Golioth Firmware SDK version 0.10.0 prior to 0.22.0, fixed in commit d7f55b38, contain an out-of-bounds read in LightDB State string parsing. When processing a string payload, a payload_size value less than 2 can cause a size_t underflow when computing the number of bytes to copy (nbytes). The subsequent memcpy() reads past the end of the network buffer, which can crash the device.
The condition is reachable from on_payload, and golioth_payload_is_null() does not block payload_size==1. A malicious server or MITM can trigger a denial of service.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
Present
Additional conditions required
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
None
No data leak
Integrity
None
No data modification
Availability
Low
Partial disruption
CVSS Vector v4.0
Weakness Type (CWE)
References 5
https://blog.secmate.dev/posts/golioth-vulnerabilities-disclosure/
disclosure@vulncheck.com
https://github.com/golioth/golioth-firmware-sdk/commit/d7f55b380d8be8b29bd101ce…
disclosure@vulncheck.com
https://github.com/golioth/golioth-firmware-sdk/releases/tag/v0.22.0
disclosure@vulncheck.com
https://secmate.dev/disclosures/SECMATE-2025-0016
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/golioth-firmware-sdk-lightdb-state-out-of-…
disclosure@vulncheck.com