CVE-2022-31117 Double free of buffer during string decoding in ujson

2022-07-0517:30:13

CWE-415

GitHub_M

www.cve.org

cve-2022-31117

ujson

buffer double free

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

AI Score

6.7

Confidence

High

EPSS

0.002

Percentile

57.7%

JSON

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.

CNA Affected

[
  {
    "product": "ultrajson",
    "vendor": "ultrajson",
    "versions": [
      {
        "status": "affected",
        "version": "< 5.4.0"
      }
    ]
  }
]