Buffer overflow in Moxa Awk-3131a
CVE-2019-5143
An exploitable format string vulnerability exists in the iw_console conio_writestr functionality of the Moxa AWK-3131A firmware version 1.13. A specially crafted time server entry can cause an overflow of the time server buffer, resulting in remote code execution. An attacker can send commands while authenticated as a low privilege user to trigger this vulnerability.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.045 (91.1th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 91st percentile — 91.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.045 · newest: 0.045 · change: 0.000
Affected products
- Moxa Awk-3131a
- Moxa Awk-3131a Firmware — versions 1.13
- Moxa — versions Moxa AWK-3131A Firmware version 1.13
Weakness classification (CWE)
References
- talosintelligence.com/vulnerability_reports/TALOS-2019-0932 (Technical Description, Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-5143?
- CVE-2019-5143 is a high-severity vulnerability in Moxa Awk-3131a, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 8.8/10. Published 2020-02-25.
- How severe is CVE-2019-5143?
- High severity. CVSS v3 base score is 8.8 out of 10.