CVE-2020-24990
By utilizing the TFTP service running on UDP port 69, a remote attacker can perform a directory traversal and obtain operating system files via a TFTP GET request, as demonstrated by reading /etc/passwd or /proc/version.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.68%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An issue was discovered in QSC Q-SYS Core Manager 8.2.1. By utilizing the TFTP service running on UDP port 69, a remote attacker can perform a directory traversal and obtain operating system files via a TFTP GET request, as demonstrated by reading /etc/passwd or /proc/version.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 3.68% probability · 89th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-22
- Affected
- qsc/q-sys core manager
- Source
- cve@mitre.org
References
- http://packetstormsecurity.com/files/159699/QSC-Q-SYS-Core-Manager-8.2.1-Directory-Traversal.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Oct/30Mailing List, Third Party Advisory
- https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htmVendor Advisory
- http://packetstormsecurity.com/files/159699/QSC-Q-SYS-Core-Manager-8.2.1-Directory-Traversal.htmlThird Party Advisory, VDB Entry
- http://seclists.org/fulldisclosure/2020/Oct/30Mailing List, Third Party Advisory
- https://q-syshelp.qsc.com/Content/Core_Manager/CoreManager_Overview.htmVendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.