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CVE-2017-1000083 is a command execution vulnerability in the comic book backend of GNOME Evince, specifically in backend/comics/comics-document.c, affecting versions before 3.24.1. The flaw is triggered when Evince processes a crafted .cbt file implemented as a TAR archive containing an entry name that begins with command-line option syntax. Because the backend passes archive member names to a TAR invocation without adequately preventing option injection, an attacker can supply a filename beginning with option substrings such as TAR command-line flags, causing unintended command execution during archive handling. Successful exploitation can occur when a user opens a malicious comic book archive in Evince.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos (1 hidden).
This repository contains a single Metasploit module (Ruby) that exploits a command injection vulnerability (CVE-2017-1000083) in Evince (a Linux document viewer) when opening specially crafted comic book archive files (.cbt). The exploit works by creating a malicious .cbt (tar) archive with a file path that triggers command execution via the tar '--checkpoint-action' feature. The payload is a shell command (default: reverse bash shell), limited to 215 bytes due to archive constraints. The exploit can be triggered by a user opening the file in Evince, or automatically by file managers like Nautilus or Atril that generate previews. The module is operational, allowing the attacker to execute arbitrary commands on the target system. The only fingerprintable endpoint is the malicious .cbt file itself. The code is structured as a standard Metasploit exploit module, with options for payload and output filename.
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