Memory disclosure via undersized Antelope index filenames
Published Apr 26, 2023 · Updated Jan 30, 2025
Out-of-bounds read in Contiki-NG 4.8 and earlier allows attackers with direct Antelope DBMS access to disclose adjacent memory. The storage_get_index and storage_put_index functions allocate a merged relation-and-suffix filename without room for its trailing null byte, so cfs_open reads past the buffer. Exploitation requires direct DBMS access, such as the ability to issue shell commands on the IoT node; only confidentiality impact is reported.
Summary
What happened
Out-of-bounds read in Contiki-NG 4.8 and earlier allows attackers with direct Antelope DBMS access to disclose adjacent memory. The storage_get_index and storage_put_index functions allocate a merged relation-and-suffix filename without room for its trailing null byte, so cfs_open reads past the buffer. Exploitation requires direct DBMS access, such as the ability to issue shell commands on the IoT node; only confidentiality impact is reported.
The record
- CVE
- CVE-2023-30546
- Published
- Apr 26, 2023
- Updated
- Jan 30, 2025
- Vendor
- Contiki-NG
- Product
- Contiki-NG
- Classifications
- CWE-125, CWE-193
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Apr 26, 2023CVE publishedPublication date reported by the CVE source.
- Jan 30, 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=<= 4.8
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.
Public exploit references
No public exploit references are available in this record.
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