SUSE: 2018:3686-1 Moderate: OpenSSH User Existence Oracle Issue
suse
November 8, 2018
An update that solves two vulnerabilities and has three fixes is now available
Summary
This update for openssh fixes the following issues: - CVE-2018-15919: Remotely observable behaviour in auth-gss2.c in OpenSSH could be used by remote attackers to detect existence of users on a target system when GSS2 is in use. OpenSSH developers do not want to treat such a username enumeration (or "oracle") as a vulnerability. (bsc#1106163) - CVE-2018-15473: OpenSSH was prone to a user existance oracle vulnerability due to not delaying bailout for an invalid authenticating user until after the packet containing the request has been fully parsed, related to auth2-gss.c, auth2-hostbased.c, and auth2-pubkey.c. (bsc#1105010) The following non-security issues were fixed: - Stop leaking File descriptors (bsc#964336) - sftp-client.c returns wrong error code upon failure (bsc#1091396)
Topics Covered
References
#1081947 #1091396 #1105010 #1106163 #964336
Cross- CVE-2018-15473 CVE-2018-15919
Affected Products:
SUSE Linux Enterprise Module for Server Applications 15
SUSE Linux Enterprise Module for Open Buildservice Development Tools 15
SUSE Linux Enterprise Module for Desktop Applications 15
SUSE Linux Enterprise Module for Basesystem 15
https://www.suse.com/security/cve/CVE-2018-15473.html
https://www.suse.com/security/cve/CVE-2018-15919.html
https://bugzilla.suse.com/1081947
https://bugzilla.suse.com/1091396
https://bugzilla.suse.com/1105010
https://bugzilla.suse.com/1106163
https://bugzilla.suse.com/964336
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Announcement ID: SUSE-SU-2018:3686-1
Rating: moderate
Topics Covered
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