FKIE_CVE-2026-104115

Vulnerability from fkie_nvd - Published: 2026-10-09 15:17 - Updated: 2026-10-09 16:35
Severity
5.4 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
Summary
A stack-based buffer overflow in the illumos reparse point daemon (reparsed) allows a local user to crash the daemon. get_fs_locations() in usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c, part of the nfs-basic reparse plugin, copies the host and path components of a reparse string into a fixed 1024-byte stack buffer without checking their length. The reparsed door at /var/run/reparsed_door is readable by all users and the door server does not check the caller's credentials, so an unprivileged local user can send an nfs-basic request with an overlong host or path component to overflow the buffer. On systems built with stack protection, which is the default, this causes reparsed to abort; repeated requests place the svc:/system/filesystem/reparse service into maintenance. The service is disabled by default. The flaw has existed since 2009 (illumos-gate commit 2f172c55), and affects any illumos distribution prior to illumos-gate commit 6a2df4aa.
References
0ca53633-f0b5-4853-ba72-e0a2e62000d0https://github.com/illumos/illumos-gate/commit/6a2df4aa5381599179ab6afb3165db81960dee35
0ca53633-f0b5-4853-ba72-e0a2e62000d0https://illumos.org/issues/18496
0ca53633-f0b5-4853-ba72-e0a2e62000d0https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://illumos.org",
          "defaultStatus": "unaffected",
          "packageName": "service/file-system/nfs",
          "platforms": [
            "x86"
          ],
          "product": "illumos-gate",
          "programFiles": [
            "usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c",
            "usr/src/cmd/fs.d/reparsed/reparsed.c"
          ],
          "repo": "https://github.com/illumos/illumos-gate",
          "vendor": "illumos",
          "versions": [
            {
              "changes": [
                {
                  "at": "6a2df4aa5381599179ab6afb3165db81960dee35",
                  "status": "unaffected"
                }
              ],
              "lessThan": "6a2df4aa5381599179ab6afb3165db81960dee35",
              "status": "affected",
              "version": "2f172c55ef76964744bc62b4500ece87f3089b4d",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "OmniOS",
          "vendor": "OmniOS",
          "versions": [
            {
              "lessThan": "r151054",
              "status": "affected",
              "version": "any",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "r151058w",
                  "status": "unaffected"
                }
              ],
              "lessThan": "r151058w",
              "status": "affected",
              "version": "r151058",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "r151056aw",
                  "status": "unaffected"
                }
              ],
              "lessThan": "r151056aw",
              "status": "affected",
              "version": "r151056",
              "versionType": "custom"
            },
            {
              "changes": [
                {
                  "at": "r151054bw",
                  "status": "unaffected"
                }
              ],
              "lessThan": "r151054bw",
              "status": "affected",
              "version": "r151054",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "0ca53633-f0b5-4853-ba72-e0a2e62000d0"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A stack-based buffer overflow in the illumos reparse point daemon (reparsed) allows a local user to crash the daemon. get_fs_locations() in usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c, part of the nfs-basic reparse plugin, copies the host and path components of a reparse string into a fixed 1024-byte stack buffer without checking their length. The reparsed door at /var/run/reparsed_door is readable by all users and the door server does not check the caller\u0027s credentials, so an unprivileged local user can send an nfs-basic request with an overlong host or path component to overflow the buffer. On systems built with stack protection, which is the default, this causes reparsed to abort; repeated requests place the svc:/system/filesystem/reparse service into maintenance. The service is disabled by default. The flaw has existed since 2009 (illumos-gate commit 2f172c55), and affects any illumos distribution prior to illumos-gate commit 6a2df4aa."
    }
  ],
  "id": "CVE-2026-104115",
  "lastModified": "2026-10-09T16:35:35.900",
  "metrics": {
    "cvssMetricV40": [
      {
        "cvssData": {
          "Automatable": "NOT_DEFINED",
          "Recovery": "NOT_DEFINED",
          "Safety": "NOT_DEFINED",
          "attackComplexity": "LOW",
          "attackRequirements": "NONE",
          "attackVector": "LOCAL",
          "availabilityRequirement": "NOT_DEFINED",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityRequirement": "NOT_DEFINED",
          "exploitMaturity": "PROOF_OF_CONCEPT",
          "integrityRequirement": "NOT_DEFINED",
          "modifiedAttackComplexity": "NOT_DEFINED",
          "modifiedAttackRequirements": "NOT_DEFINED",
          "modifiedAttackVector": "NOT_DEFINED",
          "modifiedPrivilegesRequired": "NOT_DEFINED",
          "modifiedSubAvailabilityImpact": "NOT_DEFINED",
          "modifiedSubConfidentialityImpact": "NOT_DEFINED",
          "modifiedSubIntegrityImpact": "NOT_DEFINED",
          "modifiedUserInteraction": "NOT_DEFINED",
          "modifiedVulnAvailabilityImpact": "NOT_DEFINED",
          "modifiedVulnConfidentialityImpact": "NOT_DEFINED",
          "modifiedVulnIntegrityImpact": "NOT_DEFINED",
          "privilegesRequired": "LOW",
          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "NONE",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
          "version": "4.0",
          "vulnAvailabilityImpact": "HIGH",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "NONE",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "0ca53633-f0b5-4853-ba72-e0a2e62000d0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-10-09T15:17:07.590",
  "references": [
    {
      "source": "0ca53633-f0b5-4853-ba72-e0a2e62000d0",
      "url": "https://github.com/illumos/illumos-gate/commit/6a2df4aa5381599179ab6afb3165db81960dee35"
    },
    {
      "source": "0ca53633-f0b5-4853-ba72-e0a2e62000d0",
      "url": "https://illumos.org/issues/18496"
    },
    {
      "source": "0ca53633-f0b5-4853-ba72-e0a2e62000d0",
      "url": "https://illumos.topicbox.com/groups/developer/T3b859664594b7762/cve-2026-104112-to-cve-2026-104117-denial-of-service-and-missing-authorization-in-door-servers"
    }
  ],
  "sourceIdentifier": "0ca53633-f0b5-4853-ba72-e0a2e62000d0",
  "vulnStatus": "Awaiting Analysis",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-121"
        }
      ],
      "source": "0ca53633-f0b5-4853-ba72-e0a2e62000d0",
      "type": "Secondary"
    }
  ]
}



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