CVE-2021-43818

Name
CVE-2021-43818
Description
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.
NVD Severity
medium
Other trackers
CVE, NVD, CERT, CVE Details, CIRCL, Arch Linux, Debian, Red Hat, Ubuntu, Gentoo, SUSE (Bugzilla), SUSE (CVE), Mageia
Mailing lists
oss-security, full-disclosure, bugtraq
Exploits
Exploit DB, Metasploit
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://github.com/lxml/lxml/commit/f2330237440df7e8f39c3ad1b1aa8852be3b27c0
MISC https://github.com/lxml/lxml/commit/a3eacbc0dcf1de1c822ec29fb7d090a4b1712a9c#diff-59130575b4fb2932c957db2922977d7d89afb0b2085357db1a14615a2fcad776
CONFIRM https://github.com/lxml/lxml/security/advisories/GHSA-55x5-fj6c-h6m8
MISC https://github.com/lxml/lxml/commit/12fa9669007180a7bb87d990c375cf91ca5b664a
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WZGNET2A4WGLSUXLBFYKNC5PXHQMI3I7/
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZQ4SPKJX3RRJK4UWA6FXCRHD2TVRQI44/
Third Party Advisory https://lists.debian.org/debian-lts-announce/2021/12/msg00037.html
Third Party Advisory https://security.netapp.com/advisory/ntap-20220107-0005/
Third Party Advisory https://www.debian.org/security/2022/dsa-5043
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/TUIS2KE3HZ2AAQKXFLTJFZPP2IFHJTC7/
Mailing List https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/V2XMOM5PFT6U5AAXY6EFNT5JZCKKHK2V/
MISC https://www.oracle.com/security-alerts/cpuapr2022.html

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:lxml:lxml:*:*:*:*:*:*:*:* lxml >= None < 4.6.5

Vulnerable and fixed packages

Source package Branch Version Maintainer Status
py3-lxml edge-main 4.6.5-r0 None fixed
py3-lxml edge-community 4.6.5-r0 Francesco Colista <fcolista@alpinelinux.org> fixed
py3-lxml 3.22-main 4.6.5-r0 None fixed
py3-lxml 3.21-main 4.6.5-r0 None fixed
py3-lxml 3.20-main 4.6.5-r0 None fixed
py3-lxml 3.19-main 4.6.5-r0 None fixed
py3-lxml 3.18-main 4.6.5-r0 None fixed
py3-lxml 3.17-main 4.6.5-r0 None fixed