CVE-2023-37459: medium-severity vulnerability in contiki-ng
Out-of-bounds read when processing a received IPv6 packet
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.3epss 0.5%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Affected products
contiki-ng · contiki-ngRelated CVEs — contiki-ng
In the same product, most dangerous first.
CVE-2022-35927HIGHUnverified DIO prefix info lengths in RPL-Classic in Contiki-NGEPSS 2.2%CVE-2021-32771HIGHBuffer overflow in contiki-ngEPSS 1.4%CVE-2022-35926MEDIUMOut-of-bounds read in IPv6 neighbor solicitation in Contiki-NGEPSS 1.3%CVE-2021-21410HIGHOut-of-bounds read in the 6LoWPAN implementationEPSS 1.2%CVE-2021-21257HIGHOut-of-bounds write in RPL-Classic and RPL-LiteEPSS 1.1%CVE-2021-21280HIGHOut-of-bounds write when processing 6LoWPAN extension headersEPSS 1.1%