CVE-2021-43818: lxml's HTML Cleaner allows crafted and SVG embedded scripts to pass through
(updated )
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.
References
- github.com/advisories/GHSA-55x5-fj6c-h6m8
- github.com/lxml/lxml
- github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a
- github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c
- github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0
- github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8
- github.com/pypa/advisory-database/tree/main/vulns/lxml/PYSEC-2021-852.yaml
- lists.debian.org/debian-lts-announce/2021/12/msg00037.html
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7
- lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44
- nvd.nist.gov/vuln/detail/CVE-2021-43818
- security.gentoo.org/glsa/202208-06
- security.netapp.com/advisory/ntap-20220107-0005
- www.debian.org/security/2022/dsa-5043
- www.oracle.com/security-alerts/cpuapr2022.html
- www.oracle.com/security-alerts/cpujul2022.html
Code Behaviors & Features
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