CVE-2023-33973
RIOT-OS vulnerable to NULL pointer dereference during NHC encoding
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: poc
- Automatable: yes
- Technical impact: partial
Summary
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: poc · Automatable: yes · Technical impact: partial
- Record last updated
Affected versions
- RIOT-OS RIOT
through 2023.01
References 8
GitHub · RIOT-OS/RIOT
- Advisory GHSA-r2pv-3jqc-vh7w
- Pull request #19678
- Commit c9d7863e
- sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c · L1067
- sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c · L1495
- sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c · L1511
- sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c · L1644
- sys/net/gnrc/network_layer/sixlowpan/iphc/gnrc_sixlowpan_iphc.c · L1655