CVE-2022-36053
A patch that fixes the vulnerability is included in Contiki-NG 4.8.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.60%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.60% probability · 47th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-125
- Affected
- contiki-ng/contiki-ng
- Source
- security-advisories@github.com
References
- https://github.com/contiki-ng/contiki-ng/pull/1648Broken Link
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-2j9c-7754-w4cwThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/pull/1648Broken Link
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-2j9c-7754-w4cwThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.