Unrated severityNVD Advisory· Published May 30, 2023· Updated Jan 10, 2025
RIOT-OS vulnerable to NULL pointer dereference during NHC encoding
CVE-2023-33973
Description
RIOT-OS, an operating system for Internet of Things (IoT) devices, contains a network stack with the ability to process 6LoWPAN frames. In versions 2023.01 and prior, an attacker can send a crafted frame which is forwarded by the device. During encoding of the packet a NULL pointer dereference occurs. This crashes the device leading to denial of service. A patch is available at pull request 19678. There are no known workarounds.
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Affected products
2Patches
Vulnerability mechanics
References
8- github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.cmitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.cmitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.cmitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.cmitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.cmitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/commit/c9d7863e5664a169035038628029bb07e090c5ffmitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/pull/19678mitrex_refsource_MISC
- github.com/RIOT-OS/RIOT/security/advisories/GHSA-r2pv-3jqc-vh7wmitrex_refsource_CONFIRM
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