Vulnerability-Lookup

GSD-2017-9050

Vulnerability from gsd - Updated: 2017-09-19 00:00

Details

The version of libxml2 packaged with Nokogiri contains several vulnerabilities. Nokogiri has mitigated these issues by upgrading to libxml 2.9.5. It was discovered that a type confusion error existed in libxml2. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. (CVE-2017-0663) It was discovered that libxml2 did not properly validate parsed entity references. An attacker could use this to specially construct XML data that could expose sensitive information. (CVE-2017-7375) It was discovered that a buffer overflow existed in libxml2 when handling HTTP redirects. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. (CVE-2017-7376) Marcel Böhme and Van-Thuan Pham discovered a buffer overflow in libxml2 when handling elements. An attacker could use this to specially construct XML data that could cause a denial of service or possibly execute arbitrary code. (CVE-2017-9047) Marcel Böhme and Van-Thuan Pham discovered a buffer overread in libxml2 when handling elements. An attacker could use this to specially construct XML data that could cause a denial of service. (CVE-2017-9048) Marcel Böhme and Van-Thuan Pham discovered multiple buffer overreads in libxml2 when handling parameter-entity references. An attacker could use these to specially construct XML data that could cause a denial of service. (CVE-2017-9049, CVE-2017-9050)

Aliases

CVE-2017-9050

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2017-9050",
    "description": "libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.",
    "id": "GSD-2017-9050",
    "references": [
      "https://www.suse.com/security/cve/CVE-2017-9050.html",
      "https://www.debian.org/security/2017/dsa-3952",
      "https://access.redhat.com/errata/RHSA-2018:2486",
      "https://ubuntu.com/security/CVE-2017-9050",
      "https://advisories.mageia.org/CVE-2017-9050.html"
    ]
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "affected": [
        {
          "package": {
            "ecosystem": "RubyGems",
            "name": "nokogiri",
            "purl": "pkg:gem/nokogiri"
          }
        }
      ],
      "aliases": [
        "CVE-2017-9050",
        "GHSA-8c56-cpmw-89x7"
      ],
      "details": "The version of libxml2 packaged with Nokogiri contains several\nvulnerabilities. Nokogiri has mitigated these issues by upgrading to\nlibxml 2.9.5.\n\nIt was discovered that a type confusion error existed in libxml2. An\nattacker could use this to specially construct XML data that\ncould cause a denial of service or possibly execute arbitrary\ncode. (CVE-2017-0663)\n\nIt was discovered that libxml2 did not properly validate parsed entity\nreferences. An attacker could use this to specially construct XML\ndata that could expose sensitive information. (CVE-2017-7375)\n\nIt was discovered that a buffer overflow existed in libxml2 when\nhandling HTTP redirects. An attacker could use this to specially\nconstruct XML data that could cause a denial of service or possibly\nexecute arbitrary code. (CVE-2017-7376)\n\nMarcel B\u00f6hme and Van-Thuan Pham discovered a buffer overflow in\nlibxml2 when handling elements. An attacker could use this to specially\nconstruct XML data that could cause a denial of service or possibly\nexecute arbitrary code. (CVE-2017-9047)\n\nMarcel B\u00f6hme and Van-Thuan Pham discovered a buffer overread\nin libxml2 when handling elements. An attacker could use this\nto specially construct XML data that could cause a denial of\nservice. (CVE-2017-9048)\n\nMarcel B\u00f6hme and Van-Thuan Pham discovered multiple buffer overreads\nin libxml2 when handling parameter-entity references. An attacker\ncould use these to specially construct XML data that could cause a\ndenial of service. (CVE-2017-9049, CVE-2017-9050)\n",
      "id": "GSD-2017-9050",
      "modified": "2017-09-19T00:00:00.000Z",
      "published": "2017-09-19T00:00:00.000Z",
      "references": [
        {
          "type": "WEB",
          "url": "https://github.com/sparklemotion/nokogiri/issues/1673"
        },
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          "type": "WEB",
          "url": "https://usn.ubuntu.com/usn/usn-3424-1/"
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        },
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          "type": "WEB",
          "url": "https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-9048.html"
        },
        {
          "type": "WEB",
          "url": "https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-9049.html"
        },
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          "url": "https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-9050.html"
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        "CVE-2017-9049",
        "CVE-2017-9050"
      ],
      "schema_version": "1.4.0",
      "severity": [
        {
          "score": 7.5,
          "type": "CVSS_V3"
        }
      ],
      "summary": "Nokogiri gem, via libxml, is affected by DoS and RCE vulnerabilities"
    }
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      "description": "The version of libxml2 packaged with Nokogiri contains several\nvulnerabilities. Nokogiri has mitigated these issues by upgrading to\nlibxml 2.9.5.\n\nIt was discovered that a type confusion error existed in libxml2. An\nattacker could use this to specially construct XML data that\ncould cause a denial of service or possibly execute arbitrary\ncode. (CVE-2017-0663)\n\nIt was discovered that libxml2 did not properly validate parsed entity\nreferences. An attacker could use this to specially construct XML\ndata that could expose sensitive information. (CVE-2017-7375)\n\nIt was discovered that a buffer overflow existed in libxml2 when\nhandling HTTP redirects. An attacker could use this to specially\nconstruct XML data that could cause a denial of service or possibly\nexecute arbitrary code. (CVE-2017-7376)\n\nMarcel B\u00f6hme and Van-Thuan Pham discovered a buffer overflow in\nlibxml2 when handling elements. An attacker could use this to specially\nconstruct XML data that could cause a denial of service or possibly\nexecute arbitrary code. (CVE-2017-9047)\n\nMarcel B\u00f6hme and Van-Thuan Pham discovered a buffer overread\nin libxml2 when handling elements. An attacker could use this\nto specially construct XML data that could cause a denial of\nservice. (CVE-2017-9048)\n\nMarcel B\u00f6hme and Van-Thuan Pham discovered multiple buffer overreads\nin libxml2 when handling parameter-entity references. An attacker\ncould use these to specially construct XML data that could cause a\ndenial of service. (CVE-2017-9049, CVE-2017-9050)\n",
      "gem": "nokogiri",
      "ghsa": "8c56-cpmw-89x7",
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      "related": {
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          "2017-9049",
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          "https://people.canonical.com/~ubuntu-security/cve/2017/CVE-2017-9050.html"
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      },
      "title": "Nokogiri gem, via libxml, is affected by DoS and RCE vulnerabilities",
      "url": "https://github.com/sparklemotion/nokogiri/issues/1673"
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          "cwe_ids": [
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          "description": "libxml2 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.",
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}

CVE-2017-9050 (GCVE-0-2017-9050)

Vulnerability from cvelistv5 – Published: 2017-05-18 06:13 – Updated: 2026-10-14 06:30

Summary

libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-17 22:10 UTC

CWE

n/a
CWE-122 - Heap-based Buffer Overflow

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2175 records in the last 180 days details

References

7 references

URL	Tags
http://www.securityfocus.com/bid/98568	vdb-entryx_refsource_BID
http://www.debian.org/security/2017/dsa-3952	vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/201711-01	vendor-advisoryx_refsource_GENTOO
http://www.openwall.com/lists/oss-security/2017/05/15/1	x_refsource_MISC
https://lists.apache.org/thread.html/rf4c02775860…	mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r58af02e294b…	mailing-listx_refsource_MLIST
https://cert-portal.siemens.com/productcert/html/…

Impacted products

3 products

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

Date Public

2017-05-18 00:00

Show details on NVD website

JSON

To clipboard

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GHSA-8C56-CPMW-89X7

Vulnerability from github – Published: 2017-12-13 21:38 – Updated: 2021-06-30 18:05

Summary

Out-of-bounds read in nokogiri

Details

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [
    {
      "package": {
        "ecosystem": "RubyGems",
        "name": "nokogiri"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.8.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2017-9050"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-125"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2020-06-16T21:25:13Z",
    "nvd_published_at": "2017-05-18T06:29:00Z",
    "severity": "HIGH"
  },
  "details": "libxml2 20904-GITv2.9.4-16-g0741801 is vulnerable to a heap-based buffer over-read in the xmlDictAddString function in dict.c. This vulnerability causes programs that use libxml2, such as PHP, to crash. This vulnerability exists because of an incomplete fix for CVE-2016-1839.  GitHub is notifying on nokogiri as uses libxml2.",
  "id": "GHSA-8c56-cpmw-89x7",
  "modified": "2021-06-30T18:05:23Z",
  "published": "2017-12-13T21:38:24Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2017-9050"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/201711-01"
    },
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    },
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    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Out-of-bounds read in nokogiri"
}

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

Order JSON

How durations are calculated

Following the VTEM framework (Black Hat USA 2015), time to patch starts when the vendor or a coordinator was informed, total time to patch at discovery, and disclosure to patch at public disclosure; vendor response time runs from the report to its acknowledgement. Time to exploit and time unpatched start at the earliest discovery or report, falling back to public disclosure. Unpatched time ends at the first recorded patch, or the calculation time when no patch is recorded. Exploitation to patch shows the interval between those two events; a published proof of concept is a public exploit, not exploitation.

Each result shows its source dates. A negative interval means the end event came first; when date-only inputs leave the order open, the result says so. Date-only inputs are approximate. The earliest evidence wins: KEV report dates and sightings are labelled as such. Records describing another vulnerability are listed but never calculated from, and a PoC alone does not establish exploitation. Missing patch evidence does not prove that no patch exists. Filters below change the event list only.

Publication & reservation Sightings KEV catalogs Other timestamps

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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

GSD-2017-9050

CVE-2017-9050 (GCVE-0-2017-9050)

GHSA-8C56-CPMW-89X7

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour