CVE-2024-40896: Analysis: libxml2 XXE due to type confusion
Published Dec 23, 2024
·Updated
In libxml2 2.11 before 2.11.9, 2.12 before 2.12.9, and 2.13 before 2.13.3, the SAX parser can produce events for external entities even if custom SAX handlers try to override entity content (by setting "checked"). This makes classic XXE attacks possible.
Affected Software
18 affected componentsFixes available
debian/libxml2
2.9.10+dfsg-6.7+deb11u42.9.10+dfsg-6.7+deb11u52.9.14+dfsg-1.3~deb12u12.12.7+dfsg+really2.9.14-0.2
Xmlsoft Libxml2>=2.11.0<2.11.9
Xmlsoft Libxml2>=2.12.0<2.12.9
Xmlsoft Libxml2>=2.13.0<2.13.3
All of the following
NetApp Hci Compute Node
NetApp Hci Compute Node
NetApp Solidfire \& Hci Management Node
NetApp Solidfire \& Hci Storage Node
All of the following
NetApp H300s Firmware
NetApp H300s
All of the following
NetApp H410s Firmware
NetApp H410s
All of the following
NetApp H500s Firmware
NetApp H500s
All of the following
NetApp H700s Firmware
NetApp H700s
All of the following
NetApp H410c Firmware
NetApp H410c
Event History
Dec 23, 2024
CVE Published
via MITRE·12:00 AM
Data Sourced
via MITRE·12:00 AM
DescriptionWeakness
Data Sourced
via NVD·05:15 PM
DescriptionSeverityWeakness
Data Sourced
via NVD·05:15 PM
Affected Software
Jan 20, 2025
Data Sourced
via Ubuntu·06:12 PM
RemedyDescriptionSeverityAffected Software
Frequently Asked Questions
1
What is the severity of CVE-2024-40896?
CVE-2024-40896 is classified as a high severity vulnerability affecting libxml2.
2
How do I fix CVE-2024-40896?
To fix CVE-2024-40896, upgrade libxml2 to versions 2.11.9, 2.12.9, or 2.13.3 or later.
3
Which versions of libxml2 are affected by CVE-2024-40896?
CVE-2024-40896 affects libxml2 versions prior to 2.11.9, 2.12.9, and 2.13.3.
4
What type of attack does CVE-2024-40896 allow?
CVE-2024-40896 makes classic XML External Entity (XXE) attacks possible.
5
What is the nature of the vulnerability in CVE-2024-40896?
CVE-2024-40896 involves the SAX parser producing events for external entities despite attempts to override entity content.