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ID

VAR-202208-0257


CVE

CVE-2021-32771


TITLE

Contiki-NG  Classic buffer overflow vulnerability in

Trust: 0.8

sources: JVNDB: JVNDB-2021-020139

DESCRIPTION

Contiki-NG is an open-source, cross-platform operating system for IoT devices. In affected versions it is possible to cause a buffer overflow when copying an IPv6 address prefix in the RPL-Classic implementation in Contiki-NG. In order to trigger the vulnerability, the Contiki-NG system must have joined an RPL DODAG. After that, an attacker can send a DAO packet with a Target option that contains a prefix length larger than 128 bits. The problem was fixed after the release of Contiki-NG 4.7. Users unable to upgrade may apply the patch in Contiki-NG PR #1615. Contiki-NG Exists in a classic buffer overflow vulnerability.Information is obtained, information is tampered with, and service operation is interrupted. (DoS) It may be in a state

Trust: 2.25

sources: NVD: CVE-2021-32771 // JVNDB: JVNDB-2021-020139 // CNNVD: CNNVD-202208-2179 // VULMON: CVE-2021-32771

AFFECTED PRODUCTS

vendor:contiki ngmodel:contiki-ngscope:ltversion:4.8

Trust: 1.0

vendor:contiki ngmodel:contiki-ngscope: - version: -

Trust: 0.8

vendor:contiki ngmodel:contiki-ngscope:eqversion:4.8

Trust: 0.8

vendor:contiki ngmodel:contiki-ngscope:eqversion: -

Trust: 0.8

sources: JVNDB: JVNDB-2021-020139 // NVD: CVE-2021-32771

CVSS

SEVERITY

CVSSV2

CVSSV3

nvd@nist.gov: CVE-2021-32771
value: HIGH

Trust: 1.0

security-advisories@github.com: CVE-2021-32771
value: HIGH

Trust: 1.0

NVD: CVE-2021-32771
value: HIGH

Trust: 0.8

CNNVD: CNNVD-202208-2179
value: HIGH

Trust: 0.6

nvd@nist.gov: CVE-2021-32771
baseSeverity: HIGH
baseScore: 8.1
vectorString: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: 2.2
impactScore: 5.9
version: 3.1

Trust: 2.0

NVD: CVE-2021-32771
baseSeverity: HIGH
baseScore: 8.1
vectorString: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
attackVector: NETWORK
attackComplexity: HIGH
privilegesRequired: NONE
userInteraction: NONE
scope: UNCHANGED
confidentialityImpact: HIGH
integrityImpact: HIGH
availabilityImpact: HIGH
exploitabilityScore: NONE
impactScore: NONE
version: 3.0

Trust: 0.8

sources: JVNDB: JVNDB-2021-020139 // CNNVD: CNNVD-202208-2179 // NVD: CVE-2021-32771 // NVD: CVE-2021-32771

PROBLEMTYPE DATA

problemtype:CWE-120

Trust: 1.0

problemtype:Classic buffer overflow (CWE-120) [ others ]

Trust: 0.8

sources: JVNDB: JVNDB-2021-020139 // NVD: CVE-2021-32771

THREAT TYPE

remote

Trust: 0.6

sources: CNNVD: CNNVD-202208-2179

TYPE

other

Trust: 0.6

sources: CNNVD: CNNVD-202208-2179

PATCH

title:Contiki-NG Security vulnerabilitiesurl:http://www.cnnvd.org.cn/web/xxk/bdxqById.tag?id=203551

Trust: 0.6

sources: CNNVD: CNNVD-202208-2179

EXTERNAL IDS

db:NVDid:CVE-2021-32771

Trust: 3.3

db:JVNDBid:JVNDB-2021-020139

Trust: 0.8

db:CNNVDid:CNNVD-202208-2179

Trust: 0.6

db:VULMONid:CVE-2021-32771

Trust: 0.1

sources: VULMON: CVE-2021-32771 // JVNDB: JVNDB-2021-020139 // CNNVD: CNNVD-202208-2179 // NVD: CVE-2021-32771

REFERENCES

url:https://github.com/contiki-ng/contiki-ng/pull/1615/commits/587ae59956e00316fd44fd7072ac3a6a07b4b20f

Trust: 2.5

url:https://github.com/contiki-ng/contiki-ng/security/advisories/ghsa-jqjf-v7v9-xp6w

Trust: 2.5

url:https://github.com/contiki-ng/contiki-ng/releases/tag/release%2fv4.8

Trust: 2.5

url:https://github.com/contiki-ng/contiki-ng/pull/1615

Trust: 1.9

url:https://nvd.nist.gov/vuln/detail/cve-2021-32771

Trust: 0.8

url:https://cxsecurity.com/cveshow/cve-2021-32771/

Trust: 0.6

url:https://cwe.mitre.org/data/definitions/120.html

Trust: 0.1

url:https://nvd.nist.gov

Trust: 0.1

sources: VULMON: CVE-2021-32771 // JVNDB: JVNDB-2021-020139 // CNNVD: CNNVD-202208-2179 // NVD: CVE-2021-32771

SOURCES

db:VULMONid:CVE-2021-32771
db:JVNDBid:JVNDB-2021-020139
db:CNNVDid:CNNVD-202208-2179
db:NVDid:CVE-2021-32771

LAST UPDATE DATE

2024-08-14T13:21:54.211000+00:00


SOURCES UPDATE DATE

db:VULMONid:CVE-2021-32771date:2022-08-04T00:00:00
db:JVNDBid:JVNDB-2021-020139date:2023-09-15T08:11:00
db:CNNVDid:CNNVD-202208-2179date:2022-08-11T00:00:00
db:NVDid:CVE-2021-32771date:2022-08-10T18:08:13.533

SOURCES RELEASE DATE

db:VULMONid:CVE-2021-32771date:2022-08-04T00:00:00
db:JVNDBid:JVNDB-2021-020139date:2023-09-15T00:00:00
db:CNNVDid:CNNVD-202208-2179date:2022-08-04T00:00:00
db:NVDid:CVE-2021-32771date:2022-08-04T21:15:07.907