PT-2019-8656 · Vera · Veraedge+1

Published 2019-06-17 · Updated 2019-06-20 · CVE-2017-9387

Positive Technologies (AI Summary)

CVSS v3.1

5.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Vera VeraEdge version 1.7.19 Vera Veralite version 1.7.481

Description An issue was discovered in Vera devices, where a shell script called relay.sh logs parameters to a file called log.relay in the /tmp folder. These logs can be read by a user using a script called log.sh, which displays the logs with content-type text/html and passes them through the ansi2html binary to convert character text, including HTML meta-characters, for display in the browser. This allows an attacker to store an XSS payload in the log files, enabling the payload when a user navigates to the log.sh script and allowing the attacker to execute malicious code on the user's browser.

Recommendations For Vera VeraEdge version 1.7.19, consider disabling the log.sh script until a patch is available to prevent the execution of malicious payloads. For Vera Veralite version 1.7.481, restrict access to the log.relay file in the /tmp folder to minimize the risk of exploitation. As a temporary workaround, avoid using the log.sh script until the issue is resolved.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2017-9387

Affected Products

Veraedge

Veralite

References · 5

• 🔥 https://github.com/ethanhunnt/IoT_vulnerabilities/blob/master/Vera_sec_issues.pdf · Exploit
• https://osv.dev/vulnerability/CVE-2017-9387 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2017-9387 · Security Note
• https://seclists.org/bugtraq/2019/Jun/8 · Note
• https://t.me/cibsecurity/4960 · Telegram Post