Out-of-bounds read when decompressing UDP header
Published Sep 1, 2022
8.8
HIGHCVSS 3.1
EPSS 0.64%
Description
Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. The 6LoWPAN implementation in Contiki-NG may cast a UDP header structure at a certain offset in a packet buffer. The code does not check whether the packet buffer is large enough to fit a full UDP header structure from the offset where the casting is made. Hence, it is possible to cause an out-of-bounds read beyond the packet buffer. The problem affects anyone running devices with Contiki-NG versions previous to 4.8, and which may receive 6LoWPAN packets from external parties. The problem has been patched in Contiki-NG version 4.8.
Affected products
-
- Version < 4.8StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Contiki-NG | Contiki-NG | n/a |
|
- < 4.8
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1 other source (GitHub) ▾
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Apr 23, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 3, 2026.
Score over time
2022-2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed. Showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 3, 2026 | 0.64% (0.00640) | 48.85th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.51% (0.00512) | 39.35th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.09% (0.00090) | 23.46th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.09% (0.00089) | 39.86th | v3 (v2023.03.01) |
| Mar 24, 2024 | 0.09% (0.00089) | 36.81th | v3 (v2023.03.01) |
| Sep 8, 2023 | 0.08% (0.00076) | 31.35th | v3 (v2023.03.01) |
| Aug 2, 2023 | 0.06% (0.00058) | 22.69th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.05% (0.00050) | 17.03th | v3 (v2023.03.01) |
| Mar 6, 2023 | 0.89% (0.00885) | 27.89th | v2 (v2022.01.01) |
| Sep 2, 2022 | 0.89% (0.00885) | 26.14th | v2 (v2022.01.01) |
References (2)
- https://github.com/contiki-ng/contiki-ng/pull/1648 x_refsource_MISCPatchThird Party Advisory
- https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-vwr8-6mqv-x7f5 x_refsource_CONFIRMThird Party Advisory
| Link | Providers | Tags |
|---|---|---|
| https://github.com/contiki-ng/contiki-ng/pull/1648 | x_refsource_MISCPatchThird Party Advisory | |
| https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-vwr8-6mqv-x7f5 | x_refsource_CONFIRMThird Party Advisory |
Change history (0)
No recorded changes yet.