252 lines
12 KiB
JSON
252 lines
12 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-2026-21920",
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"assignerOrgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
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"state": "PUBLISHED",
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"assignerShortName": "juniper",
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"dateReserved": "2026-01-05T17:32:48.712Z",
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"datePublished": "2026-01-15T20:28:10.526Z",
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"dateUpdated": "2026-01-15T20:59:21.070Z"
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},
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"containers": {
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"cna": {
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"affected": [
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{
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"defaultStatus": "unaffected",
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"platforms": [
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"SRX Series"
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],
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"product": "Junos OS",
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"vendor": "Juniper Networks",
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"versions": [
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{
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"lessThan": "23.4R2-S5",
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"status": "affected",
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"version": "23.4",
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"versionType": "semver"
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},
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{
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"lessThan": "24.2R2-S1",
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"status": "affected",
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"version": "24.2",
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"versionType": "semver"
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},
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{
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"lessThan": "24.4R2",
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"status": "affected",
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"version": "24.4",
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"versionType": "semver"
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},
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{
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"lessThan": "23.4R1",
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"status": "unaffected",
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"version": "0",
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"versionType": "semver"
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}
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]
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}
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],
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"configurations": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<span style=\"background-color: rgb(255, 255, 255);\">A device is exposed to this issue when one of the following features are used / configurations are present:<br><br>- GeoIP:<br></span><tt><tt><tt></tt><br><tt><span style=\"background-color: rgb(255, 255, 255);\">[ security dynamic-address address-name <name> profile category GeoIP ... ]<br></span></tt></tt></tt><br><br>- DNS security:<br><br><tt><tt><tt><span style=\"background-color: rgb(255, 255, 255);\">[ services security-metadata-streaming policy <name> dns detections ... ]<br><br>or<br><br>[ services security-intelligence profile <profile-name> category DNS ]<br>[ services security-intelligence profile policy <policy-name> DNS <profile-name> ]<br></span></tt><tt><tt><tt><br><tt>\n\n</tt></tt></tt><tt></tt><tt></tt><tt></tt><tt></tt><tt></tt><tt></tt></tt></tt></tt><tt></tt>"
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}
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],
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"value": "A device is exposed to this issue when one of the following features are used / configurations are present:\n\n- GeoIP:\n\n[ security dynamic-address address-name <name> profile category GeoIP ... ]\n\n\n- DNS security:\n\n[ services security-metadata-streaming policy <name> dns detections ... ]\n\nor\n\n[ services security-intelligence profile <profile-name> category DNS ]\n[ services security-intelligence profile policy <policy-name> DNS <profile-name> ]"
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}
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],
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"datePublic": "2026-01-14T17:00:00.000Z",
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"descriptions": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "<span style=\"background-color: rgb(255, 255, 255);\">An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).</span><br>\n\n<br><br>If an SRX Series device configured for DNS processing, receives a specifically formatted DNS request flowd will crash and restart, which causes a service interruption until the process has recovered.<br><br><p>This issue affects Junos OS on SRX Series:</p><p></p><ul><li>23.4 versions before 23.4R2-S5,</li><li>24.2 versions before 24.2R2-S1,</li><li>24.4 versions before 24.4R2.</li></ul><p></p>\n\n<p>This issue does not affect Junos OS versions before 23.4R1.</p>"
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}
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],
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"value": "An Unchecked Return Value vulnerability in the DNS module of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS).\n\n\n\n\nIf an SRX Series device configured for DNS processing, receives a specifically formatted DNS request flowd will crash and restart, which causes a service interruption until the process has recovered.\n\nThis issue affects Junos OS on SRX Series:\n\n\n\n * 23.4 versions before 23.4R2-S5,\n * 24.2 versions before 24.2R2-S1,\n * 24.4 versions before 24.4R2.\n\n\n\n\n\n\nThis issue does not affect Junos OS versions before 23.4R1."
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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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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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}
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],
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"value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability."
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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": 7.5,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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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:N/I:N/A:H",
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"version": "3.1"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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]
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},
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{
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"cvssV4_0": {
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"Automatable": "YES",
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"Recovery": "AUTOMATIC",
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"Safety": "NOT_DEFINED",
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"attackComplexity": "LOW",
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"attackRequirements": "NONE",
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"attackVector": "NETWORK",
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"baseScore": 8.7,
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"baseSeverity": "HIGH",
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"privilegesRequired": "NONE",
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"providerUrgency": "NOT_DEFINED",
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"subAvailabilityImpact": "LOW",
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"subConfidentialityImpact": "NONE",
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"subIntegrityImpact": "NONE",
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"userInteraction": "NONE",
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"valueDensity": "NOT_DEFINED",
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"vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/RE:M",
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"version": "4.0",
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"vulnAvailabilityImpact": "HIGH",
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"vulnConfidentialityImpact": "NONE",
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"vulnIntegrityImpact": "NONE",
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"vulnerabilityResponseEffort": "MODERATE"
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},
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"format": "CVSS",
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"scenarios": [
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{
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"lang": "en",
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"value": "GENERAL"
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}
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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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"cweId": "CWE-252",
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"description": "CWE-252 Unchecked Return Value",
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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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"providerMetadata": {
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"orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968",
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"shortName": "juniper",
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"dateUpdated": "2026-01-15T20:28:10.526Z"
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},
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"references": [
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://supportportal.juniper.net/JSA106020"
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},
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{
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"tags": [
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"vendor-advisory"
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],
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"url": "https://kb.juniper.net/JSA106020"
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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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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "The following software releases have been updated to resolve this specific issue: 23.4R2-S5, 24.2R2-S1, 24.4R2, 24.4R2-S1, 25.2R1, and all subsequent releases."
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}
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],
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"value": "The following software releases have been updated to resolve this specific issue: 23.4R2-S5, 24.2R2-S1, 24.4R2, 24.4R2-S1, 25.2R1, and all subsequent releases."
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}
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],
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"source": {
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"advisory": "JSA106020",
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"defect": [
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"1851909"
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],
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"discovery": "USER"
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},
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"title": "Junos OS: SRX Series: If a specific request is processed by the DNS subsystem flowd will crash",
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"workarounds": [
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{
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"lang": "en",
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"supportingMedia": [
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{
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"base64": false,
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"type": "text/html",
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"value": "There are no known workarounds for this issue."
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}
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],
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"value": "There are no known workarounds for this issue."
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}
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],
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"x_generator": {
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"engine": "Vulnogram 0.1.0-dev"
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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": "2026-01-15T20:58:50.543674Z",
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"id": "CVE-2026-21920",
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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": "2026-01-15T20:59:21.070Z"
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}
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}
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]
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}
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} |