Vulnerability-Lookup

VAR-202104-0581

Vulnerability from variot - Updated: 2023-12-18 12:16

A local privilege escalation vulnerability in ethtraceroute of Juniper Networks Junos OS may allow a locally authenticated user with shell access to escalate privileges and write to the local filesystem as root. ethtraceroute is shipped with setuid permissions enabled and is owned by the root user, allowing local users to run ethtraceroute with root privileges. This issue affects Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D240; 17.3 versions prior to 17.3R3-S11, 17.4 versions prior to 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S7; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1. Juniper Networks Junos OS is a set of network operating system of Juniper Networks (Juniper Networks) dedicated to the company's hardware equipment. The operating system provides a secure programming interface and Junos SDK. There is a security vulnerability in Junos OS, and there is no relevant information about this vulnerability at present, please pay attention to CNNVD or manufacturer announcements at any time

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CVE-2021-0255 (GCVE-0-2021-0255)

Vulnerability from cvelistv5 – Published: 2021-04-22 19:37 – Updated: 2024-09-16 17:43

Title

Junos OS: ethtraceroute Local Privilege Escalation vulnerability in SUID binaries

Summary

Severity ?

5.5 (Medium)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

CWE

CWE-250 - Execution with Unnecessary Privileges

Assigner

juniper

References

URL

Tags

https://kb.juniper.net/JSA11175

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	Juniper Networks	Junos OS	Affected: 15.1X49 , < 15.1X49-D240 (custom) Affected: 17.3 , < 17.3R3-S11 (custom) Affected: 17.4 , < 17.4R3-S4 (custom) Affected: 18.1 , < 18.1R3-S12 (custom) Affected: 18.2 , < 18.2R3-S7 (custom) Affected: 18.3 , < 18.3R3-S4 (custom) Affected: 18.4 , < 18.4R2-S7 (custom) Affected: 19.1 , < 19.1R1-S6, 19.1R2-S2, 19.1R3-S4 (custom) Affected: 19.3 , < 19.3R3-S2 (custom) Affected: 19.4 , < 19.4R3-S1 (custom) Affected: 20.1 , < 20.1R2, 20.1R3 (custom) Affected: 20.2 , < 20.2R2-S1, 20.2R3 (custom) Affected: 20.3 , < 20.3R1-S1 (custom)

Date Public ?

2021-04-14 00:00

Credits

Juniper SIRT would like to acknowledge and thank Hoàng Thạch Nguyễn (d4rkn3ss) of STAR Labs for responsibly reporting this vulnerability.

Show details on NVD website

JSON

To clipboard

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                            "version_affected": "\u003c",
                            "version_name": "18.1",
                            "version_value": "18.1R3-S12"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "18.2",
                            "version_value": "18.2R3-S7"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "18.3",
                            "version_value": "18.3R3-S4"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "18.4",
                            "version_value": "18.4R2-S7"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "19.1",
                            "version_value": "19.1R1-S6, 19.1R2-S2, 19.1R3-S4"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "19.3",
                            "version_value": "19.3R3-S2"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "19.4",
                            "version_value": "19.4R3-S1"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "20.1",
                            "version_value": "20.1R2, 20.1R3"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "20.2",
                            "version_value": "20.2R2-S1, 20.2R3"
                          },
                          {
                            "version_affected": "\u003c",
                            "version_name": "20.3",
                            "version_value": "20.3R1-S1"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Juniper Networks"
              }
            ]
          }
        },
        "credit": [
          {
            "lang": "eng",
            "value": "Juniper SIRT would like to acknowledge and thank Ho\u00e0ng Th\u1ea1ch Nguy\u1ec5n (d4rkn3ss) of STAR Labs for responsibly reporting this vulnerability."
          }
        ],
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "A local privilege escalation vulnerability in ethtraceroute of Juniper Networks Junos OS may allow a locally authenticated user with shell access to escalate privileges and write to the local filesystem as root. ethtraceroute is shipped with setuid permissions enabled and is owned by the root user, allowing local users to run ethtraceroute with root privileges. This issue affects Juniper Networks Junos OS: 15.1X49 versions prior to 15.1X49-D240; 17.3 versions prior to 17.3R3-S11, 17.4 versions prior to 17.4R3-S4; 18.1 versions prior to 18.1R3-S12; 18.2 versions prior to 18.2R3-S7; 18.3 versions prior to 18.3R3-S4; 18.4 versions prior to 18.4R2-S7; 19.1 versions prior to 19.1R1-S6, 19.1R2-S2, 19.1R3-S4; 19.3 versions prior to 19.3R3-S2; 19.4 versions prior to 19.4R3-S1; 20.1 versions prior to 20.1R2, 20.1R3; 20.2 versions prior to 20.2R2-S1, 20.2R3; 20.3 versions prior to 20.3R1-S1."
            }
          ]
        },
        "exploit": [
          {
            "lang": "en",
            "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
          }
        ],
        "generator": {
          "engine": "Vulnogram 0.0.9"
        },
        "impact": {
          "cvss": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "NONE",
            "baseScore": 5.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N",
            "version": "3.1"
          }
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "CWE-250 Execution with Unnecessary Privileges"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://kb.juniper.net/JSA11175",
              "refsource": "MISC",
              "url": "https://kb.juniper.net/JSA11175"
            }
          ]
        },
        "solution": [
          {
            "lang": "en",
            "value": "The following software releases have been updated to resolve this specific issue: Junos OS 15.1X49-D240, 17.3R3-S11, 17.4R3-S4, 18.1R3-S12, 18.2R3-S7, 18.4R2-S7, 19.1R1-S6, 19.1R2-S2, 19.1R3-S4, 19.3R3-S2, 19.4R3-S1, 20.1R2, 20.1R3, 20.2R2-S1, 20.2R3, 20.3R1-S1, 21.1R1, and all subsequent releases.\n\nAs a proactive measure to tighten the security of other Ethernet OAM utilities, setuid was also removed from other binaries, including ethping, ethdm, ethslm and ethlm."
          }
        ],
        "source": {
          "advisory": "JSA11175",
          "defect": [
            "1529209"
          ],
          "discovery": "EXTERNAL"
        },
        "work_around": [
          {
            "lang": "en",
            "value": "To reduce the risk of malicious exploitation, use access lists or firewall filters to limit CLI access to the device only from trusted, administrative networks or hosts.  Additionally, limit access to the Junos OS shell to only trusted system administrators."
          }
        ]
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
    "assignerShortName": "juniper",
    "cveId": "CVE-2021-0255",
    "datePublished": "2021-04-22T19:37:16.105Z",
    "dateReserved": "2020-10-27T00:00:00.000Z",
    "dateUpdated": "2024-09-16T17:43:04.277Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

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.

Action not permitted

VAR-202104-0581

CVE-2021-0255 (GCVE-0-2021-0255)

Tags

Sightings

Nomenclature