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CVE-2022-40303

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Date: November 21, 2022

An issue was discovered in libxml2 before 2.10.3. When parsing a multi-gigabyte XML document with the XML_PARSE_HUGE parser option enabled, several integer counters can overflow. This results in an attempt to access an array at a negative 2GB offset, typically leading to a segmentation fault.

Language: C

Severity Score

Related Resources (19)

https://support.apple.com/kb/HT213533
https://nvd.nist.gov/vuln/detail/CVE-2022-40303
https://support.apple.com/kb/HT213534
https://support.apple.com/kb/HT213535
https://security.netapp.com/advisory/ntap-20221209-0003/
http://seclists.org/fulldisclosure/2022/Dec/21
https://access.redhat.com/security/cve/CVE-2022-40303
https://support.apple.com/kb/HT213531
https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0
https://security.alpinelinux.org/vuln/CVE-2022-40303
https://support.apple.com/kb/HT213536
https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3
https://security-tracker.debian.org/tracker/CVE-2022-40303
https://people.canonical.com/~ubuntu-security/cve/CVE-2022-40303
http://seclists.org/fulldisclosure/2022/Dec/27
http://seclists.org/fulldisclosure/2022/Dec/26
http://seclists.org/fulldisclosure/2022/Dec/25
http://seclists.org/fulldisclosure/2022/Dec/24
https://www.mend.io/vulnerability-database/CVE-2022-40303

Severity Score

Weakness Type (CWE)

Integer Overflow or Wraparound

CWE-190

Top Fix

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Upgrade Version

Upgrade to version libxml2 - 2.10.3

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CVSS v3.1

Base Score:
Attack Vector (AV): NETWORK
Attack Complexity (AC): LOW
Privileges Required (PR): NONE
User Interaction (UI): NONE
Scope (S): UNCHANGED
Confidentiality (C): NONE
Integrity (I): NONE
Availability (A): HIGH

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