CVE-2022-21649

CVSS V2 Low 3.5 CVSS V3 Medium 5.4
Description
Convos is an open source multi-user chat that runs in a web browser. Characters starting with "https://" in the chat window create an <a> tag. Stored XSS vulnerability using onfocus and autofocus occurs because escaping exists for "<" or ">" but escaping for double quotes does not exist. Through this vulnerability, an attacker is capable to execute malicious scripts. Users are advised to update as soon as possible.
Overview
  • CVE ID
  • CVE-2022-21649
  • Assigner
  • security-advisories@github.com
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2022-01-04T21:15:07
  • Last Modified Date
  • 2022-01-08T02:46:40
Weakness Enumerations
CWE URL
CWE-79 http://cwe.mitre.org/data/definitions/79.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:convos:convos:*:*:*:*:*:*:*:* 1 OR 6.52
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:M/Au:S/C:N/I:P/A:N
  • Access Vector
  • NETWORK
  • Access Compatibility
  • MEDIUM
  • Authentication
  • SINGLE
  • Confidentiality Impact
  • NONE
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • NONE
  • Base Score
  • 3.5
  • Severity
  • LOW
  • Exploitability Score
  • 6.8
  • Impact Score
  • 2.9
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • LOW
  • User Interaction
  • REQUIRED
  • Scope
  • CHANGED
  • Confidentiality Impact
  • LOW
  • Availability Impact
  • NONE
  • Base Score
  • 5.4
  • Base Severity
  • MEDIUM
  • Exploitability Score
  • 2.3
  • Impact Score
  • 2.7
References
Reference URL Reference Tags
https://github.com/convos-chat/convos/security/advisories/GHSA-xmpj-xwm3-vww7 Patch Third Party Advisory
https://github.com/convos-chat/convos/commit/86b2193de375005ba71d9dd53843562c6ac1847c Patch Third Party Advisory
https://www.huntr.dev/bounties/4532a0ac-4e7c-4fcf-9fe3-630e132325c0/ Exploit Patch Third Party Advisory
https://blog.pocas.kr/2021/12/30/2021-12-30-s-xss-convos-chat/#Second-vulnerability Broken Link Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2022-21649
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-21649
History
Created Old Value New Value Data Type Notes
2022-05-10 06:37:59 Added to TrackCVE
2022-12-06 05:42:15 2022-01-04T21:15Z 2022-01-04T21:15:07 CVE Published Date updated
2022-12-06 05:42:15 2022-01-08T02:46:40 CVE Modified Date updated
2022-12-06 05:42:15 Analyzed Vulnerability Status updated