147 lines
6.0 KiB
JSON
147 lines
6.0 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-2026-55606",
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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": "2026-06-16T23:31:22.445Z",
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"datePublished": "2026-10-23T13:21:21.038Z",
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"dateUpdated": "2026-10-29T17:43:41.478Z"
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},
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"containers": {
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"cna": {
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"title": "odhcpd: Stack buffer overread via DUID length endianness mismatch in memcmp()",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-126",
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"lang": "en",
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"description": "CWE-126: Buffer Over-read",
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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": "LOW",
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"baseScore": 6.5,
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"baseSeverity": "MEDIUM",
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"confidentialityImpact": "LOW",
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"integrityImpact": "NONE",
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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:L/I:N/A:L",
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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-x8x4-7gvf-gp45",
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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-x8x4-7gvf-gp45"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/pull/401",
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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/pull/401"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/6907f28f9ddeef9f69f5ee10bbc9ba8adc0ef57f",
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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/6907f28f9ddeef9f69f5ee10bbc9ba8adc0ef57f"
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},
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{
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"name": "https://github.com/openwrt/odhcpd/commit/ed38cffa927d5fd450d20bfd3f7fb8d8e8fff301",
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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/ed38cffa927d5fd450d20bfd3f7fb8d8e8fff301"
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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": "2026-10-23T13:21:21.038Z"
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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. In versions 25.12 and prior, odhcpd's DHCPv6 self-loop detection at dhcpv6.c:720 uses a network-byte-order DUID length value directly as the memcmp() size parameter. On little-endian hosts, this causes memcmp() to read far beyond the stack buffer — a single unauthenticated DHCPv6 packet triggers a 2560-byte overread from a 128-byte buffer. At time of publication, there are no publicly available patches."
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}
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],
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"source": {
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"advisory": "GHSA-x8x4-7gvf-gp45",
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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-x8x4-7gvf-gp45",
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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": "2026-10-29T17:43:15.504706Z",
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"id": "CVE-2026-55606",
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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": "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": "2026-10-29T17:43:41.478Z"
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}
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}
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]
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}
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} |