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CVE-2020-3423 (GCVE-0-2020-3423)

Vulnerability from cvelistv5 – Published: 2020-09-24 18:01 – Updated: 2024-11-13 17:56
VLAI
Title
Cisco IOS XE Software Arbitrary Code Execution Vulnerability
Summary
A vulnerability in the implementation of the Lua interpreter that is integrated in Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code with root privileges on the underlying Linux operating system (OS) of an affected device. The vulnerability is due to insufficient restrictions on Lua function calls within the context of user-supplied Lua scripts. An attacker with valid administrative credentials could exploit this vulnerability by submitting a malicious Lua script. When this file is processed, an exploitable buffer overflow condition could occur. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux OS of the affected device.
Severity
5.1 (Medium)
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-13 17:23 UTC
CWE
Assigner
References
URL Tags
https://tools.cisco.com/security/center/content/C… vendor-advisoryx_refsource_CISCO
Impacted products
Vendor Product Version CPE status
Cisco Cisco IOS XE Software 3.7.0S Affected: n/a
guessed Create a notification for this product.
Date Public
2020-09-24 00:00
Show details on NVD website
To clipboard 

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              "value": "A vulnerability in the implementation of the Lua interpreter that is integrated in Cisco IOS XE Software could allow an authenticated, local attacker to execute arbitrary code with root privileges on the underlying Linux operating system (OS) of an affected device. The vulnerability is due to insufficient restrictions on Lua function calls within the context of user-supplied Lua scripts. An attacker with valid administrative credentials could exploit this vulnerability by submitting a malicious Lua script. When this file is processed, an exploitable buffer overflow condition could occur. A successful exploit could allow the attacker to execute arbitrary code with root privileges on the underlying Linux OS of the affected device."
            }
          ],
          "exploits": [
            {
              "lang": "en",
              "value": "The Cisco Product Security Incident Response Team (PSIRT) is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
            }
          ],
          "metrics": [
            {
              "cvssV3_1": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "NONE",
                "baseScore": 5.1,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "LOW",
                "integrityImpact": "HIGH",
                "privilegesRequired": "HIGH",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:L/I:H/A:N",
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          "providerMetadata": {
            "dateUpdated": "2020-09-24T18:01:23.000Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
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          },
          "references": [
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              "name": "20200924 Cisco IOS XE Software Arbitrary Code Execution Vulnerability",
              "tags": [
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                "x_refsource_CISCO"
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              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f"
            }
          ],
          "source": {
            "advisory": "cisco-sa-ios-lua-rce-7VeJX4f",
            "defect": [
              [
                "CSCvs58804"
              ]
            ],
            "discovery": "INTERNAL"
          },
          "title": "Cisco IOS XE Software Arbitrary Code Execution Vulnerability",
          "x_legacyV4Record": {
            "CVE_data_meta": {
              "ASSIGNER": "psirt@cisco.com",
              "DATE_PUBLIC": "2020-09-24T16:00:00",
              "ID": "CVE-2020-3423",
              "STATE": "PUBLIC",
              "TITLE": "Cisco IOS XE Software Arbitrary Code Execution Vulnerability"
            },
            "affects": {
              "vendor": {
                "vendor_data": [
                  {
                    "product": {
                      "product_data": [
                        {
                          "product_name": "Cisco IOS XE Software 3.7.0S",
                          "version": {
                            "version_data": [
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                                "version_value": "n/a"
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            "data_format": "MITRE",
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              "problemtype_data": [
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                  "description": [
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            "references": {
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                {
                  "name": "20200924 Cisco IOS XE Software Arbitrary Code Execution Vulnerability",
                  "refsource": "CISCO",
                  "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ios-lua-rce-7VeJX4f"
                }
              ]
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        "datePublished": "2020-09-24T18:01:23.330Z",
        "dateReserved": "2019-12-12T00:00:00.000Z",
        "dateUpdated": "2024-11-13T17:56:35.377Z",
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      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.