CVE-2025-21590 (GCVE-0-2025-21590)
Vulnerability from cvelistv5
Published
2025-03-12 13:59
Modified
2025-04-14 07:16
Severity ?
4.4 (Medium) - CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
6.7 (Medium) - CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
Summary
An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device. A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device. This issue is not exploitable from the Junos CLI. This issue affects Junos OS:  * All versions before 21.2R3-S9, * 21.4 versions before 21.4R3-S10,  * 22.2 versions before 22.2R3-S6,  * 22.4 versions before 22.4R3-S6,  * 23.2 versions before 23.2R2-S3,  * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R1-S2, 24.2R2.
References
sirt@juniper.nethttps://cloud.google.com/blog/topics/threat-intelligence/china-nexus-espionage-targets-juniper-routersThird Party Advisory
sirt@juniper.nethttps://supportportal.juniper.net/JSA93446Vendor Advisory
Impacted products
Vendor Product Version
Juniper Networks Junos OS Version: 0   ≤
Version: 21.4   ≤
Version: 22.2   ≤
Version: 22.4   ≤
Version: 23.2   ≤
Version: 23.4   ≤
Version: 24.2   ≤
Create a notification for this product.
CISA Known exploited vulnerability
Data from the Known Exploited Vulnerabilities Catalog

Date added: 2025-03-13

Due date: 2025-04-03

Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

Used in ransomware: Unknown

Notes: https://supportportal.juniper.net/s/article/2025-03-Out-of-Cycle-Security-Bulletin-Junos-OS-A-local-attacker-with-shell-access-can-execute-arbitrary-code-CVE-2025-21590?language=en_US ; https://nvd.nist.gov/vuln/detail/CVE-2025-21590

Show details on NVD website

To clipboard 

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      vulnrichment: {
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Note: Amazon found the issue during internal security research and not due to exploitation.\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 4.4, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"confidentialityImpact\": \"NONE\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}, {\"format\": \"CVSS\", \"cvssV4_0\": {\"Safety\": \"NOT_DEFINED\", \"version\": \"4.0\", \"Recovery\": \"NOT_DEFINED\", \"baseScore\": 6.7, \"Automatable\": \"NOT_DEFINED\", \"attackVector\": \"LOCAL\", \"baseSeverity\": \"MEDIUM\", \"valueDensity\": \"NOT_DEFINED\", \"vectorString\": \"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N\", \"providerUrgency\": \"NOT_DEFINED\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"attackRequirements\": \"NONE\", \"privilegesRequired\": \"HIGH\", \"subIntegrityImpact\": \"NONE\", \"vulnIntegrityImpact\": \"HIGH\", \"subAvailabilityImpact\": \"NONE\", \"vulnAvailabilityImpact\": \"NONE\", \"subConfidentialityImpact\": \"NONE\", \"vulnConfidentialityImpact\": \"NONE\", \"vulnerabilityResponseEffort\": \"NOT_DEFINED\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Juniper Networks\", \"product\": \"Junos OS\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"21.2R3-S9\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"21.4\", \"lessThan\": \"21.4R3-S10\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.2\", \"lessThan\": \"22.2R3-S6\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"22.4\", \"lessThan\": \"22.4R3-S6\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.2\", \"lessThan\": \"23.2R2-S3\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"23.4\", \"lessThan\": \"23.4R2-S4\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"24.2\", \"lessThan\": \"24.2R1-S2, 24.2R2\", \"versionType\": \"semver\"}], \"defaultStatus\": \"unaffected\"}], \"exploits\": [{\"lang\": \"en\", \"value\": \"At least one instance of malicious exploitation has been reported to the Juniper SIRT. Customers are encouraged to upgrade to a fixed release as soon as it's available and in the meantime take steps to mitigate this vulnerability.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"At least one instance of malicious exploitation has been reported to the Juniper SIRT. Customers are encouraged to upgrade to a fixed release as soon as it's available and in the meantime take steps to mitigate this vulnerability.\", \"base64\": false}]}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2025-03-12T14:00:00.000Z\", \"value\": \"Initial Publication\"}, {\"lang\": \"en\", \"time\": \"2025-03-12T15:16:00.000Z\", \"value\": \"Corrected hotlinks for CVSS assessments\"}, {\"lang\": \"en\", \"time\": \"2025-03-14T14:00:00.000Z\", \"value\": \"Rephrased sentences on Amazon involvement to reduce the chance for confusion\"}, {\"lang\": \"en\", \"time\": \"2025-04-09T08:17:00.000Z\", \"value\": \"Updated solution section to clarify which platforms are not fixed in all but only in specific releases\"}, {\"lang\": \"en\", \"time\": \"2025-04-14T07:15:00.000Z\", \"value\": \"For the products/platforms specifically mentioned in the solution section: Please note that Junos OS version 21.2R3-S9.20, which was made available last week, does not address the issue completely. We'll publish an updated version with the complete fix and update this advisory as soon as possible.\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"The following software releases have been updated to resolve this specific issue: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.\\n\\n\\n\\u00a0\\n\\n\\nPlease note that this issue is not fixed for all platforms in the releases specified in the solution section.\\n\\n\\nFor the following products the fix is only available in these releases:\\n\\n\\nSRX300 Series\\u2003\\u00a0 21.2R3-S9*, 23.4R2-S5*, 24.4R1\\n\\n\\nSRX550HM\\u2003\\u2003\\u2003 22.2R3-S7*\\n\\n\\nEX4300 Series \\u00a0 \\u00a0 21.4R3-S11*  (except EX4300-48MP which has fixes available as indicated in the solution)\\n\\n\\nEX4600  \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 21.4R3-S11*  (except EX4650 which has fixes available as indicated in the solution)\\n\\n\\nACX1000, ACX1100, ACX2100, ACX2200, ACX4000,\\n\\n\\nACX500  \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a021.2R3-S9*\\n\\n\\nMX104  \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 \\u00a0 21.2R3-S9*\\n\\n\\n* Future Release\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"<p>The following software releases have been updated to resolve this specific issue: 21.2R3-S9, 21.4R3-S10, 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R1-S2, 24.2R2, 24.4R1, and all subsequent releases.</p>\\n<p>&nbsp;</p>\\n<p>Please note that this issue is not fixed for all platforms in the releases specified in the solution section.</p>\\n<p>For the following products the fix is only available in these releases:</p>\\n<p>SRX300 Series\\u2003&nbsp; 21.2R3-S9*, 23.4R2-S5*, 24.4R1</p>\\n<p>SRX550HM\\u2003\\u2003\\u2003 22.2R3-S7*</p>\\n<p>EX4300 Series &nbsp; &nbsp; 21.4R3-S11*  (except EX4300-48MP which has fixes available as indicated in the solution)</p>\\n<p>EX4600  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 21.4R3-S11*  (except EX4650 which has fixes available as indicated in the solution)</p>\\n<p>ACX1000, ACX1100, ACX2100, ACX2200, ACX4000,</p>\\n<p>ACX500  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;21.2R3-S9*</p>\\n<p>MX104  &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 21.2R3-S9*</p>\\n<p>* Future Release&nbsp;</p>\", \"base64\": false}]}], \"datePublic\": \"2025-03-12T14:00:00.000Z\", \"references\": [{\"url\": \"https://supportportal.juniper.net/JSA93446\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://cloud.google.com/blog/topics/threat-intelligence/china-nexus-espionage-targets-juniper-routers\", \"tags\": [\"third-party-advisory\"]}], \"workarounds\": [{\"lang\": \"en\", \"value\": \"It is strongly recommended to mitigate the risk of exploitation by restricting shell access to trusted users only.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"It is strongly recommended to mitigate the risk of exploitation by restricting shell access to trusted users only.\\n\\n<br>\", \"base64\": false}]}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.\\n\\nA local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device.\\nThis issue is not exploitable from the Junos CLI.\\nThis issue affects Junos OS:\\u00a0\\n\\n\\n\\n  *  All versions before 21.2R3-S9,\\n  *  21.4 versions before 21.4R3-S10,\\u00a0\\n  *  22.2 versions before 22.2R3-S6,\\u00a0\\n  *  22.4 versions before 22.4R3-S6,\\u00a0\\n  *  23.2 versions before 23.2R2-S3,\\u00a0\\n  *  23.4 versions before 23.4R2-S4,\\n  *  24.2 versions before 24.2R1-S2, 24.2R2.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"An Improper Isolation or Compartmentalization vulnerability in the kernel of Juniper Networks Junos OS allows a local attacker with high privileges to compromise the integrity of the device.<br><br>A local attacker with access to the shell is able to inject arbitrary code which can compromise an affected device.<br>This issue is not exploitable from the Junos CLI.<br><p>This issue affects Junos OS:&nbsp;</p><p></p><ul><li>All versions before 21.2R3-S9,</li><li>21.4 versions before 21.4R3-S10,&nbsp;</li><li>22.2 versions before 22.2R3-S6,&nbsp;</li><li>22.4 versions before 22.4R3-S6,&nbsp;</li><li>23.2 versions before 23.2R2-S3,&nbsp;</li><li>23.4 versions before 23.4R2-S4,</li><li>24.2 versions before 24.2R1-S2, 24.2R2.</li></ul><p></p>\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-653\", \"description\": \"CWE-653 Improper Isolation or Compartmentalization\"}]}], \"providerMetadata\": {\"orgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"shortName\": \"juniper\", \"dateUpdated\": \"2025-04-14T07:16:10.332Z\"}}}",
         cveMetadata: "{\"cveId\": \"CVE-2025-21590\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-04-14T07:16:10.332Z\", \"dateReserved\": \"2024-12-26T14:47:11.667Z\", \"assignerOrgId\": \"8cbe9d5a-a066-4c94-8978-4b15efeae968\", \"datePublished\": \"2025-03-12T13:59:43.038Z\", \"assignerShortName\": \"juniper\"}",
         dataType: "CVE_RECORD",
         dataVersion: "5.1",
      },
   },
}


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