CVE-2020-27783

Summary

A XSS vulnerability was discovered in python-lxml's clean module. The module's parser didn't properly imitate browsers, which caused different behaviors between the sanitizer and the user's page. A remote attacker could exploit this flaw to run arbitrary HTML/JS code.

Affected Software

Weaknesses

• CWE-79: CWE-79

ADP Enrichment

CVE Program Container

Additional References

• https://bugzilla.redhat.com/show_bug.cgi?id=1901633
• https://www.debian.org/security/2020/dsa-4810
• https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/
• https://www.oracle.com//security-alerts/cpujul2021.html
• https://advisory.checkmarx.net/advisory/CX-2020-4286
• https://security.netapp.com/advisory/ntap-20210521-0003/

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://bugzilla.redhat.com/show_bug.cgi?id=1901633
• https://www.debian.org/security/2020/dsa-4810
• https://lists.debian.org/debian-lts-announce/2020/12/msg00028.html
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TMHVKRUT22LVWNL3TB7HPSDHJT74Q3JK/
• https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JKG67GPGTV23KADT4D4GK4RMHSO4CIQL/
• https://www.oracle.com//security-alerts/cpujul2021.html
• https://advisory.checkmarx.net/advisory/CX-2020-4286
• https://security.netapp.com/advisory/ntap-20210521-0003/

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