235 lines
9.5 KiB
JSON
235 lines
9.5 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-2026-11331",
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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": "2026-06-05T07:03:42.361Z",
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"datePublished": "2026-07-22T14:10:44.763Z",
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"dateUpdated": "2026-07-22T18:54:17.064Z"
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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": "2026-07-22T14:10:44.763Z"
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},
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"title": "Potential wildcard CNAME RPZ policy bypass",
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"datePublic": "2026-07-22T00:00:00.000Z",
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"affected": [
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{
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"vendor": "ISC",
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"product": "BIND 9",
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"versions": [
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{
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"version": "9.16.0",
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"lessThanOrEqual": "9.18.50",
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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": "9.20.0",
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"lessThanOrEqual": "9.20.24",
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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": "9.21.0",
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"lessThanOrEqual": "9.21.23",
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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": "9.16.8-S1",
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"lessThanOrEqual": "9.18.50-S1",
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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": "9.20.9-S1",
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"lessThanOrEqual": "9.20.24-S1",
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"status": "affected",
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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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"cpeApplicability": [
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{
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"nodes": [
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{
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"operator": "OR",
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"cpeMatch": [
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "9.16.0",
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"versionEndIncluding": "9.18.50"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "9.20.0",
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"versionEndIncluding": "9.20.24"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "9.21.0",
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"versionEndIncluding": "9.21.23"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "9.16.8-S1",
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"versionEndIncluding": "9.18.50-S1"
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},
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{
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"vulnerable": true,
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"criteria": "cpe:2.3:a:isc:bind:*:*:*:*:*:*:*:*",
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"versionStartIncluding": "9.20.9-S1",
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"versionEndIncluding": "9.20.24-S1"
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}
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]
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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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"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": "HIGH",
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"integrityImpact": "NONE",
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"availabilityImpact": "NONE",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
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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-790",
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"description": "CWE-790 Improper Filtering of Special Elements"
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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": "An attacker who knows (or guesses) that a resolver uses RPZ with wildcard CNAME policies can craft query names long enough to trigger a NAMETOOLONG error condition during RPZ processing. This is not handled correctly and may lead to defeating the RPZ rule. It also may lead to an unexpected exit of the BIND 9 software.\nThis issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.24, 9.21.0 through 9.21.23, 9.16.8-S1 through 9.18.50-S1, and 9.20.9-S1 through 9.20.24-S1."
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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": "If such a situation is encountered, the targeted RPZ rule may be bypassed. The condition could also lead to an unexpected exit."
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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 BIND 9: 9.20.26, 9.21.24, or 9.20.26-S1."
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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 Laith Mash'al (0xmshal) for bringing this vulnerability to our attention."
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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-2026-11331",
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"name": "CVE-2026-11331",
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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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"url": "https://downloads.isc.org/isc/bind9/9.20.26",
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"tags": [
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"patch"
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]
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},
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{
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"url": "https://downloads.isc.org/isc/bind9/9.21.24",
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"tags": [
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"patch"
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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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"x_generator": {
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"engine": "cvelib 1.8.0"
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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": "2026-07-22T18:54:08.280433Z",
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"id": "CVE-2026-11331",
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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": "2026-07-22T18:54:17.064Z"
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}
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}
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]
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}
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} |