CVE-2023-3107 (GCVE-0-2023-3107)

Vulnerability from cvelistv5 – Published: 2023-08-01 22:01 – Updated: 2025-07-09 13:45
VLAI?
Summary
A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet's payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service.
Severity ?
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • CWE-190 - Integer Overflow or Wraparound
Assigner
References
Impacted products
Vendor Product Version
FreeBSD FreeBSD Affected: 13.2-RELEASE , < 13.2-RELEASE-p2 (release)
Affected: 13.1-RELEASE , < 13.1-RELEASE-p9 (release)
Affected: 12.4-RELEASE , < 12.4-RELEASE-p4 (release)
Create a notification for this product.
Credits
Zweig of Kunlun Lab
Show details on NVD website
To clipboard 

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    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://security.FreeBSD.org/advisories/FreeBSD-SA-23:06.ipv6.asc\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20230804-0001/\", \"tags\": [\"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-02T06:48:07.287Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.5, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"NONE\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-3107\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"yes\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-22T14:17:58.945668Z\"}}}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-22T14:18:25.494Z\"}}], \"cna\": {\"title\": \"Remote denial of service in IPv6 fragment reassembly\", \"source\": {\"advisory\": \"FreeBSD-SA-23:06.ipv6\", \"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Zweig of Kunlun Lab\"}], \"impacts\": [{\"capecId\": \"CAPEC-128\", \"descriptions\": [{\"lang\": \"en\", \"value\": \"CAPEC-128 Integer Attacks\"}]}], \"affected\": [{\"vendor\": \"FreeBSD\", \"modules\": [\"ipv6\"], \"product\": \"FreeBSD\", \"versions\": [{\"status\": \"affected\", \"version\": \"13.2-RELEASE\", \"lessThan\": \"13.2-RELEASE-p2\", \"versionType\": \"release\"}, {\"status\": \"affected\", \"version\": \"13.1-RELEASE\", \"lessThan\": \"13.1-RELEASE-p9\", \"versionType\": \"release\"}, {\"status\": \"affected\", \"version\": \"12.4-RELEASE\", \"lessThan\": \"12.4-RELEASE-p4\", \"versionType\": \"release\"}], \"defaultStatus\": \"unknown\"}], \"references\": [{\"url\": \"https://security.FreeBSD.org/advisories/FreeBSD-SA-23:06.ipv6.asc\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://security.netapp.com/advisory/ntap-20230804-0001/\"}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"Users with IPv6 disabled on untrusted network interfaces are not affected.  Such interfaces will have the IFDISABLED nd6 flag set in ifconfig(8).\\n\\nThe kernel may be configured to drop all IPv6 fragments by setting the net.inet6.ip6.maxfrags sysctl to 0.  Doing so will prevent the bug from being triggered, with the caveat that legitimate IPv6 fragments will be dropped.\\n\\nIf the pf(4) firewall is enabled, and scrubbing and fragment reassembly is enabled on untrusted interfaces, the bug cannot be triggered.  This is the default if pf(4) is enabled.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"Users with IPv6 disabled on untrusted network interfaces are not affected.  Such interfaces will have the IFDISABLED nd6 flag set in ifconfig(8).\u003cbr\u003e\u003cbr\u003eThe kernel may be configured to drop all IPv6 fragments by setting the net.inet6.ip6.maxfrags sysctl to 0.  Doing so will prevent the bug from being triggered, with the caveat that legitimate IPv6 fragments will be dropped.\u003cbr\u003e\u003cbr\u003eIf the pf(4) firewall is enabled, and scrubbing and fragment reassembly is enabled on untrusted interfaces, the bug cannot be triggered.  This is the default if pf(4) is enabled.\u003cbr\u003e\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet\u0027s payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"A set of carefully crafted ipv6 packets can trigger an integer overflow in the calculation of a fragment reassembled packet\u0027s payload length field. This allows an attacker to trigger a kernel panic, resulting in a denial of service.\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-190\", \"description\": \"CWE-190 Integer Overflow or Wraparound\"}]}], \"providerMetadata\": {\"orgId\": \"63664ac6-956c-4cba-a5d0-f46076e16109\", \"shortName\": \"freebsd\", \"dateUpdated\": \"2023-08-04T22:06:22.777Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-3107\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-07-09T13:45:34.790Z\", \"dateReserved\": \"2023-06-05T14:10:11.626Z\", \"assignerOrgId\": \"63664ac6-956c-4cba-a5d0-f46076e16109\", \"datePublished\": \"2023-08-01T22:01:07.584Z\", \"assignerShortName\": \"freebsd\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


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Sightings

Author Source Type Date

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.