cnvd - cnvd-2021-100235

cnvd-2021-100235

Vulnerability from cnvd

Title: lxml注入漏洞

Description:

Lxml是Lxml个人开发者的一个可与Python交互用于定位Html中元素的软件。

lxml 4.6.5之前版本存在注入漏洞，该漏洞源于HTML Cleaner允许某些精心制作的脚本内容以及使用数据URI嵌入的SVG文件中的脚本内容通过。目前没有详细的漏洞细节提供。

Severity: 高

Patch Name: lxml注入漏洞的补丁

Patch Description:

Lxml是Lxml个人开发者的一个可与Python交互用于定位Html中元素的软件。

lxml 4.6.5之前版本存在注入漏洞，该漏洞源于HTML Cleaner允许某些精心制作的脚本内容以及使用数据URI嵌入的SVG文件中的脚本内容通过。目前没有详细的漏洞细节提供。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:

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8

Reference: https://nvd.nist.gov/vuln/detail/CVE-2021-43818

Impacted products

Name
lxml lxml <4.6.5

Show details on source website

JSON

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    "cve": {
      "cveNumber": "CVE-2021-43818"
    }
  },
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  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2021-43818",
  "serverity": "\u9ad8",
  "submitTime": "2021-12-15",
  "title": "lxml\u6ce8\u5165\u6f0f\u6d1e"
}

CVE-2021-43818 (GCVE-0-2021-43818)

Vulnerability from cvelistv5

Published

2021-12-13 18:05

Modified

2024-08-04 04:03

Severity ?

8.2 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N

CWE

CWE-74 - Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Summary

lxml is a library for processing XML and HTML in the Python language. Prior to version 4.6.5, the HTML Cleaner in lxml.html lets certain crafted script content pass through, as well as script content in SVG files embedded using data URIs. Users that employ the HTML cleaner in a security relevant context should upgrade to lxml 4.6.5 to receive a patch. There are no known workarounds available.

References

▼	URL	Tags
	https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8	x_refsource_CONFIRM
	https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a	x_refsource_MISC
	https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776	x_refsource_MISC
	https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0	x_refsource_MISC
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/	vendor-advisory, x_refsource_FEDORA
	https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2022/dsa-5043	vendor-advisory, x_refsource_DEBIAN
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/	vendor-advisory, x_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/	vendor-advisory, x_refsource_FEDORA
	https://www.oracle.com/security-alerts/cpuapr2022.html	x_refsource_MISC
	https://security.netapp.com/advisory/ntap-20220107-0005/	x_refsource_CONFIRM
	https://www.oracle.com/security-alerts/cpujul2022.html	x_refsource_MISC
	https://security.gentoo.org/glsa/202208-06	vendor-advisory, x_refsource_GENTOO

Impacted products

	Vendor	Product	Version
	lxml	lxml	Version: < 4.6.5

Show details on NVD website

JSON

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              "name": "FEDORA-2021-6e8fb79f90",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/"
            },
            {
              "name": "FEDORA-2021-9f9e7c5c4f",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/"
            },
            {
              "name": "[debian-lts-announce] 20211230 [SECURITY] [DLA 2871-1] lxml security update",
              "refsource": "MLIST",
              "url": "https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html"
            },
            {
              "name": "DSA-5043",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2022/dsa-5043"
            },
            {
              "name": "FEDORA-2022-96c79bf003",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/"
            },
            {
              "name": "FEDORA-2022-7129fbaeed",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
              "name": "https://security.netapp.com/advisory/ntap-20220107-0005/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20220107-0005/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujul2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
            },
            {
              "name": "GLSA-202208-06",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202208-06"
            }
          ]
        },
        "source": {
          "advisory": "GHSA-55x5-fj6c-h6m8",
          "discovery": "UNKNOWN"
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2021-43818",
    "datePublished": "2021-12-13T18:05:12",
    "dateReserved": "2021-11-16T00:00:00",
    "dateUpdated": "2024-08-04T04:03:08.992Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

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