PyPi: Ujson

CVE-2022-31117

Safety vulnerability ID: 49755

This vulnerability was reviewed by experts

The information on this page was manually curated by our Cybersecurity Intelligence Team.

Created at Jul 05, 2022 Updated at Mar 29, 2024
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Advisory

Ujson 5.4.0 includes a fix for CVE-2022-31117: 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.
https://github.com/ultrajson/ultrajson/security/advisories/GHSA-fm67-cv37-96ff

Affected package

ujson

Latest version: 5.9.0

Ultra fast JSON encoder and decoder for Python

Affected versions

Fixed versions

Vulnerability changelog

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. See CVE-2022-31117.


CONFIRM:https://github.com/ultrajson/ultrajson/security/advisories/GHSA-fm67-cv37-96ff: https://github.com/ultrajson/ultrajson/security/advisories/GHSA-fm67-cv37-96ff
MISC:https://github.com/ultrajson/ultrajson/commit/9c20de0f77b391093967e25d01fb48671104b15b: https://github.com/ultrajson/ultrajson/commit/9c20de0f77b391093967e25d01fb48671104b15b

Resources

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Severity Details

CVSS Base Score

MEDIUM 5.9

CVSS v3 Details

MEDIUM 5.9
Attack Vector (AV)
NETWORK
Attack Complexity (AC)
HIGH
Privileges Required (PR)
NONE
User Interaction (UI)
NONE
Scope (S)
UNCHANGED
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Availability (A)
HIGH

CVSS v2 Details

MEDIUM 4.3
Access Vector (AV)
NETWORK
Access Complexity (AC)
MEDIUM
Authentication (Au)
NONE
Confidentiality Impact (C)
NONE
Integrity Impact (I)
NONE
Availability Impact (A)
PARTIAL