Critical severity9.8NVD Advisory· Published Oct 10, 2019· Updated Jun 17, 2026
CVE-2019-17455
CVE-2019-17455
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
15cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*+ 3 more
- cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*
- cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*
cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
- osv-coords2 versionspkg:rpm/suse/libntlm&distro=SUSE%20Package%20Hub%2015%20SP1pkg:rpm/opensuse/libntlm&distro=openSUSE%20Leap%2015.1
< 1.6-bp151.4.3.1+ 1 more
- (no CPE)range: < 1.6-bp151.4.3.1
- (no CPE)range: < 1.6-lp151.3.3.1
- Libntlm/Libntlmdescription
Patches
Vulnerability mechanics
References
10- bugs.debian.org/cgi-bin/bugreport.cginvdExploitIssue TrackingMailing ListThird Party Advisory
- gitlab.com/jas/libntlm/issues/2nvdExploitThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00029.htmlnvdMailing ListThird Party Advisory
- lists.opensuse.org/opensuse-security-announce/2020-06/msg00032.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2020/05/msg00010.htmlnvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2021/11/msg00026.htmlnvdMailing ListThird Party Advisory
- people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-17455.htmlnvdThird Party Advisory
- security-tracker.debian.org/tracker/CVE-2019-17455nvdThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3BVFO3OVJPMSGIXBKNOCVOJZ3UTGZQF5/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YZ5YWYNOJ5HMCKAHWLTY4MXZQWJJCBI7/nvd
News mentions
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