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Out-of-bounds Write Affecting libntlm package, versions <1.5-1+deb10u1

0.0
critical

Snyk CVSS

    Attack Complexity Low
    Confidentiality High
    Integrity High
    Availability High

    Threat Intelligence

    EPSS 0.63% (79th percentile)
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NVD
9.8 critical
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Red Hat
8.1 high

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  • Snyk ID SNYK-DEBIAN10-LIBNTLM-472901
  • published 10 Oct 2019
  • disclosed 10 Oct 2019
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Introduced: 10 Oct 2019

CVE-2019-17455 Open this link in a new tab
CWE-787 Open this link in a new tab

How to fix?

Upgrade Debian:10 libntlm to version 1.5-1+deb10u1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libntlm package and not the libntlm package as distributed by Debian. See How to fix? for Debian:10 relevant fixed versions and status.

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.

References