CVE-2018-20436
CVSS V2 Medium 6.8
CVSS V3 High 8.1
Description
** 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 > Preview links" setting.
Overview
- CVE ID
- CVE-2018-20436
- Assigner
- cve@mitre.org
- Vulnerability Status
- Analyzed
- Published Version
- 2018-12-24T20:29:00
- Last Modified Date
- 2019-02-14T16:30:51
Weakness Enumerations
CPE Configuration (Product)
| CPE | Vulnerable | Operator | Version Start | Version End |
|---|---|---|---|---|
| cpe:2.3:a:telegram:telegram:4.9.1:*:*:*:*:android:*:* | 1 | OR | ||
| cpe:2.3:a:telegram:web:0.7.0:*:*:*:*:*:*:* | 1 | OR |
CVSS Version 2
- Version
- 2.0
- Vector String
- AV:N/AC:M/Au:N/C:P/I:P/A:P
- Access Vector
- NETWORK
- Access Compatibility
- MEDIUM
- Authentication
- NONE
- Confidentiality Impact
- PARTIAL
- Integrity Impact
- PARTIAL
- Availability Impact
- PARTIAL
- Base Score
- 6.8
- Severity
- MEDIUM
- Exploitability Score
- 8.6
- Impact Score
- 6.4
CVSS Version 3
- Version
- 3.0
- Vector String
- CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
- Attack Vector
- NETWORK
- Attack Compatibility
- HIGH
- Privileges Required
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality Impact
- HIGH
- Availability Impact
- HIGH
- Base Score
- 8.1
- Base Severity
- HIGH
- Exploitability Score
- 2.2
- Impact Score
- 5.9
References
| Reference URL | Reference Tags |
|---|---|
| https://misteralfa-hack.blogspot.com/2018/12/telegram-siempre-in-middle.html | Exploit Third Party Advisory |
| https://misteralfa-hack.blogspot.com/2018/12/abusando-de-telegram-para-conseguir-una.html | Exploit Third Party Advisory |
Sources
| Source Name | Source URL |
|---|---|
| NIST | https://nvd.nist.gov/vuln/detail/CVE-2018-20436 |
| MITRE | https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20436 |
History
| Created | Old Value | New Value | Data Type | Notes |
|---|---|---|---|---|
| 2022-05-10 07:58:42 | Added to TrackCVE | |||
| 2022-12-03 15:44:18 | 2018-12-24T20:29Z | 2018-12-24T20:29:00 | CVE Published Date | updated |
| 2022-12-03 15:44:18 | 2019-02-14T16:30:51 | CVE Modified Date | updated | |
| 2022-12-03 15:44:18 | Analyzed | Vulnerability Status | updated |