Memory disclosure via BSON size integer overflow
Published Jun 5, 2024 · Updated Feb 13, 2025
Out-of-bounds read in MongoDB PyMongo 4.6.2 and earlier allows remote attackers to disclose application memory through malformed BSON. The bson._cbsonmodule get_value routine adds attacker-controlled code and scope sizes using 32-bit arithmetic, allowing wraparound to bypass buffer-length checks. A malicious MongoDB server must return a crafted code-with-scope element; decoding can place adjacent process-memory bytes in an exception and interrupt the client operation.
Summary
What happened
Out-of-bounds read in MongoDB PyMongo 4.6.2 and earlier allows remote attackers to disclose application memory through malformed BSON. The bson._cbsonmodule get_value routine adds attacker-controlled code and scope sizes using 32-bit arithmetic, allowing wraparound to bypass buffer-length checks. A malicious MongoDB server must return a crafted code-with-scope element; decoding can place adjacent process-memory bytes in an exception and interrupt the client operation.
The record
- CVE
- CVE-2024-5629
- Published
- Jun 5, 2024
- Updated
- Feb 13, 2025
- Vendor
- MongoDB
- Product
- PyMongo
- Classifications
- CWE-125
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Jun 5, 2024CVE publishedPublication date reported by the CVE source.
- Feb 13, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
Compare your product and version with the public record. A matching version still requires validation against your environment.
Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=0 <=4.6.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- pymongo out-of-bounds read PoCproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
See the directory against your own environment.
Your stack
Check the software in your environment
Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.
Book a demo