CVE-2019-17455
Published: 10 October 2019
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.
From the Ubuntu security team
It was discovered that Libntlm incorrectly handled specially crafted NTML requests. An attacker could possibly use this issue to cause a denial of service or another unspecified impact.
Priority
Medium
CVSS 3 base score: 9.8
Status
| Package | Release | Status |
|---|---|---|
|
libntlm Launchpad, Ubuntu, Debian |
Upstream |
Released
(1.6)
|
| Ubuntu 21.10 (Impish Indri) |
Not vulnerable
(1.6-1)
|
|
| Ubuntu 21.04 (Hirsute Hippo) |
Not vulnerable
(1.6-1)
|
|
| Ubuntu 20.04 LTS (Focal Fossa) |
Released
(1.5-2ubuntu0.1)
|
|
| Ubuntu 18.04 LTS (Bionic Beaver) |
Released
(1.4-8ubuntu0.1)
|
|
| Ubuntu 16.04 ESM (Xenial Xerus) |
Ignored
(end of standard support, was needs-triage)
|
|
| Ubuntu 14.04 ESM (Trusty Tahr) |
Released
(1.4-1ubuntu0.1~esm1)
|
|
|
Patches: Upstream: https://gitlab.com/jas/libntlm/-/commit/b967886873fcf19f816b9c0868465f2d9e5df85e |
||
Notes
| Author | Note |
|---|---|
| ebarretto | No fix available as of 2019-12-04 |
References
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-17455
- https://gitlab.com/jas/libntlm/issues/2
- https://ubuntu.com/security/notices/USN-5108-1
- NVD
- Launchpad
- Debian