cve-2021-0239
Vulnerability from cvelistv5
Published
2021-04-22 19:37
Modified
2024-09-16 17:49
Severity ?
EPSS score ?
Summary
Junos OS Evolved: Denial of Service due to receipt of specific genuine layer 2 frames.
References
▼ | URL | Tags | |
---|---|---|---|
sirt@juniper.net | https://kb.juniper.net/JSA11134 | Vendor Advisory |
Impacted products
▼ | Vendor | Product |
---|---|---|
Juniper Networks | Junos OS Evolved |
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By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. This issue does not affect Junos OS versions." } ], "exploits": [ { "lang": "en", "value": "Juniper SIRT is not aware of any malicious exploitation of this vulnerability." } ], "metrics": [ { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "ADJACENT_NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H", "version": "3.1" } } ], "problemTypes": [ { "descriptions": [ { "cweId": "CWE-754", "description": "CWE-754 Improper Check for Unusual or Exceptional Conditions", "lang": "en", "type": "CWE" } ] }, { "descriptions": [ { "description": "Denial of Service (DoS)", "lang": "en", "type": "text" } ] } ], "providerMetadata": { "dateUpdated": "2021-04-22T19:37:05", "orgId": "8cbe9d5a-a066-4c94-8978-4b15efeae968", "shortName": "juniper" }, "references": [ { "tags": [ "x_refsource_MISC" ], "url": "https://kb.juniper.net/JSA11134" } ], "solutions": [ { "lang": "en", "value": "The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 20.4R1-EVO, and all subsequent releases." } ], "source": { "advisory": "JSA11134", "defect": [ "1548758" ], "discovery": "INTERNAL" }, "title": "Junos OS Evolved: Denial of Service due to receipt of specific genuine layer 2 frames.", "workarounds": [ { "lang": "en", "value": "There are no viable workarounds for this issue." } ], "x_generator": { "engine": "Vulnogram 0.0.9" }, "x_legacyV4Record": { "CVE_data_meta": { "ASSIGNER": "sirt@juniper.net", "DATE_PUBLIC": "2021-04-14T16:00:00.000Z", "ID": "CVE-2021-0239", "STATE": "PUBLIC", "TITLE": "Junos OS Evolved: Denial of Service due to receipt of specific genuine layer 2 frames." }, "affects": { "vendor": { "vendor_data": [ { "product": { "product_data": [ { "product_name": "Junos OS Evolved", "version": { "version_data": [ { "version_affected": "\u003c", "version_value": "20.4R1-EVO" } ] } } ] }, "vendor_name": "Juniper Networks" } ] } }, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": { "description_data": [ { "lang": "eng", "value": "In Juniper Networks Junos OS Evolved, receipt of a stream of specific genuine Layer 2 frames may cause the Advanced Forwarding Toolkit (AFT) manager process (Evo-aftmand), responsible for handling Route, Class-of-Service (CoS), Firewall operations within the packet forwarding engine (PFE) to crash and restart, leading to a Denial of Service (DoS) condition. By continuously sending this specific stream of genuine Layer 2 frames, an attacker can repeatedly crash the PFE, causing a sustained Denial of Service (DoS). This issue affects Juniper Networks Junos OS Evolved: All versions prior to 20.4R1-EVO. 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Sightings
Author | Source | Type | Date |
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Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.