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CVE

CVE-2023-33973

RIOT-OS vulnerable to NULL pointer dereference during NHC encoding
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CVE

CVE-2023-33973

RIOT-OS vulnerable to NULL pointer dereference during NHC encoding

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.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
7.5
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/networklayer/sixlowpan/iphc/gnrcsixlowpaniphc.c#L1067, https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/networklayer/sixlowpan/iphc/gnrcsixlowpaniphc.c#L1495, https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/networklayer/sixlowpan/iphc/gnrcsixlowpaniphc.c#L1511, https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/networklayer/sixlowpan/iphc/gnrcsixlowpaniphc.c#L1644, https://github.com/RIOT-OS/RIOT/blob/f41b4b67b6affca0a8b32edced7f51088696869a/sys/net/gnrc/networklayer/sixlowpan/iphc/gnrcsixlowpan_iphc.c#L1655, https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/33xxx/CVE-2023-33973.json, https://github.com/RIOT-OS/RIOT/security/advisories/GHSA-r2pv-3jqc-vh7w, https://nvd.nist.gov/vuln/detail/CVE-2023-33973, https://github.com/RIOT-OS/RIOT/commit/c9d7863e5664a169035038628029bb07e090c5ff, https://github.com/RIOT-OS/RIOT/pull/19678

Severity

7.5

CVSS Score
0
10

Basic Information

Ecosystem
Base CVSS
7.5
EPSS Probability
0.00291%
EPSS Percentile
0.52487%
Introduced Version
0
Fix Available

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