Vulnerability-Lookup

CNVD-2018-17877

Vulnerability from cnvd - Published: 2018-09-07

Title

libxml2拒绝服务漏洞（CNVD-2018-17877）

Description

Libxml2是GNOME项目组所研发的一个基于C语言的用来解析XML文档的函数库，它支持多种编码格式、Xpath解析、Well-formed和valid验证等。 libxml2 2.9.8版本中存在拒绝服务漏洞。远程攻击者可借助特制的XML文件利用该漏洞造成拒绝服务（无限循环）。

Severity

中

Patch Name

libxml2拒绝服务漏洞（CNVD-2018-17877）的补丁

Patch Description

Libxml2是GNOME项目组所研发的一个基于C语言的用来解析XML文档的函数库，它支持多种编码格式、Xpath解析、Well-formed和valid验证等。 libxml2 2.9.8版本中存在拒绝服务漏洞。远程攻击者可借助特制的XML文件利用该漏洞造成拒绝服务（无限循环）。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

厂商已发布漏洞修复程序，请及时关注更新： https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-14567

Impacted products

Name
XMLSoft Libxml2 2.9.8

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-14567"
    }
  },
  "description": "Libxml2\u662fGNOME\u9879\u76ee\u7ec4\u6240\u7814\u53d1\u7684\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7684\u7528\u6765\u89e3\u6790XML\u6587\u6863\u7684\u51fd\u6570\u5e93\uff0c\u5b83\u652f\u6301\u591a\u79cd\u7f16\u7801\u683c\u5f0f\u3001Xpath\u89e3\u6790\u3001Well-formed\u548cvalid\u9a8c\u8bc1\u7b49\u3002\r\n\r\nlibxml2 2.9.8\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684XML\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u65e0\u9650\u5faa\u73af\uff09\u3002",
  "discovererName": "Unknow",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-17877",
  "openTime": "2018-09-07",
  "patchDescription": "Libxml2\u662fGNOME\u9879\u76ee\u7ec4\u6240\u7814\u53d1\u7684\u4e00\u4e2a\u57fa\u4e8eC\u8bed\u8a00\u7684\u7528\u6765\u89e3\u6790XML\u6587\u6863\u7684\u51fd\u6570\u5e93\uff0c\u5b83\u652f\u6301\u591a\u79cd\u7f16\u7801\u683c\u5f0f\u3001Xpath\u89e3\u6790\u3001Well-formed\u548cvalid\u9a8c\u8bc1\u7b49\u3002\r\n\r\nlibxml2 2.9.8\u7248\u672c\u4e2d\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236\u7684XML\u6587\u4ef6\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u65e0\u9650\u5faa\u73af\uff09\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "libxml2\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-17877\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "XMLSoft Libxml2 2.9.8"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-14567",
  "serverity": "\u4e2d",
  "submitTime": "2018-08-17",
  "title": "libxml2\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-17877\uff09"
}

CVE-2018-14567 (GCVE-0-2018-14567)

Vulnerability from cvelistv5 – Published: 2018-08-16 20:00 – Updated: 2024-08-05 09:29

Summary

libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

5 references

URL	Tags
http://www.securityfocus.com/bid/105198	vdb-entryx_refsource_BID
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3739-1/	vendor-advisoryx_refsource_UBUNTU
https://gitlab.gnome.org/GNOME/libxml2/commit/224…	x_refsource_CONFIRM
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST

Date Public

2018-07-30 00:00

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T09:29:51.664Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "105198",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/105198"
          },
          {
            "name": "[debian-lts-announce] 20180927 [SECURITY] [DLA 1524-1] libxml2 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html"
          },
          {
            "name": "USN-3739-1",
            "tags": [
              "vendor-advisory",
              "x_refsource_UBUNTU",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/3739-1/"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74"
          },
          {
            "name": "[debian-lts-announce] 20200909 [SECURITY] [DLA 2369-1] libxml2 security update",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2018-07-30T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2020-09-10T00:06:23.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "105198",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/105198"
        },
        {
          "name": "[debian-lts-announce] 20180927 [SECURITY] [DLA 1524-1] libxml2 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html"
        },
        {
          "name": "USN-3739-1",
          "tags": [
            "vendor-advisory",
            "x_refsource_UBUNTU"
          ],
          "url": "https://usn.ubuntu.com/3739-1/"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74"
        },
        {
          "name": "[debian-lts-announce] 20200909 [SECURITY] [DLA 2369-1] libxml2 security update",
          "tags": [
            "mailing-list",
            "x_refsource_MLIST"
          ],
          "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-14567",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "libxml2 2.9.8, if --with-lzma is used, allows remote attackers to cause a denial of service (infinite loop) via a crafted XML file that triggers LZMA_MEMLIMIT_ERROR, as demonstrated by xmllint, a different vulnerability than CVE-2015-8035 and CVE-2018-9251."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "105198",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/105198"
            },
            {
              "name": "[debian-lts-announce] 20180927 [SECURITY] [DLA 1524-1] libxml2 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2018/09/msg00035.html"
            },
            {
              "name": "USN-3739-1",
              "refsource": "UBUNTU",
              "url": "https://usn.ubuntu.com/3739-1/"
            },
            {
              "name": "https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74",
              "refsource": "CONFIRM",
              "url": "https://gitlab.gnome.org/GNOME/libxml2/commit/2240fbf5912054af025fb6e01e26375100275e74"
            },
            {
              "name": "[debian-lts-announce] 20200909 [SECURITY] [DLA 2369-1] libxml2 security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2020/09/msg00009.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-14567",
    "datePublished": "2018-08-16T20:00:00.000Z",
    "dateReserved": "2018-07-23T00:00:00.000Z",
    "dateUpdated": "2024-08-05T09:29:51.664Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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.