FKIE_CVE-2021-35942

Vulnerability from fkie_nvd - Published: 2021-07-22 18:15 - Updated: 2026-10-14 12:17
Severity
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations.
References
cve@mitre.orghttps://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
cve@mitre.orghttps://security.gentoo.org/glsa/202208-24Third Party Advisory
cve@mitre.orghttps://security.netapp.com/advisory/ntap-20210827-0005/Third Party Advisory
cve@mitre.orghttps://sourceware.org/bugzilla/show_bug.cgi?id=28011Issue Tracking, Third Party Advisory
cve@mitre.orghttps://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=5adda61f62b77384718b4c0d8336ade8f2b4b35cBroken Link
cve@mitre.orghttps://sourceware.org/glibc/wiki/Security%20ExceptionsNot Applicable
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2022/10/msg00021.htmlMailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202208-24Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210827-0005/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/bugzilla/show_bug.cgi?id=28011Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/git/?p=glibc.git%3Ba=commit%3Bh=5adda61f62b77384718b4c0d8336ade8f2b4b35cBroken Link
af854a3a-2127-422b-91ae-364da2661108https://sourceware.org/glibc/wiki/Security%20ExceptionsNot Applicable
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-398330.html
0b142b55-0307-4c5a-b3c9-f314f3fb7c5ehttps://cert-portal.siemens.com/productcert/html/ssa-831302.html
Impacted products
Vendor Product Version
gnu glibc *
netapp active_iq_unified_manager -
netapp e-series_santricity_os_controller *
netapp hci_management_node -
netapp ontap_select_deploy_administration_utility -
netapp solidfire -
debian debian_linux 10.0
To clipboard 

{
  "affected": [
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          "vendor": "n/a",
          "versions": [
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              "version": "n/a"
            }
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      ],
      "source": "cve@mitre.org"
    },
    {
      "affectedData": [
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          "product": "SIMATIC S7-1500 CPU 1518-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
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              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
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          "vendor": "Siemens",
          "versions": [
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              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
            }
          ]
        },
        {
          "defaultStatus": "unknown",
          "product": "SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP",
          "vendor": "Siemens",
          "versions": [
            {
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              "status": "affected",
              "version": "V3.1.0",
              "versionType": "custom"
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          "vendor": "Siemens",
          "versions": [
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              "status": "affected",
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              "versionType": "custom"
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        },
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          "vendor": "Siemens",
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              "status": "affected",
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The wordexp function in the GNU C Library (aka glibc) through 2.33 may crash or read arbitrary memory in parse_param (in posix/wordexp.c) when called with an untrusted, crafted pattern, potentially resulting in a denial of service or disclosure of information. This occurs because atoi was used but strtoul should have been used to ensure correct calculations."
    },
    {
      "lang": "es",
      "value": "La funci\u00f3n wordexp de la biblioteca GNU C (tambi\u00e9n se conoce como glibc) versiones hasta 2.33, puede bloquearse o leer memoria arbitraria en la funci\u00f3n parse_param (en el archivo posix/wordexp.c) cuando se llama con un patr\u00f3n dise\u00f1ado que no es confiable, resultando en una denegaci\u00f3n de servicio o divulgaci\u00f3n de informaci\u00f3n. Esto ocurre porque atoi fue usado pero deber\u00eda haber sido usado strtoul para asegurar c\u00e1lculos correctos"
    }
  ],
  "id": "CVE-2021-35942",
  "lastModified": "2026-10-14T12:17:13.210",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 6.4,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 4.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
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    ],
    "cvssMetricV31": [
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          "attackVector": "NETWORK",
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          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
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          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
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          "options": [
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              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-02-13T20:00:35.745017Z",
          "version": "2.0.3"
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  "published": "2021-07-22T18:15:23.287",
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}



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