CVE-2020-17437: High severity uip vulnerability
An issue was discovered in uIP 1.0, as used in Contiki 3.0 and other products. When the Urgent flag is set in a TCP packet, and the stack is configured to ignore the urgent data, the stack attempts to use the value of the Urgent pointer bytes to separate the Urgent data from the normal data, by calculating the offset at which the normal data should be present in the global buffer. However, the length of this offset is not checked; therefore, for large values of the Urgent pointer bytes, the data pointer can point to memory that is way beyond the data buffer in uipprocess in uip.c.
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the vulnerability ID for this issue?
The vulnerability ID for this issue is CVE-2020-17437.
What is the severity of CVE-2020-17437?
The severity of CVE-2020-17437 is high with a severity value of 8.2.
Which products are affected by CVE-2020-17437?
Products such as uIP 1.0 in Contiki 3.0 and other related products are affected by CVE-2020-17437.
How can I fix CVE-2020-17437?
To fix CVE-2020-17437, it is recommended to apply the necessary patches or updates provided by the vendor.
Where can I find more information about CVE-2020-17437?
You can find more information about CVE-2020-17437 on the official websites of US-CERT and Siemens, as well as the KB-CERT advisory.