CVE-2020-15158
moderate-risk
Published 2020-08-26
In libIEC61850 before version 1.4.3, when a message with COTP message length field with value < 4 is received an integer underflow will happen leading to heap buffer overflow. This can cause an application crash or on some platforms even the execution of remote code. If your application is used in open networks or there are untrusted nodes in the network it is highly recommend to apply the patch. This was patched with commit 033ab5b. Users of version 1.4.x should upgrade to version 1.4.3 when available. As a workaround changes of commit 033ab5b can be applied to older versions.
Do I need to act?
~
2.4% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.7/10
High
NETWORK
/ HIGH complexity
Affected Products (1)
Affected Vendors
References (6)
Third Party Advisory
https://github.com/mz-automation/libiec61850/issues/250
Third Party Advisory
https://github.com/mz-automation/libiec61850/security/advisories/GHSA-pq77-fmf7-...
Third Party Advisory
https://github.com/mz-automation/libiec61850/issues/250
Third Party Advisory
https://github.com/mz-automation/libiec61850/security/advisories/GHSA-pq77-fmf7-...
33
/ 100
moderate-risk
Severity
23/34 · High
Exploitability
5/34 · Minimal
Exposure
5/34 · Minimal