182 lines
7.1 KiB
JSON
182 lines
7.1 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"dataVersion": "5.2",
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"cveMetadata": {
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"cveId": "CVE-2025-40779",
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"assignerOrgId": "404fd4d2-a609-4245-b543-2c944a302a22",
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"state": "PUBLISHED",
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"assignerShortName": "isc",
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"dateReserved": "2025-04-16T08:44:49.857Z",
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"datePublished": "2025-08-27T20:23:29.489Z",
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"dateUpdated": "2025-11-04T21:10:15.428Z"
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},
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"containers": {
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"cna": {
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"providerMetadata": {
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"orgId": "404fd4d2-a609-4245-b543-2c944a302a22",
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"shortName": "isc",
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"dateUpdated": "2025-08-27T20:23:29.489Z"
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},
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"title": "Kea crash upon interaction between specific client options and subnet selection",
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"datePublic": "2025-08-27T00:00:00.000Z",
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"affected": [
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{
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"vendor": "ISC",
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"product": "Kea",
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"versions": [
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{
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"version": "2.7.1",
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"lessThanOrEqual": "2.7.9",
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"status": "affected",
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"versionType": "custom"
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},
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{
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"version": "3.0.0",
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"status": "affected"
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},
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{
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"version": "3.1.0",
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"status": "affected"
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},
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{
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"version": "2.6.0",
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"lessThanOrEqual": "2.6.4",
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"status": "unaffected",
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"versionType": "custom"
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}
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],
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"defaultStatus": "unaffected"
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}
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],
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"metrics": [
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{
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"cvssV3_1": {
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"version": "3.1",
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"attackVector": "NETWORK",
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"attackComplexity": "LOW",
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"privilegesRequired": "NONE",
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"userInteraction": "NONE",
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"scope": "UNCHANGED",
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"confidentialityImpact": "NONE",
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"integrityImpact": "NONE",
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"availabilityImpact": "HIGH",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
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"baseScore": 7.5,
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"baseSeverity": "HIGH"
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}
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}
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],
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"problemTypes": [
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{
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"descriptions": [
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{
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"lang": "en",
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"type": "CWE",
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"cweId": "CWE-476",
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"description": "CWE-476 NULL Pointer Dereference"
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}
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]
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}
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],
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"descriptions": [
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{
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"lang": "en",
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"value": "If a DHCPv4 client sends a request with some specific options, and Kea fails to find an appropriate subnet for the client, the `kea-dhcp4` process will abort with an assertion failure. This happens only if the client request is unicast directly to Kea; broadcast messages do not cause the problem.\nThis issue affects Kea versions 2.7.1 through 2.7.9, 3.0.0, and 3.1.0."
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}
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],
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"impacts": [
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{
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"descriptions": [
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{
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"lang": "en",
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"value": "Denial of service. A malicious or misconfigured DHCP client can crash the Kea DHCPv4 service by sending a single packet."
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}
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]
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}
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],
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"workarounds": [
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{
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"lang": "en",
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"value": "No workarounds known."
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}
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],
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"exploits": [
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{
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"lang": "en",
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"value": "We are not aware of any active exploits."
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}
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],
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"solutions": [
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{
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"lang": "en",
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"value": "Upgrade to the patched release most closely related to your current version of Kea: 3.0.1 or 3.1.1."
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}
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],
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"credits": [
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{
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"lang": "en",
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"value": "ISC would like to thank the following for bringing this vulnerability to our attention:\n\n* Jochen M.\n* Martin Dinev, Trading212\n* Ashwani Kumar, Post Graduate Institute of Medical Education & Research, Chandigarh, India\n* Bret Giddings, University of Essex\n* Florian Ritterhoff, Munich University of Applied Sciences"
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}
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],
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"references": [
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{
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"url": "https://kb.isc.org/docs/cve-2025-40779",
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"name": "CVE-2025-40779",
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"tags": [
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"vendor-advisory"
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]
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}
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],
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"source": {
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"discovery": "EXTERNAL"
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}
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},
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"adp": [
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{
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"metrics": [
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{
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"other": {
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"type": "ssvc",
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"content": {
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"timestamp": "2025-08-28T14:07:45.683079Z",
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"id": "CVE-2025-40779",
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"options": [
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{
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"Exploitation": "none"
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},
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{
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"Automatable": "yes"
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},
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{
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"Technical Impact": "partial"
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}
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],
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"role": "CISA Coordinator",
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"version": "2.0.3"
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}
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}
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}
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],
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"title": "CISA ADP Vulnrichment",
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"providerMetadata": {
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"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
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"shortName": "CISA-ADP",
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"dateUpdated": "2025-08-28T14:08:05.935Z"
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}
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},
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{
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"title": "CVE Program Container",
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"references": [
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{
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"url": "http://www.openwall.com/lists/oss-security/2025/08/27/1"
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}
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],
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"providerMetadata": {
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"orgId": "af854a3a-2127-422b-91ae-364da2661108",
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"shortName": "CVE",
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"dateUpdated": "2025-11-04T21:10:15.428Z"
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}
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}
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]
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}
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} |