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Security Advisories: GSA_kwCzR0hTQS01NXg1LWZqNmMtaDZtOM0a1g
lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
Impact
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.
Patches
The issue has been resolved in lxml 4.6.5.
Workarounds
None.
References
The issues are tracked under the report IDs GHSL-2021-1037 and GHSL-2021-1038.
Permalink: https://github.com/advisories/GHSA-55x5-fj6c-h6m8JSON: https://advisories.ecosyste.ms/api/v1/advisories/GSA_kwCzR0hTQS01NXg1LWZqNmMtaDZtOM0a1g
Source: GitHub Advisory Database
Origin: Unspecified
Severity: High
Classification: General
Published: over 2 years ago
Updated: over 1 year ago
CVSS Score: 8.2
CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N
Identifiers: GHSA-55x5-fj6c-h6m8, CVE-2021-43818
References:
- https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8
- https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a
- https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776
- https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0
- https://nvd.nist.gov/vuln/detail/CVE-2021-43818
- https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html
- https://lists.fedoraproject.org/archives/list/[email protected]/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/
- https://security.netapp.com/advisory/ntap-20220107-0005/
- https://www.debian.org/security/2022/dsa-5043
- https://lists.fedoraproject.org/archives/list/[email protected]/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/
- https://lists.fedoraproject.org/archives/list/[email protected]/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://security.gentoo.org/glsa/202208-06
- https://github.com/advisories/GHSA-55x5-fj6c-h6m8
Blast Radius: 41.5
Affected Packages
pypi:lxml
Dependent packages: 3,046Dependent repositories: 115,734
Downloads: 86,331,857 last month
Affected Version Ranges: < 4.6.5
Fixed in: 4.6.5
All affected versions: 0.9.1, 0.9.2, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.1.1, 1.1.2, 1.2.1, 1.3.1, 1.3.2, 1.3.3, 1.3.4, 1.3.5, 1.3.6, 2.0.1, 2.0.2, 2.0.3, 2.0.4, 2.0.5, 2.0.6, 2.0.7, 2.0.8, 2.0.9, 2.0.10, 2.0.11, 2.1.1, 2.1.2, 2.1.3, 2.1.4, 2.1.5, 2.2.1, 2.2.2, 2.2.3, 2.2.4, 2.2.5, 2.2.6, 2.2.7, 2.2.8, 2.3.1, 2.3.2, 2.3.3, 2.3.4, 2.3.5, 2.3.6, 3.0.1, 3.0.2, 3.1.0, 3.1.1, 3.1.2, 3.2.0, 3.2.1, 3.2.2, 3.2.3, 3.2.4, 3.2.5, 3.3.0, 3.3.1, 3.3.2, 3.3.3, 3.3.4, 3.3.5, 3.3.6, 3.4.0, 3.4.1, 3.4.2, 3.4.3, 3.4.4, 3.5.0, 3.6.0, 3.6.1, 3.6.2, 3.6.3, 3.6.4, 3.7.0, 3.7.1, 3.7.2, 3.7.3, 3.8.0, 4.0.0, 4.1.0, 4.1.1, 4.2.0, 4.2.1, 4.2.2, 4.2.3, 4.2.4, 4.2.5, 4.2.6, 4.3.0, 4.3.1, 4.3.2, 4.3.3, 4.3.4, 4.3.5, 4.4.0, 4.4.1, 4.4.2, 4.4.3, 4.5.0, 4.5.1, 4.5.2, 4.6.0, 4.6.1, 4.6.2, 4.6.3, 4.6.4
All unaffected versions: 4.6.5, 4.7.0, 4.7.1, 4.8.0, 4.9.0, 4.9.1, 4.9.2, 4.9.3, 4.9.4, 5.0.0, 5.0.1, 5.0.2, 5.1.0, 5.1.1, 5.2.0, 5.2.1