168 lines
7.2 KiB
JSON
168 lines
7.2 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-2026-53921",
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"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"state": "PUBLISHED",
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"assignerShortName": "GitHub_M",
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"dateReserved": "2026-06-11T15:46:12.316Z",
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"datePublished": "2026-10-23T13:20:30.249Z",
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"dateUpdated": "2026-10-29T13:28:11.455Z"
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},
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"containers": {
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"cna": {
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"title": "odhcpd: Stack buffer overflow in DHCPv6 IA reply serialization (2 independent sites)",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-121",
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"lang": "en",
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"description": "CWE-121: Stack-based Buffer Overflow",
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"type": "CWE"
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}
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]
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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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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 9.8,
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"baseSeverity": "CRITICAL",
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"confidentialityImpact": "HIGH",
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"integrityImpact": "HIGH",
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"privilegesRequired": "NONE",
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"scope": "UNCHANGED",
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"userInteraction": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
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"version": "3.1"
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}
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}
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],
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"references": [
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{
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"name": "https://github.com/openwrt/odhcpd/security/advisories/GHSA-7fwx-hhrg-3496",
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"tags": [
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"x_refsource_CONFIRM"
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],
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"url": "https://github.com/openwrt/odhcpd/security/advisories/GHSA-7fwx-hhrg-3496"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/0320032ae313452f3c8cb8725c621dd06c36dc03",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/openwrt/odhcpd/commit/0320032ae313452f3c8cb8725c621dd06c36dc03"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/03dacc23356b5789842b9d1bba0200fd005e35f3",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/openwrt/odhcpd/commit/03dacc23356b5789842b9d1bba0200fd005e35f3"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/2a42d34c3615e2449ca273f673eee7c429d819a9",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/openwrt/odhcpd/commit/2a42d34c3615e2449ca273f673eee7c429d819a9"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/6634b7a3c79c41a27687925c98c35c8aea2f2b5a",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/openwrt/odhcpd/commit/6634b7a3c79c41a27687925c98c35c8aea2f2b5a"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/d168c27fb6a55a07ac4c888e09ff2f41e263d7b7",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/openwrt/odhcpd/commit/d168c27fb6a55a07ac4c888e09ff2f41e263d7b7"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/d329a15413387027453644cd363dca06ade28328",
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"tags": [
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"x_refsource_MISC"
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],
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"url": "https://github.com/openwrt/odhcpd/commit/d329a15413387027453644cd363dca06ade28328"
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}
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],
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"affected": [
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{
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"vendor": "openwrt",
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"product": "odhcpd",
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"versions": [
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{
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"version": "< 25.12",
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"status": "affected"
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}
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]
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}
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],
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"providerMetadata": {
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"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
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"shortName": "GitHub_M",
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"dateUpdated": "2026-10-23T13:20:30.249Z"
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},
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"descriptions": [
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{
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"lang": "en",
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"value": "odhcpd is the DHCPv6, DHCPv4, and router-advertisement server used by OpenWrt. Prior to version 25.12, odhcpd's DHCPv6 IA response handler writes past the end of a fixed 512-byte stack buffer (pdbuf) when a single DHCPv6 REQUEST carries enough IA options to nearly exhaust the reply space. Two independent overflow sites exist in the same call chain, both reachable from the network via a single unauthenticated UDP packet. odhcpd runs as root on OpenWrt; embedded targets often lack stack canaries and ASLR, making code execution realistic. This issue has been patched in version 25.12."
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}
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],
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"source": {
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"advisory": "GHSA-7fwx-hhrg-3496",
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"discovery": "UNKNOWN"
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}
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},
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"adp": [
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{
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"references": [
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{
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"url": "https://github.com/openwrt/odhcpd/security/advisories/GHSA-7fwx-hhrg-3496",
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"tags": [
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"exploit"
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]
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}
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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": "2026-10-29T13:27:12.914498Z",
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"id": "CVE-2026-53921",
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"options": [
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{
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"Exploitation": "poc"
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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": "total"
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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": "2026-10-29T13:28:11.455Z"
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}
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}
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]
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}
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} |