obgm libcoap 4.3.4 Configuration File src/coap_oscore.c get_split_entry stack-based overflow

CVSS Meta Temp Score
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CTI Interest Score
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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 with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability.

The weakness was released 01/26/2024. The advisory is available at github.com. This vulnerability is handled as CVE-2024-0962. Successful exploitation requires user interaction by the victim. Technical details as well as a public exploit are known.

The exploit is available at github.com. It is declared as proof-of-concept.

Applying a patch is able to eliminate this problem. The bugfix is ready for download at github.com.

Entries connected to this vulnerability are available at VDB-252103, VDB-252333, VDB-253127 and VDB-255109.





CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔒
VulDB CVSS-BT Score: 🔒
VulDB Vector: 🔒
VulDB Reliability: 🔍


VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.6

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔒

CNA Base Score: 6.3
CNA Vector (VulDB): 🔒



VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

NVD Base Score: 🔒


Class: Stack-based overflow
CWE: CWE-121 / CWE-119

Local: No
Remote: Yes

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒


Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍


Recommended: Patch
Status: 🔍

0-Day Time: 🔒

Patch: github.com


01/26/2024 Advisory disclosed
01/26/2024 +0 days CVE reserved
01/26/2024 +0 days VulDB entry created
02/20/2024 +24 days VulDB entry last update


Advisory: 1310
Status: Confirmed

CVE: CVE-2024-0962 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔒


Created: 01/26/2024 06:34 PM
Updated: 02/20/2024 12:08 AM
Changes: 01/26/2024 06:34 PM (44), 02/19/2024 11:59 PM (3), 02/20/2024 12:08 AM (28)
Complete: 🔍
Submitter: MSXF
Cache ID: 44:0C1:40



  • Submit #272859: https://github.com/obgm/ libcoap 4.3.4 (latest) Stack Based Buffer Overflow (by MSXF)


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