CVE-2022-31117

Double free of buffer during string decoding in ujson

Severity Score

5.9

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

UltraJSON is a fast JSON encoder and decoder written in pure C with bindings for Python 3.7+. In versions prior to 5.4.0 an error occurring while reallocating a buffer for string decoding can cause the buffer to get freed twice. Due to how UltraJSON uses the internal decoder, this double free is impossible to trigger from Python. This issue has been resolved in version 5.4.0 and all users should upgrade to UltraJSON 5.4.0. There are no known workarounds for this issue.

UltraJSON es un codificador y decodificador JSON rápido escrito en C puro con enlaces para Python versiones 3.7+. En versiones anteriores a la 5.4.0, un error al reasignar un búfer para la decodificación de cadenas puede hacer que el búfer se libere dos veces. Debido a cómo UltraJSON usa el decodificador interno, esta doble liberación es imposible de activar desde Python. Este problema ha sido resuelto en la versión 5.4.0 y todos los usuarios deben actualizar a UltraJSON 5.4.0. No se conocen mitigaciones adicionales para este problema

*Credits: N/A

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-05-18 CVE Reserved
2022-07-05 CVE Published
2024-02-24 EPSS Updated
2024-08-03 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-415: Double Free

CAPEC

References (6)

URL	Tag	Source
https://github.com/ultrajson/ultrajson/security/advisories/GHSA-fm67-cv37-96ff	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
https://github.com/ultrajson/ultrajson/commit/9c20de0f77b391093967e25d01fb48671104b15b	2023-11-07

URL	Date	SRC
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/NAU5N4A7EUK2AMUCOLYDD5ARXAJYZBD2	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPPU5FZP3LCTXYORFH7NHUMYA5X66IA7	2023-11-07
https://access.redhat.com/security/cve/CVE-2022-31117	2022-12-07
https://bugzilla.redhat.com/show_bug.cgi?id=2104739	2022-12-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Ultrajson Project Search vendor "Ultrajson Project"		Ultrajson Search vendor "Ultrajson Project" for product "Ultrajson"				< 5.4.0 Search vendor "Ultrajson Project" for product "Ultrajson" and version " < 5.4.0"		python		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				35 Search vendor "Fedoraproject" for product "Fedora" and version "35"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				36 Search vendor "Fedoraproject" for product "Fedora" and version "36"		-		Affected