FKIE_CVE-2021-29628

Vulnerability from fkie_nvd - Published: 2021-05-28 15:15 - Updated: 2026-06-17 03:48
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Summary
In FreeBSD 13.0-STABLE before n245764-876ffe28796c, 12.2-STABLE before r369857, 13.0-RELEASE before p1, and 12.2-RELEASE before p7, a system call triggering a fault could cause SMAP protections to be disabled for the duration of the system call. This weakness could be combined with other kernel bugs to craft an exploit.
References
secteam@freebsd.orghttps://security.FreeBSD.org/advisories/FreeBSD-SA-21:11.smap.ascExploit, Vendor Advisory
secteam@freebsd.orghttps://security.netapp.com/advisory/ntap-20210713-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.FreeBSD.org/advisories/FreeBSD-SA-21:11.smap.ascExploit, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210713-0002/Third Party Advisory
Impacted products
Vendor Product Version
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 12.2
freebsd freebsd 13.0
freebsd freebsd 13.0
freebsd freebsd 13.0
freebsd freebsd 13.0
freebsd freebsd 13.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "FreeBSD",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "FreeBSD 13.0-RELEASE before p1, 12.2-RELEASE before p7"
            }
          ]
        }
      ],
      "source": "secteam@freebsd.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*",
              "matchCriteriaId": "73D9C08B-8F5B-40C4-A5BD-B00D2E4C012D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:beta1-p1:*:*:*:*:*:*",
              "matchCriteriaId": "04A52071-1307-4038-ACDF-F69954E95A39",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*",
              "matchCriteriaId": "62A178A3-6A52-4981-9A27-FB07AD8AF778",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*",
              "matchCriteriaId": "54A487B1-E5CE-4C76-87E8-518D24C5D86D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p3:*:*:*:*:*:*",
              "matchCriteriaId": "9F084CAB-D138-4BF6-ABC2-2314F0FDE0D1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p4:*:*:*:*:*:*",
              "matchCriteriaId": "4C232CA9-FC15-4596-AA99-74509A714C12",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p5:*:*:*:*:*:*",
              "matchCriteriaId": "25BD9C03-6219-49EB-B503-CD44A3B9AA0A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:12.2:p6:*:*:*:*:*:*",
              "matchCriteriaId": "900755CC-07EF-4799-B5B4-F3762B3650E8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:-:*:*:*:*:*:*",
              "matchCriteriaId": "174265E7-6B73-4546-B4C7-3826C7EB5624",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:beta3-p1:*:*:*:*:*:*",
              "matchCriteriaId": "EC7326E3-908D-47A1-B848-3AA7F34B3DD3",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:rc3:*:*:*:*:*:*",
              "matchCriteriaId": "ADBA841F-5C83-4759-84B7-B59DA1B12EA8",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:rc4:*:*:*:*:*:*",
              "matchCriteriaId": "6A8F38B3-A6DA-4178-A2BD-0D4F0267C384",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:freebsd:freebsd:13.0:rc5-p1:*:*:*:*:*:*",
              "matchCriteriaId": "00D28E4E-022B-482E-9952-7F7F47C427C2",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In FreeBSD 13.0-STABLE before n245764-876ffe28796c, 12.2-STABLE before r369857, 13.0-RELEASE before p1, and 12.2-RELEASE before p7, a system call triggering a fault could cause SMAP protections to be disabled for the duration of the system call. This weakness could be combined with other kernel bugs to craft an exploit."
    },
    {
      "lang": "es",
      "value": "En FreeBSD versiones 13.0-STABLE anteriores a n245764-876ffe28796c, versiones 12.2-STABLE anteriores a r369857, versiones 13.0-RELEASE anteriores a p1 y versiones 12.2-RELEASE anteriores a p7, una llamada al sistema que desencadena un fallo podr\u00eda causar que las protecciones SMAP sean deshabilitadas durante la llamada al sistema.\u0026#xa0;Esta debilidad podr\u00eda ser combinada con otros bugs del kernel para dise\u00f1ar una explotaci\u00f3n"
    }
  ],
  "id": "CVE-2021-29628",
  "lastModified": "2026-06-17T03:48:03.470",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "NONE",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2021-05-28T15:15:08.627",
  "references": [
    {
      "source": "secteam@freebsd.org",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:11.smap.asc"
    },
    {
      "source": "secteam@freebsd.org",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210713-0002/"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Exploit",
        "Vendor Advisory"
      ],
      "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:11.smap.asc"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory"
      ],
      "url": "https://security.netapp.com/advisory/ntap-20210713-0002/"
    }
  ],
  "sourceIdentifier": "secteam@freebsd.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-863"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.