24-ruby security, bug fix, and enhancement update

Severity

Important

Scope

2 vulnerabilities in this advisory, including CVE-2017-17790.

CVE-2017-17790

The "lazy_initialize" function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands.

8.1 (High)


                
                  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 154 products

https://access.redhat.com/errata/RHSA-2018:0584

Open the full advisory

RHSA-2018_0585

Vulnerability from csaf_redhat - Published: 2018-03-26 10:20 - Updated: 2024-11-22 11:43

Summary

Red Hat Security Advisory: rh-ruby23-ruby security, bug fix, and enhancement update

Severity

Important

Scope

11 vulnerabilities in this advisory, including CVE-2017-17790.

CVE-2017-17790

The "lazy_initialize" function in lib/resolv.rb did not properly process certain filenames. A remote attacker could possibly exploit this flaw to inject and execute arbitrary commands.

8.1 (High)


                
                  CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Fixed: 147 products

https://access.redhat.com/errata/RHSA-2018:0585

Open the full advisory

SUSE-SU-2020:1570-1

Vulnerability from csaf_suse - Published: 2020-06-09 09:16 - Updated: 2020-06-09 09:16

Summary

Security update for ruby2.1

Severity

Important

Scope

42 vulnerabilities in this advisory, including CVE-2017-17790.

CVE-2017-17790

5.3 (Medium)


                
                  CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L

Recommended: 124 products

Open the full advisory

UBUNTU-CVE-2017-17790 (CVE-2017-17790)

Vulnerability from osv_ubuntu – Published: 2017-12-20 00:00 – Updated: 2026-04-22 07:38 – Source website

Details

Severity

9.8 (Critical)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2017-17790	REPORT
	https://github.com/ruby/ruby/pull/1777	REPORT
	https://ubuntu.com/security/notices/USN-3528-1	ADVISORY
	https://www.cve.org/CVERecord?id=CVE-2017-17790	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libruby1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          },
          {
            "binary_name": "libtcltk-ruby1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          },
          {
            "binary_name": "ri1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          },
          {
            "binary_name": "ruby1.9.1",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          },
          {
            "binary_name": "ruby1.9.1-examples",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          },
          {
            "binary_name": "ruby1.9.1-full",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          },
          {
            "binary_name": "ruby1.9.3",
            "binary_version": "1.9.3.484-2ubuntu1.7"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "ruby1.9.1",
        "purl": "pkg:deb/ubuntu/ruby1.9.1@1.9.3.484-2ubuntu1.7?arch=source\u0026distro=trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.9.3.484-2ubuntu1.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.9.3.194-8.1ubuntu2",
        "1.9.3.448-1ubuntu1",
        "1.9.3.448-1ubuntu2",
        "1.9.3.484-1ubuntu1",
        "1.9.3.484-1ubuntu2",
        "1.9.3.484-2ubuntu1",
        "1.9.3.484-2ubuntu1.1",
        "1.9.3.484-2ubuntu1.2",
        "1.9.3.484-2ubuntu1.3",
        "1.9.3.484-2ubuntu1.5",
        "1.9.3.484-2ubuntu1.6"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libruby2.3",
            "binary_version": "2.3.1-2~16.04.5"
          },
          {
            "binary_name": "ruby2.3",
            "binary_version": "2.3.1-2~16.04.5"
          },
          {
            "binary_name": "ruby2.3-tcltk",
            "binary_version": "2.3.1-2~16.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "ruby2.3",
        "purl": "pkg:deb/ubuntu/ruby2.3@2.3.1-2~16.04.5?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.3.1-2~16.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2.3.0-1",
        "2.3.0-2",
        "2.3.0-4ubuntu2",
        "2.3.0-4ubuntu3",
        "2.3.0-5ubuntu1",
        "2.3.1-2~16.04",
        "2.3.1-2~16.04.2",
        "2.3.1-2~16.04.4"
      ]
    }
  ],
  "aliases": [],
  "details": "The lazy_initialize function in lib/resolv.rb in Ruby through 2.4.3 uses Kernel#open, which might allow Command Injection attacks, as demonstrated by a Resolv::Hosts::new argument beginning with a \u0027|\u0027 character, a different vulnerability than CVE-2017-17405. NOTE: situations with untrusted input may be highly unlikely.",
  "id": "UBUNTU-CVE-2017-17790",
  "modified": "2026-04-22T07:38:26Z",
  "published": "2017-12-20T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-17790"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/ruby/ruby/pull/1777"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3528-1"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2017-17790"
    }
  ],
  "related": [
    "USN-3528-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2017-17790"
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2017-17790 (GCVE-0-2017-17790)

RHSA-2018:0585

RHSA-2018_0378

RHSA-2018_0583

RHSA-2018_0584

RHSA-2018_0585

SUSE-SU-2020:1570-1

UBUNTU-CVE-2017-17790 (CVE-2017-17790)

Tags

Sightings

Nomenclature

Related by attack behaviour