CVE-2019-17455
libntlm0: Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthRes...
CVE-2019-17455 is fixed in libntlm0 on 1 platform, first by libntlm0 1.4-8ubuntu0.1, released October 10, 2019. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
n/a
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0311
87th percentile
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| libntlm0 · Ubuntu 18.04.6 LTS (bionic) | 1.4-8ubuntu0.1 | libntlm0 1.4-8ubuntu0.1 | Oct 10, 2019 |
| libntlm0 · Ubuntu 20.04 LTS (focal) | 1.5-2ubuntu0.1 | libntlm0 1.5-2ubuntu0.1 | Oct 10, 2019 |