PT-2020-15879 · Qsc · Q-Sys Core Manager

Kevin Randall · Published 2020-10-23 · Updated 2020-11-17 · CVE-2020-24990

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

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

Name of the Vulnerable Software and Affected Versions QSC Q-SYS Core Manager version 8.2.1 QSC Q-SYS Core Manager versions prior to 8.2.1

Description An issue was discovered in QSC Q-SYS Core Manager. A remote attacker can perform a directory traversal via the TFTP service running on UDP port 69 and obtain operating system files by sending a TFTP GET request. For example, an attacker can read /etc/passwd or /proc/version files.

Recommendations For QSC Q-SYS Core Manager version 8.2.1, update to a version that fixes this issue. For QSC Q-SYS Core Manager versions prior to 8.2.1, update to a version that fixes this issue. As a temporary workaround, consider disabling the TFTP service running on UDP port 69 until a patch is available.

Fix

Path traversal

Weakness Enumeration

CWE-22

Related Identifiers

CVE-2020-24990

Affected Products

Q-Sys Core Manager

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2020-24990 · Security Note
• https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htm · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2020-24990 · Vendor Advisory
• https://t.me/defcon_news/60002 · Telegram Post
• http://packetstormsecurity.com/files/159699/QSC-Q-SYS-Core-Manager-8.2.1-Directory-Traversal.html · Note
• http://seclists.org/fulldisclosure/2020/Oct/30 · Note