Contiki-NG up to 4.7 IPv6 Packet os/net/ipv6/uipbuf.c uipbuf_get_next_header buffer overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in Contiki-NG up to 4.7. This issue affects the function uipbuf_get_next_header of the file os/net/ipv6/uipbuf.c of the component IPv6 Packet Handler. Executing a manipulation can lead to buffer overflow. This vulnerability is handled as CVE-2022-36053. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability has been found in Contiki-NG up to 4.7 and classified as critical. This vulnerability affects the function uipbuf_get_next_header of the file os/net/ipv6/uipbuf.c of the component IPv6 Packet Handler. The manipulation with an unknown input leads to a buffer overflow vulnerability. The CWE definition for the vulnerability is CWE-120. The product 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. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. The low-power IPv6 network stack of Contiki-NG has a buffer module (os/net/ipv6/uipbuf.c) that processes IPv6 extension headers in incoming data packets. As part of this processing, the function uipbuf_get_next_header casts a pointer to a uip_ext_hdr structure into the packet buffer at different offsets where extension headers are expected to be found, and then reads from this structure. Because of a lack of bounds checking, the casting can be done so that the structure extends beyond the packet's end. Hence, with a carefully crafted packet, it is possible to cause the Contiki-NG system to read data outside the packet buffer. A patch that fixes the vulnerability is included in Contiki-NG 4.8.

The weakness was released 09/01/2022 as GHSA-2j9c-7754-w4cw. The advisory is available at github.com. This vulnerability was named CVE-2022-36053 since 07/15/2022. Technical details are known, but there is no available exploit.

Upgrading to version 4.8 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• Contiki-NG

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7

License

• open-source

Website

• Product: https://github.com/contiki-ng/contiki-ng/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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