PT-2020-10299 · Swisscom · Swisscom Centro Grande

Cyril Mueller · Published 2020-03-16 · Updated 2021-02-03 · CVE-2019-19941

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 Swisscom Centro Grande versions prior to 6.16.12

Description The issue is related to missing hostname validation, allowing a remote attacker to inject its local IP address as a domain entry in the DNS service of the router via crafted hostnames in DHCP requests, causing XSS.

Recommendations For versions prior to 6.16.12, update to version 6.16.12 or later to resolve the issue. As a temporary workaround, consider restricting access to the DNS service of the router to minimize the risk of exploitation.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2019-19941

Affected Products

Swisscom Centro Grande

References · 5

• 🔥 https://swisscom.ch/content/dam/swisscom/de/about/nachhaltigkeit/digitale-schweiz/sicherheit/bug-bounty/files/cve-2019-19940ff.txt · Exploit
• https://osv.dev/vulnerability/CVE-2019-19941 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-19941 · Security Note
• https://t.me/cvenotify/1745 · Telegram Post
• https://swisscom.ch/en/residential/help/device/internet-router.html · Note