Buffer overflow in Swisscom Internet-Box 2
CVE-2018-16596
A stack-based buffer overflow in the LAN UPnP service running on UDP port 1900 of Swisscom Internet-Box (2, Standard, and Plus) prior to v09.04.00 and Internet-Box light prior to v08.05.02 allows remote code execution. No authentication is required to exploit this vulnerability. Sending a simple UDP packet to port 1900 allows an attacker to execute code on a remote device. However, this is only possible if the attacker is inside the LAN. Because of ASLR, the success rate is not 100% and leads instead to a DoS of the UPnP service. The remaining functionality of the Internet Box is not affected. A reboot of the Internet Box is necessary to attempt the exploit again.
Vulnerability class: Buffer Overflow
EPSS: 0.007 (49.4th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:A/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
Weakness classification (CWE)
References
- cve@mitre.org (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2018-16596?
- CVE-2018-16596 is a high-severity vulnerability in Swisscom Internet-Box 2, classified under Out-of-bounds Write. CVSS score: 7.5/10. Published 2018-12-17.
- How severe is CVE-2018-16596?
- High severity. CVSS v3 base score is 7.5 out of 10.