Vulnerability Name:

CVE-2021-45958 (CCN-216472)

Assigned:2021-07-10
Published:2021-07-10
Updated:2022-09-10
Summary:UltraJSON (aka ujson) through 5.1.0 has a stack-based buffer overflow in Buffer_AppendIndentUnchecked (called from encode). Exploitation can, for example, use a large amount of indentation.
CVSS v3 Severity:5.5 Medium (CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
5.5 Medium (CCN CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H)
4.8 Medium (CCN Temporal CVSS v3.1 Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C)
Exploitability Metrics:Attack Vector (AV): Local
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): Required
Scope:Scope (S): Unchanged
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): High
CVSS v2 Severity:4.3 Medium (CVSS v2 Vector: AV:N/AC:M/Au:N/C:N/I:N/A:P)
Exploitability Metrics:Access Vector (AV): Network
Access Complexity (AC): Medium
Authentication (Au): None
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Partial
4.6 Medium (CCN CVSS v2 Vector: AV:L/AC:L/Au:S/C:N/I:N/A:C)
Exploitability Metrics:Access Vector (AV): Local
Access Complexity (AC): Low
Athentication (Au): Single_Instance
Impact Metrics:Confidentiality (C): None
Integrity (I): None
Availibility (A): Complete
Vulnerability Type:CWE-787
Vulnerability Consequences:Denial of Service
References:Source: MITRE
Type: CNA
CVE-2021-45958

Source: CCN
Type: Google Security Research Issue 36009
ujson:hypothesis_structured_fuzzer: Stack-buffer-overflow in Buffer_AppendIndentUnchecked

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=36009

Source: XF
Type: UNKNOWN
ultrajson-cve202145958-dos(216472)

Source: MISC
Type: Exploit, Third Party Advisory
https://github.com/google/oss-fuzz-vulns/blob/main/vulns/ujson/OSV-2021-955.yaml

Source: CCN
Type: ultrajson GIT Repository
Strip debugging symbols from Linux binaries

Source: MISC
Type: Exploit, Issue Tracking, Third Party Advisory
https://github.com/ultrajson/ultrajson/issues/501

Source: MISC
Type: Issue Tracking, Patch, Third Party Advisory
https://github.com/ultrajson/ultrajson/issues/502#issuecomment-1031747284

Source: CONFIRM
Type: Patch, Third Party Advisory
https://github.com/ultrajson/ultrajson/pull/504

Source: MLIST
Type: Mailing List, Third Party Advisory
[debian-lts-announce] 20220226 [SECURITY] [DLA 2929-1] ujson security update

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-dbf6e00ba8

Source: FEDORA
Type: Mailing List, Third Party Advisory
FEDORA-2022-33e816bc37

Source: FEDORA
Type: Mailing List, Patch, Third Party Advisory
FEDORA-2022-d1452fd421

Source: FEDORA
Type: Mailing List, Patch, Third Party Advisory
FEDORA-2022-569b6b45e2

Source: CCN
Type: IBM Security Bulletin 6854981 (Cloud Pak for Security)
IBM Cloud Pak for Security includes components with multiple known vulnerabilities

Source: CCN
Type: WhiteSource Vulnerability Database
CVE-2021-45958

Vulnerable Configuration:Configuration 1:
  • cpe:/a:ultrajson_project:ultrajson:*:*:*:*:*:python:*:* (Version < 5.2.0)

    • Configuration 2:
  • cpe:/o:debian:debian_linux:9.0:*:*:*:*:*:*:*

    • Configuration 3:
  • cpe:/o:fedoraproject:fedora:35:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:36:*:*:*:*:*:*:*
  • OR cpe:/o:fedoraproject:fedora:37:*:*:*:*:*:*:*

    • Configuration CCN 1:
  • cpe:/a:ultrajson_project:ultrajson:4.0.2:*:*:*:*:python:*:*
  • OR cpe:/a:ultrajson_project:ultrajson:5.0.0:*:*:*:*:python:*:*
  • AND
  • cpe:/a:ibm:cloud_pak_for_security:1.10.0.0:*:*:*:*:*:*:*
  • OR cpe:/a:ibm:cloud_pak_for_security:1.10.6.0:*:*:*:*:*:*:*

    • * Denotes that component is vulnerable
    Oval Definitions
    Definition IDClassTitleLast Modified
    oval:org.opensuse.security:def:8062
    P
    		python3-ujson-1.35-150100.3.8.1 on GA media (Moderate)
    2023-06-20
    BACK
    ultrajson_project ultrajson *
    debian debian linux 9.0
    fedoraproject fedora 35
    fedoraproject fedora 36
    fedoraproject fedora 37
    ultrajson_project ultrajson 4.0.2
    ultrajson_project ultrajson 5.0.0
    ibm cloud pak for security 1.10.0.0
    ibm cloud pak for security 1.10.6.0