What is CVE-2018-18834?

CVE-2018-18834 is a critical-severity vulnerability in Mz-automation Libiec61850, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2018-10-30.

How severe is CVE-2018-18834?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2018-18834 known to be exploited?

3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Buffer overflow in Mz-automation Libiec61850

CVE-2018-18834

An issue has been found in libIEC61850 v1.3. It is a heap-based buffer overflow in BerEncoder_encodeOctetString in mms/asn1/ber_encoder.c.

Vulnerability class: Buffer Overflow

EPSS: 0.021 (79.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Mz-automation Libiec61850 — versions 1.3
N/a — versions n/a

Weakness classification (CWE)

CWE-787 — Out-of-bounds Write

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2018-18834?: CVE-2018-18834 is a critical-severity vulnerability in Mz-automation Libiec61850, classified under Out-of-bounds Write. CVSS score: 9.8/10. Published 2018-10-30.
How severe is CVE-2018-18834?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-18834 known to be exploited?: 3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.