Vulnerability-Lookup

CVE-2017-16931 (GCVE-0-2017-16931)

Vulnerability from cvelistv5 – Published: 2017-11-23 21:00 – Updated: 2026-10-14 06:30

Summary

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

Severity

9.8 (Critical)


                        
                          CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2327 records in the last 180 days details

References

6 references

URL	Tags
https://lists.debian.org/debian-lts-announce/2017…	mailing-listx_refsource_MLIST
https://www.oracle.com//security-alerts/cpujul2021.html	x_refsource_MISC
https://bugzilla.gnome.org/show_bug.cgi?id=766956	x_refsource_CONFIRM
http://xmlsoft.org/news.html	x_refsource_CONFIRM
https://github.com/GNOME/libxml2/commit/e26630548…	x_refsource_CONFIRM
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

Vendor	Product	Version	CPE status
Siemens	SIMATIC S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.0 , < V3.1.5 (custom)	guessed
Siemens	SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP	Affected: V3.1.0 , < V3.1.5 (custom)	guessed
Siemens	SIPLUS S7-1500 CPU 1518-4 PN/DP MFP	Affected: V3.1.0 , < V3.1.5 (custom)	guessed

Date Public

2017-11-23 00:00

Show details on NVD website

JSON

To clipboard

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GHSA-7MR2-R9FX-7J9M

Vulnerability from github – Published: 2022-05-13 01:08 – Updated: 2026-10-14 09:31

Details

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

Severity

9.8 (Critical)


                  
                    CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

To clipboard

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  ],
  "database_specific": {
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    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2017-11-23T21:29:00Z",
    "severity": "CRITICAL"
  },
  "details": "parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a \u0027%\u0027 character in a DTD name.",
  "id": "GHSA-7mr2-r9fx-7j9m",
  "modified": "2026-10-14T09:31:15Z",
  "published": "2022-05-13T01:08:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-16931"
    },
    {
      "type": "WEB",
      "url": "https://github.com/GNOME/libxml2/commit/e26630548e7d138d2c560844c43820b6767251e3"
    },
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    },
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      "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
    },
    {
      "type": "WEB",
      "url": "http://xmlsoft.org/news.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2017-16931

Vulnerability from gsd - Updated: 2023-12-13 01:21

Details

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

Aliases

CVE-2017-16931

Aliases

CVE-2017-16931

JSON

To clipboard

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    "description": "parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a \u0027%\u0027 character in a DTD name.",
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    "references": [
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    ]
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  "gsd": {
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      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
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      "details": "parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a \u0027%\u0027 character in a DTD name.",
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          "acInsufInfo": true,
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            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "PARTIAL",
            "baseScore": 7.5,
            "confidentialityImpact": "PARTIAL",
            "integrityImpact": "PARTIAL",
            "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 6.4,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.0"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-07-20T23:15Z",
      "publishedDate": "2017-11-23T21:29Z"
    }
  }
}

ICSA-23-348-10

Vulnerability from csaf_cisa - Published: 2023-12-12 00:00 - Updated: 2025-08-12 00:00

Summary

Siemens SIMATIC S7-1500

Scope

544 vulnerabilities in this advisory, including CVE-2017-16931.

CVE-2017-16931

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Known affected: 5 products

https://support.industry.siemens.com/cs/ww/en/view/109478459/

Open the full advisory

SSA-398330

Vulnerability from csaf_siemens - Published: 2023-12-12 00:00 - Updated: 2026-10-13 00:00

Summary

SSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < V3.1.5

Scope

544 vulnerabilities in this advisory, including CVE-2017-16931.

CVE-2017-16931

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

9.8 (Critical)


                
                  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C

Known affected: 5 products

https://support.industry.siemens.com/cs/ww/en/view/109478459/

Open the full advisory

UBUNTU-CVE-2017-16931 (CVE-2017-16931)

Vulnerability from osv_ubuntu – Published: 2017-11-23 21:29 – Updated: 2025-07-16 04:53 – Source website

Withdrawn 2025-07-18

Details

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name.

Severity

9.8 (Critical)


                    
                      CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2017-16931	REPORT
	http://xmlsoft.org/news.html	REPORT
	https://www.cve.org/CVERecord?id=CVE-2017-16931	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "libxml2",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
          {
            "binary_name": "libxml2-dbg",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
          {
            "binary_name": "libxml2-dbgsym",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
          {
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
          {
            "binary_name": "libxml2-udeb",
            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
          {
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
          },
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
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            "binary_version": "2.9.1+dfsg1-3ubuntu4.10"
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        "ecosystem": "Ubuntu:14.04:LTS",
        "name": "libxml2",
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      },
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        "2.9.1+dfsg1-3ubuntu3",
        "2.9.1+dfsg1-3ubuntu4",
        "2.9.1+dfsg1-3ubuntu4.1",
        "2.9.1+dfsg1-3ubuntu4.2",
        "2.9.1+dfsg1-3ubuntu4.3",
        "2.9.1+dfsg1-3ubuntu4.4",
        "2.9.1+dfsg1-3ubuntu4.5",
        "2.9.1+dfsg1-3ubuntu4.6",
        "2.9.1+dfsg1-3ubuntu4.7",
        "2.9.1+dfsg1-3ubuntu4.8",
        "2.9.1+dfsg1-3ubuntu4.9"
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    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
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          {
            "binary_name": "libxml2",
            "binary_version": "2.9.3+dfsg1-1ubuntu0.3"
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          },
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  "aliases": [],
  "details": "parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a \u0027%\u0027 character in a DTD name.",
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}

WID-SEC-W-2023-1158

Vulnerability from csaf_certbund - Published: 2017-11-23 23:00 - Updated: 2025-06-30 22:00

Summary

libxml2: Mehrere Schwachstellen ermöglichen Denial of Service

Severity

Mittel

Scope

2 vulnerabilities in this advisory, including CVE-2017-16931.

CVE-2017-16931

Known affected: 10 products

Open the full advisory

WID-SEC-W-2023-1614

Vulnerability from csaf_certbund - Published: 2023-06-29 22:00 - Updated: 2023-10-25 22:00

Summary

Tenable Security Nessus Network Monitor: Mehrere Schwachstellen

Severity

Hoch

Scope

173 vulnerabilities in this advisory, including CVE-2017-16931.

CVE-2017-16931

In Tenable Security Nessus Network Monitor existieren mehrere Schwachstellen. Die Fehler bestehen unter anderem in Komponenten von Drittanbietern wie c-ares, curl, libbzip2, libpcre, libxml2, sqlite und OpenSSL. Ein Angreifer kann diese Schwachstellen ausnutzen, um beliebigen Code auszuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand auszulösen und Daten zu manipulieren. Die erfolgreiche Ausnutzung einiger dieser Schwachstellen erfordert eine Benutzerinteraktion oder erhöhte Rechte.

Open the full advisory

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.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2017-16931 (GCVE-0-2017-16931)

GHSA-7MR2-R9FX-7J9M

GSD-2017-16931

ICSA-23-348-10

SSA-398330

UBUNTU-CVE-2017-16931 (CVE-2017-16931)

WID-SEC-W-2023-1158

WID-SEC-W-2023-1614

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour