SB2020082537 - Heap-based buffer overflow in libIEC61850

Description

This security bulletin contains information about 1 vulnerability.

1) Heap-based buffer overflow (CVE-ID: CVE-2020-15158)

CWE-ID: CWE-122 - Heap-based Buffer Overflow

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to execute arbitrary code.

The vulnerability exists due to integer underflow leading to a heap-based buffer overflow in cotp.c when processing a COTP message with an invalid length field value less than 4. A remote attacker can send a specially crafted COTP message to execute arbitrary code.

The issue can also cause an application crash on affected platforms.

Remediation

Install update from vendor's website.

References

• https://github.com/mz-automation/libiec61850/security/advisories/GHSA-pq77-fmf7-hjw8
• https://github.com/mz-automation/libiec61850/issues/250