CVE-2018-15919

Description

Remotely observable behaviour in auth-gss2.c in OpenSSH through 7.8 could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. NOTE: the discoverer states 'We understand that the OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability.'

Category

5.3
CVSS
Severity: Medium
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.85% Top 20%
Third-Party Advisory seclists.org Third-Party Advisory securityfocus.com Third-Party Advisory netapp.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://security.netapp.com/advisory/ntap-20181221-0001/ third party advisory
http://www.securityfocus.com/bid/105163 vdb entry third party advisory
http://seclists.org/oss-sec/2018/q3/180 mailing list third party advisory patch

Frequently Asked Questions

What is the severity of CVE-2018-15919?
CVE-2018-15919 has been scored as a medium severity vulnerability.
How to fix CVE-2018-15919?
To fix CVE-2018-15919, 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-2018-15919 being actively exploited in the wild?
It is possible that CVE-2018-15919 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~2% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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