Vulnerability Details : CVE-2019-17455
Potential exploit
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.
Products affected by CVE-2019-17455
- cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
- cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
- 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:a:nongnu:libntlm:*:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:32:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*
- cpe:2.3:o:opensuse:leap:15.1:*:*:*:*:*:*:*
- cpe:2.3:a:opensuse:backports_sle:15.0:sp1:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2019-17455
0.69%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 80 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2019-17455
Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
---|---|---|---|---|---|---|
7.5
|
HIGH | AV:N/AC:L/Au:N/C:P/I:P/A:P |
10.0
|
6.4
|
NIST | |
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2019-17455
-
The product reads data past the end, or before the beginning, of the intended buffer.Assigned by: nvd@nist.gov (Primary)
References for CVE-2019-17455
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https://security-tracker.debian.org/tracker/CVE-2019-17455
CVE-2019-17455Third Party Advisory
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https://lists.debian.org/debian-lts-announce/2020/05/msg00010.html
[SECURITY] [DLA 2207-1] libntlm security updateMailing List;Third Party Advisory
-
https://lists.debian.org/debian-lts-announce/2021/11/msg00026.html
[SECURITY] [DLA 2831-1] libntlm security updateMailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00032.html
[security-announce] openSUSE-SU-2020:0806-1: moderate: Security update fMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YZ5YWYNOJ5HMCKAHWLTY4MXZQWJJCBI7/
[SECURITY] Fedora 32 Update: libntlm-1.6-1.fc32 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=942145
#942145 - libntlm: CVE-2019-17455 - Debian Bug report logsExploit;Issue Tracking;Mailing List;Third Party Advisory
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http://lists.opensuse.org/opensuse-security-announce/2020-06/msg00029.html
[security-announce] openSUSE-SU-2020:0816-1: moderate: Security update fMailing List;Third Party Advisory
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https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3BVFO3OVJPMSGIXBKNOCVOJZ3UTGZQF5/
[SECURITY] Fedora 33 Update: libntlm-1.6-1.fc33 - package-announce - Fedora Mailing-ListsMailing List;Third Party Advisory
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https://gitlab.com/jas/libntlm/issues/2
Buffer Overflow Write when libntlm generates NTLM request (version<=1.5) (#2) · Issues · Simon Josefsson / Libntlm · GitLabExploit;Third Party Advisory
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https://people.canonical.com/~ubuntu-security/cve/2019/CVE-2019-17455.html
CVE-2019-17455 in UbuntuThird Party Advisory
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