CVE-2018-18508

moderate-risk
Published 2020-10-22

In Network Security Services (NSS) before 3.36.7 and before 3.41.1, a malformed signature can cause a crash due to a null dereference, resulting in a Denial of Service.

Do I need to act?

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0.56% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
6
CVSS 6.5/10 Medium
NETWORK / LOW complexity

Affected Products (9)

Affected Vendors

Siemens Mozilla

References (8)

Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
Release Notes https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.7_release...
Release Notes https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release...
Third Party Advisory https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
Third Party Advisory https://cert-portal.siemens.com/productcert/pdf/ssa-379803.pdf
Release Notes https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.36.7_release...
Release Notes https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS_3.41.1_release...
Third Party Advisory https://us-cert.cisa.gov/ics/advisories/icsa-21-040-04
41
/ 100
moderate-risk
Severity 24/34 · High
Exploitability 2/34 · Minimal
Exposure 15/34 · Moderate