CVE-2022-40303
Published: August 31, 2023Last modified: August 31, 2023
Description
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack Vector | NETWORK |
| Attack complexity | LOW |
| Privileges required | NONE |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | NONE |
| Integrity impact | NONE |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | libxml2 | Not affected (2.10.4-r0) |
| Stream | libxml2 | Not affected (2.11.5-r0) |
References
- http://seclists.org/fulldisclosure/2022/Dec/21
- http://seclists.org/fulldisclosure/2022/Dec/24
- http://seclists.org/fulldisclosure/2022/Dec/25
- http://seclists.org/fulldisclosure/2022/Dec/26
- http://seclists.org/fulldisclosure/2022/Dec/27
- https://gitlab.gnome.org/GNOME/libxml2/-/commit/c846986356fc149915a74972bf198abc266bc2c0
- https://gitlab.gnome.org/GNOME/libxml2/-/tags/v2.10.3
- https://security.netapp.com/advisory/ntap-20221209-0003/
- https://support.apple.com/kb/HT213531
- https://support.apple.com/kb/HT213533
- https://support.apple.com/kb/HT213534
- https://support.apple.com/kb/HT213535
- https://support.apple.com/kb/HT213536