CVE-2021-43862 Information

Description

jQuery Terminal Emulator is a plugin for creating command line interpreters in your applications. Versions prior to 2.31.1 contain a low impact and limited cross-site scripting (XSS) vulnerability. The code for XSS payload is always visible but an attacker can use other techniques to hide the code the victim sees. If the application uses the execHash option and executes code from URL the attacker can use this URL to execute their code. The scope is limited because the javascript attribute used is added to span tag so no automatic execution like with onerror on images is possible. This issue is fixed in version 2.31.1. As a workaround the user can use formatting that wrap whole user input and its no op. The code for this workaround is available in the GitHub Security Advisory. The fix will only work when user of the library is not using different formatters (e.g. to highlight code in different way).

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Reference

https://github.com/jcubic/jquery.terminal/security/advisories/GHSA-x9r5-jxvq-4387 https://github.com/jcubic/jquery.terminal/releases/tag/2.31.1 https://github.com/jcubic/jquery.terminal/issues/727 https://github.com/jcubic/jquery.terminal/commit/77eb044d0896e990d48a9157f0bc6648f81a84b5

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

5.4