CVE-2018-20436 (GCVE-0-2018-20436)
Vulnerability from cvelistv5
Published
2018-12-24 20:00
Modified
2024-08-05 11:58
Severity ?
CWE
  • n/a
Summary
The "secret chat" feature in Telegram 4.9.1 for Android has a "side channel" in which Telegram servers send GET requests for URLs typed while composing a chat message, before that chat message is sent. There are also GET requests to other URLs on the same web server. This also affects one or more other Telegram products, such as Telegram Web-version 0.7.0. In addition, it can be interpreted as an SSRF issue. NOTE: a third party has reported that potentially unwanted behavior is caused by misconfiguration of the "Secret chats > Preview links" setting
References
cve@mitre.orghttps://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.htmlExploit, Third Party Advisory
cve@mitre.orghttps://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.htmlExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.htmlExploit, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.htmlExploit, Third Party Advisory
Impacted products
Vendor Product Version
n/a n/a Version: n/a
Show details on NVD website

To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T11:58:19.486Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2018-12-24T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The \"secret chat\" feature in Telegram 4.9.1 for Android has a \"side channel\" in which Telegram servers send GET requests for URLs typed while composing a chat message, before that chat message is sent. There are also GET requests to other URLs on the same web server. This also affects one or more other Telegram products, such as Telegram Web-version 0.7.0. In addition, it can be interpreted as an SSRF issue. NOTE: a third party has reported that potentially unwanted behavior is caused by misconfiguration of the \"Secret chats \u003e Preview links\" setting"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2018-12-31T17:57:01",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html"
        }
      ],
      "tags": [
        "disputed"
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2018-20436",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "** DISPUTED ** The \"secret chat\" feature in Telegram 4.9.1 for Android has a \"side channel\" in which Telegram servers send GET requests for URLs typed while composing a chat message, before that chat message is sent. There are also GET requests to other URLs on the same web server. This also affects one or more other Telegram products, such as Telegram Web-version 0.7.0. In addition, it can be interpreted as an SSRF issue. NOTE: a third party has reported that potentially unwanted behavior is caused by misconfiguration of the \"Secret chats \u003e Preview links\" setting."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html",
              "refsource": "MISC",
              "url": "https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html"
            },
            {
              "name": "https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html",
              "refsource": "MISC",
              "url": "https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2018-20436",
    "datePublished": "2018-12-24T20:00:00",
    "dateReserved": "2018-12-24T00:00:00",
    "dateUpdated": "2024-08-05T11:58:19.486Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "nvd": "{\"cve\":{\"id\":\"CVE-2018-20436\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2018-12-24T20:29:00.287\",\"lastModified\":\"2024-11-21T04:01:28.737\",\"vulnStatus\":\"Modified\",\"cveTags\":[{\"sourceIdentifier\":\"cve@mitre.org\",\"tags\":[\"disputed\"]}],\"descriptions\":[{\"lang\":\"en\",\"value\":\"The \\\"secret chat\\\" feature in Telegram 4.9.1 for Android has a \\\"side channel\\\" in which Telegram servers send GET requests for URLs typed while composing a chat message, before that chat message is sent. There are also GET requests to other URLs on the same web server. This also affects one or more other Telegram products, such as Telegram Web-version 0.7.0. In addition, it can be interpreted as an SSRF issue. NOTE: a third party has reported that potentially unwanted behavior is caused by misconfiguration of the \\\"Secret chats \u003e Preview links\\\" setting\"},{\"lang\":\"es\",\"value\":\"**EN DISPUTA** La funcionalidad de \\\"chat secreto\\\" en la versi\u00f3n 4.9.1 de Telegram para Android tiene un \\\"canal lateral\\\" a trav\u00e9s del cual servidores Telegram env\u00edan peticiones GET para URL tipadas mientras redactan un mensaje de chat antes de enviarlo. Hay, tambi\u00e9n, peticiones GET a otras URL en el mismo servidor web. Esto tambi\u00e9n afecta a uno o m\u00e1s productos Telegram, como puede ser la versi\u00f3n web 0.7.0 de Telegram. Adem\u00e1s, puede interpretarse como un problema de Server-Side Request Forgery (SSRF). NOTA: un tercero ha reportado que comportamientos potencialmente no deseados son causados por la mala configuraci\u00f3n del ajuste de \\\"chats secretos \u003e Previsualizaci\u00f3n de enlaces\\\".\"}],\"metrics\":{\"cvssMetricV30\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.0\",\"vectorString\":\"CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":8.1,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"HIGH\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":2.2,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:M/Au:N/C:P/I:P/A:P\",\"baseScore\":6.8,\"accessVector\":\"NETWORK\",\"accessComplexity\":\"MEDIUM\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"PARTIAL\",\"integrityImpact\":\"PARTIAL\",\"availabilityImpact\":\"PARTIAL\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.6,\"impactScore\":6.4,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-918\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:telegram:telegram:4.9.1:*:*:*:*:android:*:*\",\"matchCriteriaId\":\"ED6F0254-56FE-4131-8CB3-C1BB9EA96710\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:telegram:web:0.7.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C8E93F9E-49CD-429A-ABE5-BF56C5D85340\"}]}]}],\"references\":[{\"url\":\"https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




Tags
Taxonomy of the tags.




Sightings

Author Source Type Date

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.