CVE-2021-1236 (GCVE-0-2021-1236)

Vulnerability from cvelistv5 – Published: 2021-01-13 21:17 – Updated: 2024-11-12 20:48
VLAI
Title
Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability
Summary
Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network.
Severity
4 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-11-08 20:55 UTC
CWE
Assigner
cisco CNA under the mitre root
CNA scorecard C 66/100 over 411 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Cisco Cisco Firepower Threat Defense Software Affected: n/a
guessed Create a notification for this product.
Date Public
2021-01-13 00:00
Show details on NVD website
To clipboard 

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              "value": "Multiple Cisco products are affected by a vulnerability in the Snort application detection engine that could allow an unauthenticated, remote attacker to bypass the configured policies on an affected system. The vulnerability is due to a flaw in the detection algorithm. An attacker could exploit this vulnerability by sending crafted packets that would flow through an affected system. A successful exploit could allow the attacker to bypass the configured policies and deliver a malicious payload to the protected network."
            }
          ],
          "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_0": {
                "attackComplexity": "HIGH",
                "attackVector": "NETWORK",
                "availabilityImpact": "NONE",
                "baseScore": 4,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "LOW",
                "privilegesRequired": "NONE",
                "scope": "CHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N",
                "version": "3.0"
              }
            }
          ],
          "problemTypes": [
            {
              "descriptions": [
                {
                  "cweId": "CWE-670",
                  "description": "CWE-670",
                  "lang": "en",
                  "type": "CWE"
                }
              ]
            }
          ],
          "providerMetadata": {
            "dateUpdated": "2023-02-19T00:00:00.000Z",
            "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
            "shortName": "cisco"
          },
          "references": [
            {
              "name": "20210113 Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-snort-app-bypass-cSBYCATq"
            },
            {
              "name": "[debian-lts-announce] 20230210 [SECURITY] [DLA 3317-1] snort security update",
              "tags": [
                "mailing-list"
              ],
              "url": "https://lists.debian.org/debian-lts-announce/2023/02/msg00011.html"
            },
            {
              "name": "DSA-5354",
              "tags": [
                "vendor-advisory"
              ],
              "url": "https://www.debian.org/security/2023/dsa-5354"
            }
          ],
          "source": {
            "advisory": "cisco-sa-snort-app-bypass-cSBYCATq",
            "defect": [
              [
                "CSCvs85467",
                "CSCvu21318"
              ]
            ],
            "discovery": "INTERNAL"
          },
          "title": "Multiple Cisco Products Snort Application Detection Engine Policy Bypass Vulnerability"
        }
      },
      "cveMetadata": {
        "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "assignerShortName": "cisco",
        "cveId": "CVE-2021-1236",
        "datePublished": "2021-01-13T21:17:03.406Z",
        "dateReserved": "2020-11-13T00:00:00.000Z",
        "dateUpdated": "2024-11-12T20:48:23.581Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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