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Vulnerability CVE-2023-37459
Published: 2023-09-15 Modified: 2023-09-19
| Description: |
Contiki-NG is an operating system for internet-of-things devices. In versions 4.9 and prior, when a packet is received, the Contiki-NG network stack attempts to start the periodic TCP timer if it is a TCP packet with the SYN flag set. But the implementation does not first verify that a full TCP header has been received. Specifically, the implementation attempts to access the flags field from the TCP buffer in the following conditional expression in the `check_for_tcp_syn` function. For this reason, an attacker can inject a truncated TCP packet, which will lead to an out-of-bound read from the packet buffer. As of time of publication, a patched version is not available. As a workaround, one can apply the changes in Contiki-NG pull request #2510 to patch the system. |
Type:
CWE-125 (Out-of-bounds Read)
References: |
https://github.com/contiki-ng/contiki-ng/pull/2510
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-6648-m23r-hq8c
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