291 lines
12 KiB
JSON
291 lines
12 KiB
JSON
{
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"dataType": "CVE_RECORD",
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"cveMetadata": {
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"cveId": "CVE-2026-93009",
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"assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
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"dateReserved": "2026-09-17T14:35:34.562Z",
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"datePublished": "2026-10-29T13:13:34.504Z",
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"dateUpdated": "2026-11-06T19:57:49.419Z"
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},
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"containers": {
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"cna": {
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"title": "Dnsmasq: dnsmasq: heap out-of-bounds read in dhcpv6 option 39 fqdn decoder",
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"metrics": [
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{
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"other": {
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{
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"cvssV3_1": {
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"attackComplexity": "LOW",
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"attackVector": "ADJACENT_NETWORK",
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"availabilityImpact": "NONE",
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"baseScore": 4.3,
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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:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
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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": "A flaw was found in dnsmasq. The DHCPv6 client hostname parser can read one byte past the end of a crafted FQDN option because it checks the next label length before confirming the pointer is still inside the option. An attacker on the local network can trigger this with a single DHCPv6 packet. The extra byte is not returned to the client or logged, and no crash has been demonstrated."
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}
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"vendor": "Red Hat",
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"product": "Red Hat Enterprise Linux 10",
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"packageName": "dnsmasq",
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{
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"cpe:/a:redhat:openshift:5"
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenStack Platform 13 (Queens)",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "dnsmasq",
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"cpe:/a:redhat:openstack:13"
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{
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"vendor": "Red Hat",
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"product": "Red Hat OpenStack Platform 18.0",
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"collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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"packageName": "rhoso-operators/infra-rhel9-operator",
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"references": [
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{
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"url": "https://access.redhat.com/security/cve/CVE-2026-93009",
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"tags": [
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"vdb-entry",
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]
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},
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{
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"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2536083",
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"name": "RHBZ#2536083",
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"tags": [
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"issue-tracking",
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]
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}
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],
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"datePublic": "2026-10-28T09:30:00.000Z",
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"problemTypes": [
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{
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"descriptions": [
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{
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"cweId": "CWE-125",
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"description": "Out-of-bounds Read",
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"lang": "en",
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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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"x_redhatCweChain": "CWE-125: Out-of-bounds Read",
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"workarounds": [
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{
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"lang": "en",
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"value": "The following measures reduce risk:\n\n1. If DHCPv6 is not required, do not configure any IPv6 dhcp-range.\n2. Compile without DHCPv6 using COPTS=-DNO_DHCP6 if IPv6 DHCP is not needed.\n3. Restrict dnsmasq to trusted interfaces with --interface=<iface>."
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}
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],
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"timeline": [
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{
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"lang": "en",
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"time": "2026-09-14T00:00:00.000Z",
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"value": "Reported to Red Hat."
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},
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{
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"lang": "en",
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"time": "2026-10-28T09:30:00.000Z",
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"value": "Made public."
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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": "Red Hat would like to thank Shubham Raj (Causal Security) for reporting this issue."
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}
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],
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"dateUpdated": "2026-11-06T19:57:49.419Z"
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},
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"timestamp": "2026-11-04T01:14:28.692879Z",
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"id": "CVE-2026-93009",
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"options": [
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{
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"Exploitation": "none"
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{
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"Automatable": "no"
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{
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"Technical Impact": "partial"
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} |