Buffer Overflow in dhcp6relay DHCPv6 Packet Parsing (CVE-2022-0324)
CVE-2022-0324 Published on November 14, 2022
Buffer Overflow in Dhcp6relay in Software for Open Networking in the Cloud (SONiC)
There is a vulnerability in DHCPv6 packet parsing code that could be explored by remote attacker to craft a packet that could cause buffer overflow in a memcpy call, leading to out-of-bounds memory write that would cause dhcp6relay to crash. Dhcp6relay is a critical process and could cause dhcp relay docker to shutdown. Discovered by Eugene Lim of GovTech Singapore.
Vulnerability Analysis
Weakness Type
What is a Classic Buffer Overflow Vulnerability?
The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. A buffer overflow condition exists when a program attempts to put more data in a buffer than it can hold, or when a program attempts to put data in a memory area outside of the boundaries of a buffer. The simplest type of error, and the most common cause of buffer overflows, is the "classic" case in which the program copies the buffer without restricting how much is copied. Other variants exist, but the existence of a classic overflow strongly suggests that the programmer is not considering even the most basic of security protections.
CVE-2022-0324 has been classified to as a Classic Buffer Overflow vulnerability or weakness.
Products Associated with CVE-2022-0324
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Affected Versions
Linux Foundation Software for Open Networking in the Cloud (SONiC) Version 202111 is affected by CVE-2022-0324Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.