CVE-2017-15049

published 2017-12-19

CVE-2017-15049: The ZoomLauncher binary in the Zoom client for Linux before 2.0.115900.1201 does not properly sanitize user input when constructing a shell command, which…

Priority P2 72 high 8.8 CVSS 3.1

AV N AC L PR N UI R S U C H I H A H

EXPLOIT

The ZoomLauncher binary in the Zoom client for Linux before 2.0.115900.1201 does not properly sanitize user input when constructing a shell command, which allows remote attackers to execute arbitrary code by leveraging the zoommtg:// scheme handler.

Affected

1 ranges

Vendor	Product	Version range	Fixed in
zoom	zoom	< 2.0.115900.1201	2.0.115900.1201

Detection & IOCs extracted from sources · hover to see the quote

other zoommtg://↗

command zoommtg://$(gnome-calculator${IFS}-e${IFS}1337)↗

path /opt/zoom/ZoomLauncher↗

snort

alert tcp any any -> $HOME_NET any (msg:"ET EXPLOIT Zoom Linux Client Command Injection (CVE-2017-15049)"; flow:established,to_client; file.data; content:"zoommtg|3a 2f 2f|"; pcre:"/^[^\x22\x27]*?[\x3b\x26\x60\x7c\x24]/R"; reference:url,packetstorm.news/files/id/145453; reference:cve,2017-15049; classtype:bad-unknown; sid:2066200; rev:1; metadata:affected_product Zoom, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2025_12_09, cve CVE_2017_15049, deployment Perimeter, deployment Internal, deployment SSLDecrypt, confidence Medium, signature_severity Major, updated_at 2025_12_09; target:dest_ip;)

bytes

zoommtg|3a 2f 2f|

• → Monitor for shell metacharacters (;, &, `, |, $) immediately following a zoommtg:// URI, as the ZoomLauncher binary passes unsanitized user input directly into a shell command string.
• → The constructed shell command includes environment variable exports before invoking /opt/zoom/zoom; look for process executions of /opt/zoom/zoom with arguments containing $(...) or backtick subshell syntax. ↗
• → The exploit is triggerable via a web page using window.location redirect to a zoommtg:// URI; monitor browser-spawned processes that invoke ZoomLauncher with shell-special characters in arguments. ↗
• → The Snort/Suricata rule targets TLS-decrypted traffic (tls_state TLSDecrypt) flowing to_client; deploy on perimeter and internal sensors with SSL inspection enabled.

• · The Snort/Suricata rule requires TLS decryption to be active; without SSL inspection the content match on zoommtg:// in encrypted traffic will not fire.
• · The vulnerability affects Zoom client for Linux versions before 2.0.115900.1201; the confirmed vulnerable version is 2.0.106600.0904 (zoom_amd64.deb). Other versions may also be vulnerable. ↗

CVSS provenance

nvd v3.1 8.8 HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

nvd v2.0 9.3 CRITICAL AV:N/AC:M/Au:N/C:C/I:C/A:C

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