CVE-2022-37434 (GCVE-0-2022-37434)

Vulnerability from cvelistv5 – Published: 2022-08-05 00:00 – Updated: 2026-07-14 11:54
VLAI
Summary
zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • n/a
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
References
URL Tags
https://github.com/ivd38/zlib_overflow
https://github.com/madler/zlib/commit/eff308af425…
https://github.com/madler/zlib/blob/21767c654d31d…
https://github.com/nodejs/node/blob/75b68c6e4db51…
http://www.openwall.com/lists/oss-security/2022/08/05/2 mailing-list
https://github.com/curl/curl/issues/9271
http://www.openwall.com/lists/oss-security/2022/08/09/1 mailing-list
https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
https://www.debian.org/security/2022/dsa-5218 vendor-advisory
https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
https://security.netapp.com/advisory/ntap-2022090…
https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
https://lists.debian.org/debian-lts-announce/2022… mailing-list
https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
https://lists.fedoraproject.org/archives/list/pac… vendor-advisory
https://support.apple.com/kb/HT213489
https://support.apple.com/kb/HT213488
https://support.apple.com/kb/HT213494
https://support.apple.com/kb/HT213493
https://support.apple.com/kb/HT213491
https://support.apple.com/kb/HT213490
http://seclists.org/fulldisclosure/2022/Oct/41 mailing-list
http://seclists.org/fulldisclosure/2022/Oct/38 mailing-list
http://seclists.org/fulldisclosure/2022/Oct/37 mailing-list
http://seclists.org/fulldisclosure/2022/Oct/42 mailing-list
https://security.netapp.com/advisory/ntap-2023042…
https://github.com/madler/zlib/commit/1eb7682f845…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
https://cert-portal.siemens.com/productcert/html/…
Impacted products
Vendor Product Version
Siemens CADRA Affected: 0 , < V2511 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX MX5000 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX MX5000RE Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1400 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1500 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1501 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1510 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1511 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1512 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1524 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX1536 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens RUGGEDCOM ROX RX5000 Affected: 0 , < V2.17.0 (custom)
Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
Create a notification for this product.
Siemens SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
Create a notification for this product.
Siemens SIPLUS S7-1500 CPU 1518-4 PN/DP MFP Affected: V3.1.0 , < V3.1.5 (custom)
Create a notification for this product.
Show details on NVD website
To clipboard 

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          "url": "https://support.apple.com/kb/HT213494"
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          "url": "https://support.apple.com/kb/HT213493"
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          "url": "https://support.apple.com/kb/HT213491"
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        {
          "url": "https://support.apple.com/kb/HT213490"
        },
        {
          "name": "20221030 APPLE-SA-2022-10-27-5 Additional information for APPLE-SA-2022-10-24-2 macOS Ventura 13",
          "tags": [
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        },
        {
          "name": "20221030 APPLE-SA-2022-10-27-2 Additional information for APPLE-SA-2022-10-24-1 iOS 16.1 and iPadOS 16",
          "tags": [
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          "url": "http://seclists.org/fulldisclosure/2022/Oct/38"
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          "tags": [
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          "url": "http://seclists.org/fulldisclosure/2022/Oct/42"
        },
        {
          "url": "https://security.netapp.com/advisory/ntap-20230427-0007/"
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          "url": "https://github.com/madler/zlib/commit/1eb7682f845ac9e9bf9ae35bbfb3bad5dacbd91d"
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    "assignerShortName": "mitre",
    "cveId": "CVE-2022-37434",
    "datePublished": "2022-08-05T00:00:00.000Z",
    "dateReserved": "2022-08-05T00:00:00.000Z",
    "dateUpdated": "2026-07-14T11:54:11.553Z",
    "state": "PUBLISHED"
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      "descriptions": "[{\"lang\": \"en\", \"value\": \"zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g., see the nodejs/node reference).\"}, {\"lang\": \"es\", \"value\": \"zlib versiones hasta 1.2.12, presenta una lectura excesiva de b\\u00fafer en la regi\\u00f3n heap de la memoria o desbordamiento de b\\u00fafer en el archivo inflate.c por medio de un campo extra del encabezado gzip. NOTA: s\\u00f3lo est\\u00e1n afectadas las aplicaciones que llaman a inflateGetHeader. Algunas aplicaciones comunes agrupan el c\\u00f3digo fuente de zlib afectado pero pueden ser incapaces de llamar a inflateGetHeader (por ejemplo, v\\u00e9ase la referencia nodejs/node)\"}]",
      "id": "CVE-2022-37434",
      "lastModified": "2024-11-21T07:14:59.070",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 9.8, \"baseSeverity\": \"CRITICAL\", \"attackVector\": \"NETWORK\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"NONE\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 3.9, \"impactScore\": 5.9}]}",
      "published": "2022-08-05T07:15:07.240",
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      "sourceIdentifier": "cve@mitre.org",
      "vulnStatus": "Modified",
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    "microsoft_vex": {
      "current_release_date": "2026-02-18T14:14:38.000Z",
      "cve": "CVE-2022-37434",
      "id": "msrc_CVE-2022-37434",
      "initial_release_date": "2022-08-02T00:00:00.000Z",
      "product_status:fixed": "7",
      "product_status:known_affected": "7",
      "product_status:known_not_affected": "13",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "zlib through 1.2.12 has a heap-based buffer over-read or buffer overflow in inflate in inflate.c via a large gzip header extra field. NOTE: only applications that call inflateGetHeader are affected. Some common applications bundle the affected zlib source code but may be unable to call inflateGetHeader (e.g. see the nodejs/node reference).",
      "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2022-37434.json",
      "version": "15"
    },
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    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-06-29T22:49:17+00:00",
      "cve": "CVE-2022-37434",
      "id": "CVE-2022-37434",
      "initial_release_date": "2022-08-05T00:00:00+00:00",
      "product_status:fixed": "230",
      "product_status:known_affected": "7",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "zlib: heap-based buffer over-read and overflow in inflate() in inflate.c via a large gzip header extra field",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2022/cve-2022-37434.json",
      "version": "3"
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  }
}



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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.