Vulnerability-Lookup

FKIE_CVE-2018-20177

Vulnerability from fkie_nvd - Published: 2019-03-15 18:29 - Updated: 2026-06-17 01:52

Severity

9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Summary

rdesktop versions up to and including v1.8.3 contain an Integer Overflow that leads to a Heap-Based Buffer Overflow in the function rdp_in_unistr() and results in memory corruption and possibly even a remote code execution.

References

URL	Tags
cve@mitre.org	http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html	Mailing List, Third Party Advisory
cve@mitre.org	http://www.securityfocus.com/bid/106938	Broken Link, Third Party Advisory, VDB Entry
cve@mitre.org	https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1	Patch
cve@mitre.org	https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html	Mailing List, Third Party Advisory
cve@mitre.org	https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/	Exploit, Third Party Advisory
cve@mitre.org	https://security.gentoo.org/glsa/201903-06	Third Party Advisory
cve@mitre.org	https://www.debian.org/security/2019/dsa-4394	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	http://www.securityfocus.com/bid/106938	Broken Link, Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108	https://github.com/rdesktop/rdesktop/commit/4dca546d04321a610c1835010b5dad85163b65e1	Patch
af854a3a-2127-422b-91ae-364da2661108	https://lists.debian.org/debian-lts-announce/2019/02/msg00030.html	Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://research.checkpoint.com/reverse-rdp-attack-code-execution-on-rdp-clients/	Exploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://security.gentoo.org/glsa/201903-06	Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108	https://www.debian.org/security/2019/dsa-4394	Third Party Advisory

Impacted products

Vendor	Product	Version
rdesktop	rdesktop	*
debian	debian_linux	8.0
debian	debian_linux	9.0
opensuse	backports	sle-15
opensuse	leap	15.1

JSON

To clipboard

{
  "affected": [
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      "affectedData": [
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          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "source": "cve@mitre.org"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:rdesktop:rdesktop:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "223ED7FC-79EF-4324-82AE-D3794128C7A3",
              "versionEndIncluding": "1.8.3",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
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    },
    {
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          "cpeMatch": [
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              "matchCriteriaId": "C11E6FB0-C8C0-4527-9AA0-CB9B316F8F43",
              "vulnerable": true
            },
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              "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
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              "matchCriteriaId": "C84D9410-31B7-421A-AD99-8ED2E45A9BC6",
              "vulnerable": true
            },
            {
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  "cveTags": [],
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    {
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    },
    {
      "lang": "es",
      "value": "rdesktop, en versiones hasta e incluyendo la v1.8.3, contiene un desbordamiento de enteros que conduce a un desbordamiento de b\u00fafer basado en memoria din\u00e1mica (heap) en la funci\u00f3n rdp_in_unistr() y resulta en la corrupci\u00f3n de memoria y, posiblemente, incluso la ejecuci\u00f3n remota de c\u00f3digo."
    }
  ],
  "id": "CVE-2018-20177",
  "lastModified": "2026-06-17T01:52:24.380",
  "metrics": {
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      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 7.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 6.4,
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        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "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,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2019-03-15T18:29:00.423",
  "references": [
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      "source": "cve@mitre.org",
      "tags": [
        "Mailing List",
        "Third Party Advisory"
      ],
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00040.html"
    },
    {
      "source": "cve@mitre.org",
      "tags": [
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        "Third Party Advisory",
        "VDB Entry"
      ],
      "url": "http://www.securityfocus.com/bid/106938"
    },
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      "tags": [
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    },
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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    {
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        "Third Party Advisory"
      ],
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  ],
  "sourceIdentifier": "cve@mitre.org",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-190"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}

CVE-2018-20177 (GCVE-0-2018-20177)

Vulnerability from cvelistv5 – Published: 2019-03-15 18:00 – Updated: 2024-08-05 11:58

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

7 references

URL	Tags
http://www.securityfocus.com/bid/106938	vdb-entryx_refsource_BID
https://github.com/rdesktop/rdesktop/commit/4dca5…	x_refsource_MISC
https://security.gentoo.org/glsa/201903-06	vendor-advisoryx_refsource_GENTOO
https://research.checkpoint.com/reverse-rdp-attac…	x_refsource_CONFIRM
https://www.debian.org/security/2019/dsa-4394	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE

Date Public

2019-01-16 00:00

Show details on NVD website

JSON

To clipboard

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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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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.

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FKIE_CVE-2018-20177

CVE-2018-20177 (GCVE-0-2018-20177)

Tags

Sightings

Nomenclature

Related by attack behaviour