CVE-2023-33973

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Source
https://cve.org/CVERecord?id=CVE-2023-33973
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-33973.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2023-33973
Aliases
  • GHSA-r2pv-3jqc-vh7w
Published
2023-05-30T16:18:04Z
Modified
2026-10-28T10:38:51Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
RIOT-OS vulnerable to NULL pointer dereference during NHC encoding
Details

RIOT-OS, an operating system for Internet of Things (IoT) devices, contains a network stack with the ability to process 6LoWPAN frames. In versions 2023.01 and prior, an attacker can send a crafted frame which is forwarded by the device. During encoding of the packet a NULL pointer dereference occurs. This crashes the device leading to denial of service. A patch is available at pull request 19678. There are no known workarounds.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-476"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33973.json"
}
References

Affected packages

Git / github.com/riot-os/riot

Affected ranges

Type
GIT
Repo
https://github.com/riot-os/riot
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
c9d7863e5664a169035038628029bb07e090c5ff
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "last_affected": "2023.01"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "c9d7863e5664a169035038628029bb07e090c5ff"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

2013.*
2013.08
2014.*
2014.01
2014.05
2014.12
2015.*
2015.09-RC1
2015.12-RC1
2015.12-devel
2016.*
2016.03-devel
2016.04-RC1
2016.07-RC1
2016.07-RC2
2016.07-devel
2016.10-RC1
2016.10-devel
2017.*
2017.01-RC1
2017.01-devel
2017.04-RC1
2017.04-devel
2017.07-RC1
2017.07-devel
2017.10-RC1
2017.10-devel
2018.*
2018.01-RC1
2018.01-devel
2018.04-RC1
2018.04-devel
2018.07-RC1
2018.07-devel
2018.10-RC1
2018.10-devel
2019.*
2019.01-RC1
2019.01-devel
2019.04-RC1
2019.04-devel
2019.07-RC1
2019.07-devel
2019.10-RC1
2019.10-devel
2020.*
2020.01-RC1
2020.01-devel
2020.04-RC1
2020.04-devel
2020.07-RC1
2020.07-devel
2020.10-RC1
2020.10-devel
2021.*
2021.01-RC1
2021.01-devel
2021.04-RC1
2021.04-devel
2021.07-RC1
2021.07-devel
2021.10-RC1
2021.10-devel
2022.*
2022.01-RC1
2022.01-devel
2022.04-RC1
2022.04-devel
2022.07-RC1
2022.07-devel
2022.10-RC1
2022.10-devel
2023.*
2023.01-RC1
2023.01-devel
2023.04-RC1
2023.04-devel
2023.07-devel

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-33973.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "15511015679730275782084887946349670983",
                "137074587478592179758227792523415616908",
                "159200569700353764915249669267967017271",
                "233349505992850358261843652405185245083",
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                "276511425066122149398233076228546028293",
                "47746851116798360058574666647663553920"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2023-33973-007aff06",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/riot-os/riot/commit/c9d7863e5664a169035038628029bb07e090c5ff",
        "target": {
            "file": "sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "235260897555298100511055151256378913919",
            "length": 658
        },
        "id": "CVE-2023-33973-2397d304",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/riot-os/riot/commit/c9d7863e5664a169035038628029bb07e090c5ff",
        "target": {
            "file": "sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c",
            "function": "gnrc_sixlowpan_iphc_send"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "218019968832957012604830540329861782821",
            "length": 6367
        },
        "id": "CVE-2023-33973-ead95a8c",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/riot-os/riot/commit/c9d7863e5664a169035038628029bb07e090c5ff",
        "target": {
            "file": "sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c",
            "function": "_iphc_ipv6_encode"
        }
    }
]
vanir_signatures_modified 
"2026-10-28T10:38:51Z"