MongoDB v8.3.0 Heap Buffer Underflow in OpenLDAP LMDB mdb_load

Key Points:

• A heap buffer underflow vulnerability exists in the readline() function of OpenLDAP's LMDB mdb_load utility, triggered by malformed input data.
• The vulnerability can lead to information disclosure through heap memory leakage and potential denial of service, affecting systems utilizing OpenLDAP's LMDB.
• It is recommended to apply patches as they become available and to validate input data rigorously to prevent exploitation.

Technical Details: The vulnerability is identified as a heap buffer underflow that occurs due to an integer underflow in the offset calculation, leading to an out-of-bounds read. This issue can be exploited locally, resulting in the disclosure of adjacent heap memory.

MITRE ATT&CK Techniques: None mentioned

IOCs Mentioned: None mentioned