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Cisco Engaged on Patch for Publicly Disclosed IP Cellphone Vulnerability

By Eduard Kovacs on December 09, 2022

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Cisco knowledgeable prospects on Thursday that it’s engaged on patches for a high-severity vulnerability affecting a few of its IP telephones.

The flaw, tracked as CVE-2022-20968, impacts 7800 sequence and 8800 sequence (besides 8821) Cisco IP telephones. There are not any workarounds, however Cisco did present a mitigation that can be utilized till patches are launched by the corporate.

CVE-2022-20968 has been described by the networking big as a stack buffer overflow associated to the Discovery Protocol processing function.

An unauthenticated, adjoining attacker might exploit the vulnerability by sending specifically crafted Discovery Protocol packets to the focused gadget. Exploitation can result in arbitrary code execution or a denial-of-service (DoS) situation.

Cisco IP telephones operating firmware model 14.2 and earlier are impacted. A patch is scheduled for January 2023.

The corporate says it’s not conscious of any malicious assaults exploiting the vulnerability, however famous that the flaw has been “publicly mentioned” and a proof-of-concept (PoC) exploit is out there.

SecurityWeek couldn’t instantly discover the PoC and public disclosure. Nonetheless, the vulnerability was reported to Cisco by Qian Chen of Codesafe Staff of Legendsec at Chinese language cybersecurity agency Qi’anxin Group and the knowledge may solely be obtainable in Chinese language.

Qi’anxin researchers have reported vulnerabilities to a number of main software program and {hardware} distributors over the previous years, together with Oracle, Moxa, HPE, Apple and Google.

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