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Vulnerability DatabaseCVE-2020-14034

CVE-2020-14034: 
Linux Debian vulnerability analysis and mitigation

Overview

An issue was discovered in janus-gateway (aka Janus WebRTC Server) through version 0.10.0. The vulnerability exists in the janus_get_codec_from_pt function in utils.c, which contains a Buffer Overflow vulnerability that can be triggered via a long value in an SDP Offer packet (NVD).

Technical details

The vulnerability is related to improper usage of sscanf in the janus_get_codec_from_pt function within utils.c. The issue was discovered by Marat Gayanov at Digital Security (dsec.ru) and was assigned a CVSS v3.1 score of 9.8 (CRITICAL) (NVD, GitHub PR).

Impact

The buffer overflow vulnerability could potentially allow an attacker to execute arbitrary code or cause a denial of service condition through a specially crafted SDP Offer packet (NVD).

Exploitability

The vulnerability can be exploited by sending a maliciously crafted SDP Offer packet containing a long value to the affected Janus WebRTC Server (NVD).

Mitigation and workarounds

The issue was fixed in a security update. Users should upgrade to a version of Janus WebRTC Server that contains the fix. The fix involved addressing the improper usage of sscanf in the affected code (GitHub PR).

Additional resources

Source: This report was generated using AI

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Published date

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