CWE
200
Advisory Published
Updated

CVE-2018-15919: Infoleak

First published: Tue Aug 28 2018(Updated: )

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.'

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Openbsd Openssh>=5.9<=7.8
Netapp Cloud Backup
Netapp Data Ontap Edge
Netapp Ontap Select Deploy
Netapp Steelstore
Netapp Cn1610 Firmware
Netapp Cn1610

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Frequently Asked Questions

  • What is CVE-2018-15919?

    CVE-2018-15919 is a vulnerability in OpenSSH that allows remote attackers to detect the existence of users on a target system.

  • How can this vulnerability be exploited?

    This vulnerability can be exploited by remote attackers to remotely observe the behavior of the auth-gss2.c file in OpenSSH.

  • Which software is affected by CVE-2018-15919?

    OpenSSH versions 5.9 to 7.8 are affected by this vulnerability, as well as certain versions of Netapp Cloud Backup, Netapp Data ONTAP Edge, Netapp ONTAP Select Deploy, and Netapp Steelstore.

  • What is the severity of CVE-2018-15919?

    The severity of CVE-2018-15919 is medium with a CVSS score of 5.3.

  • How can I mitigate this vulnerability?

    To mitigate this vulnerability, update OpenSSH to a version that is not affected, or apply the necessary patches provided by the software vendor.

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