Vulnerability-Lookup

GSD-2021-20110

Vulnerability from gsd - Updated: 2023-12-13 01:23

Details

Due to Manage Engine Asset Explorer Agent 1.0.34 not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer's Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent's HTTP request verifying its authtoken. In httphandler.cpp, the agent reaching out over HTTP is vulnerable to an Integer Overflow, which can be turned into a Heap Overflow allowing for remote code execution as NT AUTHORITY/SYSTEM on the agent machine. The Integer Overflow occurs when receiving POST response from the Manage Engine server, and the agent calling "HttpQueryInfoW" in order to get the "Content-Length" size from the incoming POST request. This size is taken, but multiplied to a larger amount. If an attacker specifies a Content-Length size of 1073741823 or larger, this integer arithmetic will wrap the value back around to smaller integer, then calls "calloc" with this size to allocate memory. The following API "InternetReadFile" will copy the POST data into this buffer, which will be too small for the contents, and cause heap overflow.

Aliases

CVE-2021-20110

Aliases

CVE-2021-20110

JSON

To clipboard

{
  "GSD": {
    "alias": "CVE-2021-20110",
    "description": "Due to Manage Engine Asset Explorer Agent 1.0.34 not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer\u0027s Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent\u0027s HTTP request verifying its authtoken. In httphandler.cpp, the agent reaching out over HTTP is vulnerable to an Integer Overflow, which can be turned into a Heap Overflow allowing for remote code execution as NT AUTHORITY/SYSTEM on the agent machine. The Integer Overflow occurs when receiving POST response from the Manage Engine server, and the agent calling \"HttpQueryInfoW\" in order to get the \"Content-Length\" size from the incoming POST request. This size is taken, but multiplied to a larger amount. If an attacker specifies a Content-Length size of 1073741823 or larger, this integer arithmetic will wrap the value back around to smaller integer, then calls \"calloc\" with this size to allocate memory. The following API \"InternetReadFile\" will copy the POST data into this buffer, which will be too small for the contents, and cause heap overflow.",
    "id": "GSD-2021-20110"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2021-20110"
      ],
      "details": "Due to Manage Engine Asset Explorer Agent 1.0.34 not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer\u0027s Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent\u0027s HTTP request verifying its authtoken. In httphandler.cpp, the agent reaching out over HTTP is vulnerable to an Integer Overflow, which can be turned into a Heap Overflow allowing for remote code execution as NT AUTHORITY/SYSTEM on the agent machine. The Integer Overflow occurs when receiving POST response from the Manage Engine server, and the agent calling \"HttpQueryInfoW\" in order to get the \"Content-Length\" size from the incoming POST request. This size is taken, but multiplied to a larger amount. If an attacker specifies a Content-Length size of 1073741823 or larger, this integer arithmetic will wrap the value back around to smaller integer, then calls \"calloc\" with this size to allocate memory. The following API \"InternetReadFile\" will copy the POST data into this buffer, which will be too small for the contents, and cause heap overflow.",
      "id": "GSD-2021-20110",
      "modified": "2023-12-13T01:23:12.543125Z",
      "schema_version": "1.4.0"
    }
  },
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                    "product_name": "Manage Engine Asset Explorer Agent",
                    "version": {
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                          "version_value": "1.0.34"
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          }
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      "problemtype": {
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                "value": "Arbitrary Code Execution"
              }
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          {
            "name": "https://www.tenable.com/security/research/tra-2021-31",
            "refsource": "MISC",
            "url": "https://www.tenable.com/security/research/tra-2021-31"
          }
        ]
      }
    },
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              "value": "Due to Manage Engine Asset Explorer Agent 1.0.34 not validating HTTPS certificates, an attacker on the network can statically configure their IP address to match the Asset Explorer\u0027s Server IP address. This will allow an attacker to send a NEWSCAN request to a listening agent on the network as well as receive the agent\u0027s HTTP request verifying its authtoken. In httphandler.cpp, the agent reaching out over HTTP is vulnerable to an Integer Overflow, which can be turned into a Heap Overflow allowing for remote code execution as NT AUTHORITY/SYSTEM on the agent machine. The Integer Overflow occurs when receiving POST response from the Manage Engine server, and the agent calling \"HttpQueryInfoW\" in order to get the \"Content-Length\" size from the incoming POST request. This size is taken, but multiplied to a larger amount. If an attacker specifies a Content-Length size of 1073741823 or larger, this integer arithmetic will wrap the value back around to smaller integer, then calls \"calloc\" with this size to allocate memory. The following API \"InternetReadFile\" will copy the POST data into this buffer, which will be too small for the contents, and cause heap overflow."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
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              "description": [
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                  "value": "CWE-295"
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        },
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              "name": "https://www.tenable.com/security/research/tra-2021-31",
              "refsource": "MISC",
              "tags": [
                "Third Party Advisory"
              ],
              "url": "https://www.tenable.com/security/research/tra-2021-31"
            }
          ]
        }
      },
      "impact": {
        "baseMetricV2": {
          "acInsufInfo": false,
          "cvssV2": {
            "accessComplexity": "LOW",
            "accessVector": "NETWORK",
            "authentication": "NONE",
            "availabilityImpact": "COMPLETE",
            "baseScore": 10.0,
            "confidentialityImpact": "COMPLETE",
            "integrityImpact": "COMPLETE",
            "vectorString": "AV:N/AC:L/Au:N/C:C/I:C/A:C",
            "version": "2.0"
          },
          "exploitabilityScore": 10.0,
          "impactScore": 10.0,
          "obtainAllPrivilege": false,
          "obtainOtherPrivilege": false,
          "obtainUserPrivilege": false,
          "severity": "HIGH",
          "userInteractionRequired": false
        },
        "baseMetricV3": {
          "cvssV3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 3.9,
          "impactScore": 5.9
        }
      },
      "lastModifiedDate": "2021-07-28T13:46Z",
      "publishedDate": "2021-07-19T15:15Z"
    }
  }
}

CVE-2021-20110 (GCVE-0-2021-20110)

Vulnerability from cvelistv5 – Published: 2021-07-19 14:48 – Updated: 2024-08-03 17:30

Summary

Severity ?

No CVSS data available.

CWE

Arbitrary Code Execution

Assigner

tenable

References

URL

Tags

https://www.tenable.com/security/research/tra-2021-31

x_refsource_MISC

Impacted products

	Vendor	Product	Version
	n/a	Manage Engine Asset Explorer Agent	Affected: 1.0.34

Show details on NVD website

JSON

To clipboard

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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:30:07.426Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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              "x_transferred"
            ],
            "url": "https://www.tenable.com/security/research/tra-2021-31"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Manage Engine Asset Explorer Agent",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "1.0.34"
            }
          ]
        }
      ],
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          "lang": "en",
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        }
      ],
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      },
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            "x_refsource_MISC"
          ],
          "url": "https://www.tenable.com/security/research/tra-2021-31"
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Sightings

Author	Source	Type	Date

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.

Action not permitted

GSD-2021-20110

CVE-2021-20110 (GCVE-0-2021-20110)

Tags

Sightings

Nomenclature