Vulnerability Description
nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \n character to ssh-brute.nse or ssh-auth-methods.nse.
CVSS Score
7.5
HIGH
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Nmap | Nmap | 7.70 |
Related Weaknesses (CWE)
References
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.html
- https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDFThird Party Advisory
- https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9adPatchThird Party Advisory
- https://github.com/nmap/nmap/issues/1077PatchThird Party Advisory
- https://github.com/nmap/nmap/issues/1227ExploitThird Party Advisory
- https://seclists.org/nmap-announce/2019/0Mailing ListThird Party Advisory
- https://seclists.org/nmap-dev/2018/q2/45Mailing ListThird Party Advisory
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.html
- http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.html
- https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDFThird Party Advisory
- https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9adPatchThird Party Advisory
- https://github.com/nmap/nmap/issues/1077PatchThird Party Advisory
- https://github.com/nmap/nmap/issues/1227ExploitThird Party Advisory
- https://seclists.org/nmap-announce/2019/0Mailing ListThird Party Advisory
FAQ
What is CVE-2017-18594?
CVE-2017-18594 is a vulnerability with a CVSS score of 7.5 (HIGH). nse_libssh2.cc in Nmap 7.70 is subject to a denial of service condition due to a double free when an SSH connection fails, as demonstrated by a leading \n character to ssh-brute.nse or ssh-auth-method...
How severe is CVE-2017-18594?
CVE-2017-18594 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2017-18594?
Check the references section above for vendor advisories and patch information. Affected products include: Nmap Nmap.