CVE-2023-0847
Published: 01 March 2023
Summary
CVE-2023-0847 is a medium-severity Out-of-bounds Write (CWE-787) vulnerability in Dash7-Alliance Dash7 Alliance Protcol. Its CVSS base score is 5.3 (Medium).
Operationally, ranked in the top 15.0% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The Sub-IoT implementation of the DASH7 Alliance protocol, prior to version 0.5.0, contains an out-of-bounds write vulnerability tracked as CVE-2023-0847 and assigned CWE-787. The flaw resides in the protocol stack and can be triggered over the network. Under default compilation settings the write is limited to allocated but unused memory, while non-default configurations raise the possibility of system crashes or remote code execution.
An unauthenticated remote attacker can send crafted protocol messages to trigger the flaw. With default builds the impact is confined to limited integrity effects, consistent with the CVSS 5.3 rating, whereas non-default builds may allow denial-of-service conditions or arbitrary code execution.
The GitHub Security Advisory GHSA-ggxh-88wc-c4fg and the accompanying CISA advisory ICSA-23-047-13 recommend upgrading to Sub-IoT-Stack 0.5.0 or later to eliminate the out-of-bounds write.
EPSS for this CVE rose sharply from a low baseline to a peak of 0.8076 on 2025-01-22 before receding, indicating a later surge in exploitation interest well after the March 2023 disclosure.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2023-12845
Vulnerability details
The Sub-IoT implementation of the DASH 7 Alliance protocol has a vulnerability that can lead to an out-of-bounds write prior to implementation version 0.5.0. If the protocol has been compiled using default settings, this will only grant the attacker access…
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to allocated but unused memory. However, if it was configured using non-default settings, there is the possibility that exploiting this vulnerability could lead to system crashes and remote code execution.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Out-of-bounds writes that corrupt control flow or inject shellcode are rendered non-executable by the same memory protections.