CVE-2019-17455
high-risk
Published 2019-10-10
Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write operations, as demonstrated by a stack-based buffer over-read in buildSmbNtlmAuthRequest in smbutil.c for a crafted NTLM request.
Do I need to act?
~
7.1% 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
9
CVSS 9.8/10
Critical
NETWORK
/ LOW complexity
Affected Products (11)
Affected Vendors
References (20)
Third Party Advisory
https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-17455.html
Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2019-17455
Third Party Advisory
https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-17455.html
Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2019-17455
57
/ 100
high-risk
Severity
32/34 · Critical
Exploitability
9/34 · Low
Exposure
16/34 · Moderate