CVE-2017-18594

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.17% Top 25%
Vendor Advisory opensuse.org Vendor Advisory opensuse.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://seclists.org/nmap-dev/2018/q2/45 third party advisory mailing list
https://github.com/nmap/nmap/issues/1227 third party advisory exploit
https://github.com/nmap/nmap/commit/350bbe0597d37ad67abe5fef8fba984707b4e9ad third party advisory patch
https://github.com/nmap/nmap/issues/1077 third party advisory patch
https://github.com/AMatchandaHaystack/Research/blob/master/Nmap%26libsshDF third party advisory
https://seclists.org/nmap-announce/2019/0 third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00073.html vendor advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00075.html vendor advisory

Frequently Asked Questions

What is the severity of CVE-2017-18594?
CVE-2017-18594 has been scored as a high severity vulnerability.
How to fix CVE-2017-18594?
To fix CVE-2017-18594, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2017-18594 being actively exploited in the wild?
It is possible that CVE-2017-18594 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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