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CVE-2019-10655

Status Candidate

Overview

Grandstream GAC2500 1.0.3.35, GXP2200 1.0.3.27, GVC3202 1.0.3.51, GXV3275 before 1.0.3.219 Beta, and GXV3240 before 1.0.3.219 Beta devices allow unauthenticated remote code execution via shell metacharacters in a /manager?action=getlogcat priority field, in conjunction with a buffer overflow (via the phonecookie cookie) to overwrite a data structure and consequently bypass authentication. This can be exploited remotely or via CSRF because the cookie can be placed in an Accept HTTP header in an XMLHttpRequest call to lighttpd.

Related Files

Grandstream GXV31XX settimezone Unauthenticated Command Execution
Posted Feb 9, 2022
Authored by Brendan Coles, alhazred, Brendan Scarvell | Site metasploit.com

This Metasploit module exploits a command injection vulnerability in Grandstream GXV31XX IP multimedia phones. The settimezone action does not validate input in the timezone parameter allowing injection of arbitrary commands. A buffer overflow in the phonecookie cookie parsing allows authentication to be bypassed by providing an alphanumeric cookie 93 characters in length. This module was tested successfully on Grandstream models: GXV3175v2 hardware revision V2.6A with firmware version 1.0.1.19; and GXV3140 hardware revision V0.4B with firmware version 1.0.1.27.

tags | exploit, overflow, arbitrary
advisories | CVE-2019-10655
SHA-256 | cc41409b8e7ba0962a39d75e4cae7e60ab281dbc2db437a377040c160691840b
Grandstream GXV3175 Unauthenticated Command Execution
Posted Jan 20, 2022
Authored by Brendan Coles, alhazred, Brendan Scarvell | Site metasploit.com

This Metasploit module exploits a command injection vulnerability in Grandstream GXV3175 IP multimedia phones. The settimezone action does not validate input in the timezone parameter allowing injection of arbitrary commands. A buffer overflow in the phonecookie cookie parsing allows authentication to be bypassed by providing an alphanumeric cookie 93 characters in length. This module was tested successfully on Grandstream GXV3175v2 hardware revision V2.6A with firmware version 1.0.1.19.

tags | exploit, overflow, arbitrary
advisories | CVE-2019-10655
SHA-256 | d0fc19a40c910116b96508ffd011c4004a203947a4105f88adf98dfcb129e127
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