CVE-2018-15473: Race Condition
First published: Wed Aug 15 2018(Updated: )
OpenSSH through 7.7 is prone to a user enumeration 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.
Credit: cve@mitre.org cve@mitre.org
| Affected Software | Affected Version | How to fix |
|---|---|---|
| IBM Security Identity Manager | <=7.0.1 | |
| debian/openssh | <=1:6.7p1-1<=1:7.7p1-1 | 1:7.7p1-4 1:7.4p1-10+deb9u4 |
| ubuntu/openssh | <1:7.6 | 1:7.6 |
| ubuntu/openssh | <1:7.7 | 1:7.7 |
| ubuntu/openssh | <1:6.6 | 1:6.6 |
| ubuntu/openssh | <1:7.2 | 1:7.2 |
| debian/openssh | 1:7.9p1-10+deb10u2 1:7.9p1-10+deb10u4 1:8.4p1-5+deb11u3 1:9.2p1-2+deb12u2 1:9.6p1-3 | |
| Openbsd Openssh | <=7.7 | |
| Debian Debian Linux | =8.0 | |
| Debian Debian Linux | =9.0 | |
| Redhat Enterprise Linux Desktop | =6.0 | |
| Redhat Enterprise Linux Desktop | =7.0 | |
| Redhat Enterprise Linux Server | =6.0 | |
| Redhat Enterprise Linux Server | =7.0 | |
| Redhat Enterprise Linux Workstation | =6.0 | |
| Redhat Enterprise Linux Workstation | =7.0 | |
| Canonical Ubuntu Linux | =14.04 | |
| Canonical Ubuntu Linux | =16.04 | |
| Canonical Ubuntu Linux | =18.04 | |
| Netapp Cn1610 Firmware | ||
| Netapp Cn1610 | ||
| Netapp Aff Baseboard Management Controller | ||
| Netapp Cloud Backup | ||
| Netapp Data Ontap Edge | ||
| Netapp Fas Baseboard Management Controller | ||
| Netapp Oncommand Unified Manager Vsphere | >=9.4 | |
| Netapp Ontap Select Deploy | ||
| NetApp Service Processor | ||
| Netapp Steelstore Cloud Integrated Storage | ||
| Netapp Virtual Storage Console Vsphere | >=7.2 | |
| NetApp Clustered Data ONTAP | ||
| Netapp Data Ontap 7-mode | ||
| Netapp Vasa Provider | >=7.2 | |
| NetApp Clustered Data ONTAP | ||
| Netapp Storage Replication Adapter Vsphere | >=7.2 | |
| Oracle Sun Zfs Storage Appliance Kit | =8.8.6 | |
| Siemens Scalance X204rna Firmware | <3.2.7 | |
| Siemens Scalance X204rna | ||
| All of | ||
| Netapp Cn1610 Firmware | ||
| Netapp Cn1610 | ||
| All of | ||
| Netapp Vasa Provider | >=7.2 | |
| NetApp Clustered Data ONTAP | ||
| All of | ||
| Netapp Storage Replication Adapter Vsphere | >=7.2 | |
| NetApp Clustered Data ONTAP | ||
| All of | ||
| Siemens Scalance X204rna Firmware | <3.2.7 | |
| Siemens Scalance X204rna |
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Reference Links
- http://www.openwall.com/lists/oss-security/2018/08/15/5
- https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0
- https://salsa.debian.org/ssh-team/openssh/commit/4641c58a3279f6b118f9562babaa0ee050a38619
- https://bugs.debian.org/906236
- https://security-tracker.debian.org/tracker/CVE-2018-15473
- https://bugzilla.mindrot.org/show_bug.cgi?id=2898
- http://abramowitz.uvt.nl/
- https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=906236
- https://exchange.xforce.ibmcloud.com/vulnerabilities/148397
- https://www.ibm.com/support/pages/node/1288714 (Advisory)
- http://www.securitytracker.com/id/1041487
- https://lists.debian.org/debian-lts-announce/2018/08/msg00022.html
- https://www.exploit-db.com/exploits/45210/
- https://www.exploit-db.com/exploits/45233/
- https://www.debian.org/security/2018/dsa-4280
- http://www.securityfocus.com/bid/105140
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2018-0011
- https://security.gentoo.org/glsa/201810-03
- https://security.netapp.com/advisory/ntap-20181101-0001/
- https://usn.ubuntu.com/3809-1/
- https://www.exploit-db.com/exploits/45939/
- https://access.redhat.com/errata/RHSA-2019:0711
- https://access.redhat.com/errata/RHSA-2019:2143
- https://www.oracle.com/security-alerts/cpujan2020.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-412672.pdf
- https://launchpad.net/bugs/cve/CVE-2018-15473
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=1619064
- https://access.redhat.com/solutions/8687
- https://bugzilla.redhat.com/show_bug.cgi?id=1619063
- https://www.openwall.com/lists/oss-security/2018/08/15/5
- https://anongit.mindrot.org/openssh.git/commit/?id=74287f5df9966a0648b4a68417451dd18f079ab8
- https://bugfuzz.com/stuff/ssh-check-username.py
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15473
- https://ubuntu.com/security/notices/USN-3809-1
- https://nvd.nist.gov/vuln/detail/CVE-2018-15473
- https://ubuntu.com/security/CVE-2018-15473
Frequently Asked Questions
What is CVE-2018-15473?
CVE-2018-15473 is a user enumeration vulnerability in OpenSSH through 7.7.
How severe is CVE-2018-15473?
CVE-2018-15473 has a severity score of 5.3, which is considered high.
Which versions of OpenSSH are affected by CVE-2018-15473?
OpenSSH versions up to and including 7.7 are affected by CVE-2018-15473.
How can I fix CVE-2018-15473?
To fix CVE-2018-15473, update OpenSSH to version 7.7 or higher.
Where can I find more information about CVE-2018-15473?
More information about CVE-2018-15473 can be found at the following references: [link1](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15473), [link2](http://www.openwall.com/lists/oss-security/2018/08/15/5), [link3](https://github.com/openbsd/src/commit/779974d35b4859c07bc3cb8a12c74b43b0a7d1e0).
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- vendor/oracle
- canonical/oracle sun zfs storage appliance kit
- version/oracle sun zfs storage appliance kit/8.8.6
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