CVE-2019-17455 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....
CriticalCVSS 9.8
EPSS 3.1%
- Published
- Updated
- Exploit status
- No public exploit known
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.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| debian/libntlm(Debian:12) | < 1.6-1 | 1.6-1 |
| debian/libntlm(Debian:13) | < 1.6-1 | 1.6-1 |
| debian/libntlm(Debian:14) | < 1.6-1 | 1.6-1 |
| nongnu libntlm | <= 1.5 | No fix listed |
| debian linux | = 8.0 | No fix listed |
| debian linux | = 9.0 | No fix listed |
| Canonical Ubuntu Linux | = 14.04 | No fix listed |
| Canonical Ubuntu Linux | = 16.04 | No fix listed |
| Canonical Ubuntu Linux | = 18.04 | No fix listed |
| Canonical Ubuntu Linux | = 20.04 | No fix listed |
| fedoraproject fedora | = 32 | No fix listed |
| fedoraproject fedora | = 33 | No fix listed |
| openSUSE backports sle | = 15.0-sp1 | No fix listed |
| openSUSE leap | = 15.1 | No fix listed |
References
- Debian Security Tracker CVE-2019-17455 third-party-advisory vendor-advisory
- openSUSE-SU-2020:0816 mailing-list third-party-advisory vendor-advisory
- openSUSE-SU-2020:0806 mailing-list third-party-advisory vendor-advisory
- bugs.debian.org exploit issue-tracking mailing-list third-party-advisory
- gitlab.com exploit third-party-advisory
- [debian-lts-announce] 20200510 [SECURITY] [DLA 2207-1] libntlm security update mailing-list third-party-advisory
- [debian-lts-announce] 20211128 [SECURITY] [DLA 2831-1] libntlm security update mailing-list third-party-advisory
- FEDORA-2020-8794383d6f vendor-advisory
- FEDORA-2020-1f643c272c vendor-advisory
- people.canonical.com third-party-advisory
- bugs.debian.org issue-tracking