2023-09-15 22:00:28 +00:00

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{
"id": "CVE-2023-37459",
"sourceIdentifier": "security-advisories@github.com",
"published": "2023-09-15T20:15:08.650",
"lastModified": "2023-09-15T20:15:08.650",
"vulnStatus": "Received",
"descriptions": [
{
"lang": "en",
"value": "Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP header has been received. Specifically, the implementation attempts to access the flags field from the TCP buffer in the following conditional expression in the `check_for_tcp_syn` function. For this reason, an attacker can inject a truncated TCP packet, which will lead to an out-of-bound read from the packet buffer. As of time of publication, a patched version is not available. As a workaround, one can apply the changes in Contiki-NG pull request #2510 to patch the system."
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "security-advisories@github.com",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "NONE",
"userInteraction": "NONE",
"scope": "UNCHANGED",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"availabilityImpact": "NONE",
"baseScore": 5.3,
"baseSeverity": "MEDIUM"
},
"exploitabilityScore": 3.9,
"impactScore": 1.4
}
]
},
"weaknesses": [
{
"source": "security-advisories@github.com",
"type": "Primary",
"description": [
{
"lang": "en",
"value": "CWE-125"
}
]
}
],
"references": [
{
"url": "https://github.com/contiki-ng/contiki-ng/pull/2510",
"source": "security-advisories@github.com"
},
{
"url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-6648-m23r-hq8c",
"source": "security-advisories@github.com"
}
]
}