vulnwire
9.8crit

CVE-2019-17455

Libntlm through 1.5 relies on a fixed buffer size for tSmbNtlmAuthRequest, tSmbNtlmAuthChallenge, and tSmbNtlmAuthResponse read and write o…

Published 7 y ago · modified 4 mo ago · JSON

CVSS
9.8
v3.1 · NVD
CISA KEV
No
not known exploited
EPSS
3.1%
percentile 88%
Public exploits
0
none known

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.

Exploit prediction (EPSS)

3.11% probability of exploitation in the next 30 days, higher than 88% of all scored CVEs.

CVSS scores

Assigned byVersionScoreVector
NVD3.19.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD2.07.5AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

References

  • gitlab.com /jas/libntlm/issues/2 · x_refsource_MISC, x_transferred
  • people.canonical.com /~ubuntu-security/cve/2019/CVE-2019-17455.html · x_refsource_CONFIRM, x_transferred
  • security-tracker.debian.org /tracker/CVE-2019-17455 · x_refsource_CONFIRM, x_transferred
  • bugs.debian.org /cgi-bin/bugreport.cgi?bug=942145 · x_refsource_MISC, x_transferred
  • lists.debian.org /debian-lts-announce/2020/05/msg00010.html · mailing-list, x_refsource_MLIST, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-06/msg00029.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • lists.opensuse.org /opensuse-security-announce/2020-06/msg00032.html · vendor-advisory, x_refsource_SUSE, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/3BVFO3OVJPMSGIXBKNOCVOJZ · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.fedoraproject.org /archives/list/package-announce%40lists.fedoraproject.org/message/YZ5YWYNOJ5HMCKAHWLTY4MXZ · vendor-advisory, x_refsource_FEDORA, x_transferred
  • lists.debian.org /debian-lts-announce/2021/11/msg00026.html · mailing-list, x_refsource_MLIST, x_transferred

Sources

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