OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability

BID:101552

Info

OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability

Bugtraq ID: 101552
Class: Design Error
CVE: CVE-2017-15906
Remote: Yes
Local: No
Published: Oct 03 2017 12:00AM
Updated: May 02 2018 12:00PM
Credit: Michal Zalewski.
Vulnerable: Oracle Linux 7.0
OpenSSH OpenSSH 4.2
OpenSSH OpenSSH 4.1
OpenSSH OpenSSH 4.0 p1
OpenSSH OpenSSH 4.0
OpenSSH OpenSSH 3.9 p1
+ S.u.S.E. Linux Personal 9.2 x86_64
+ S.u.S.E. Linux Personal 9.2
OpenSSH OpenSSH 3.8.1 p1
+ Ubuntu Ubuntu Linux 4.1 ppc
+ Ubuntu Ubuntu Linux 4.1 ia64
+ Ubuntu Ubuntu Linux 4.1 ia32
OpenSSH OpenSSH 3.7.1
OpenSSH OpenSSH 3.7 p1
OpenSSH OpenSSH 3.7 .1p2
OpenSSH OpenSSH 3.7
OpenSSH OpenSSH 3.6.1
+ Novell Netware 6.5
OpenSSH OpenSSH 3.5
OpenSSH OpenSSH 3.4 p1-5
OpenSSH OpenSSH 3.4
OpenSSH OpenSSH 3.3
+ Openwall Openwall GNU/*/Linux (Owl)-current
OpenSSH OpenSSH 3.1
OpenSSH OpenSSH 3.0.2 p1
OpenSSH OpenSSH 3.0.2
- Debian Linux 3.0
+ FreeBSD FreeBSD 4.5 -STABLEpre2002-03-07
+ FreeBSD FreeBSD 4.5 -RELEASE
+ OpenPKG OpenPKG 1.0
+ Openwall Openwall GNU/*/Linux 0.1 -stable
+ SuSE Linux 8.0
OpenSSH OpenSSH 3.0.1 p1
OpenSSH OpenSSH 3.0.1
OpenSSH OpenSSH 3.0
OpenSSH OpenSSH 2.9
OpenSSH OpenSSH 2.5.2
OpenSSH OpenSSH 2.5
OpenSSH OpenSSH 2.3
- SuSE Linux 7.0 sparc
- SuSE Linux 7.0 ppc
- SuSE Linux 7.0 i386
- SuSE Linux 7.0 alpha
- SuSE Linux 6.4 ppc
- SuSE Linux 6.4 i386
- SuSE Linux 6.4 alpha
OpenSSH OpenSSH 2.2 .0p1
OpenSSH OpenSSH 2.2
+ NetBSD NetBSD 1.5
OpenSSH OpenSSH 2.1.1
+ SuSE Linux 7.0 sparc
+ SuSE Linux 7.0 ppc
+ SuSE Linux 7.0 i386
+ SuSE Linux 7.0 alpha
OpenSSH OpenSSH 2.1
OpenSSH OpenSSH 1.2.3
OpenSSH OpenSSH 1.2.2
OpenSSH OpenSSH 7.4
OpenSSH OpenSSH 7.3
OpenSSH OpenSSH 7.2
OpenSSH OpenSSH 7.1p1
OpenSSH OpenSSH 7.1
OpenSSH OpenSSH 7.0
OpenSSH OpenSSH 6.9p1
OpenSSH OpenSSH 6.9
OpenSSH OpenSSH 6.8
OpenSSH OpenSSH 6.7
+ NetBSD NetBSD 1.5.1
+ S.u.S.E. Linux Database Server 0
+ S.u.S.E. Linux Firewall on CD
+ S.u.S.E. Linux Live-CD for Firewall
+ S.u.S.E. SuSE eMail Server III
- SCO Open Server 5.0.6 a
- SCO Open Server 5.0.6
- SCO Open Server 5.0.5
- SCO Open Server 5.0.4
- SCO Open Server 5.0.3
- SCO Open Server 5.0.2
- SCO Open Server 5.0.1
- SCO Open Server 5.0
+ SuSE Linux 7.3
+ SuSE Linux 7.2
+ SuSE Linux 7.1
+ SuSE SUSE Linux Enterprise Server 7
OpenSSH OpenSSH 6.6
OpenSSH OpenSSH 6.5
OpenSSH OpenSSH 6.4
OpenSSH OpenSSH 6.3
OpenSSH OpenSSH 6.2
OpenSSH OpenSSH 6.1
OpenSSH OpenSSH 6.0
OpenSSH OpenSSH 5.8 p2
OpenSSH OpenSSH 5.8
OpenSSH OpenSSH 5.7
OpenSSH OpenSSH 5.6
OpenSSH OpenSSH 5.5
OpenSSH OpenSSH 5.4
OpenSSH OpenSSH 5.3
OpenSSH OpenSSH 5.1
OpenSSH OpenSSH 5.0
OpenSSH OpenSSH 4.9
OpenSSH OpenSSH 4.8
OpenSSH OpenSSH 4.7
OpenSSH OpenSSH 4.6
OpenSSH OpenSSH 4.5
OpenSSH OpenSSH 4.4.p1
OpenSSH OpenSSH 4.4
OpenSSH OpenSSH 4.3.0
OpenSSH OpenSSH 4.2p1
OpenSSH OpenSSH 1.127
OpenSSH OpenSSH 1.126
IBM Vios 2.2.3
IBM Vios 2.2.1 4
IBM Vios 2.2
IBM Vios 2.2.4.0
IBM Vios 2.2.3.50
IBM Vios 2.2.3.4
IBM Vios 2.2.3.3
IBM Vios 2.2.3.2
IBM Vios 2.2.3.0
IBM Vios 2.2.2.6
IBM Vios 2.2.2.5
IBM Vios 2.2.2.4
IBM Vios 2.2.2.0
IBM Vios 2.2.1.9
IBM Vios 2.2.1.8
IBM Vios 2.2.1.3
IBM Vios 2.2.1.1
IBM Vios 2.2.1.0
IBM Vios 2.2.0.13
IBM Vios 2.2.0.12
IBM Vios 2.2.0.11
IBM Vios 2.2.0.10
IBM Aix 7.2
IBM AIX 7.1
IBM AIX 6.1
IBM AIX 5.3
Bluecoat Security Analytics 7.3
Bluecoat Security Analytics 7.2
Bluecoat Malware Analysis Appliance 4.2
Bluecoat Director 6.1
Not Vulnerable: OpenSSH OpenSSH 7.6

Discussion

OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability

OpenSSH is prone to a remote security-bypass vulnerability.

Attackers can exploit this issue to perform unauthorized actions. This may aid in further attacks.

Versions prior to OpenSSH 7.6 are vulnerable.

Note: This issue was previously titled 'OpenSSH 'sftp-server' Remote Security Vulnerability'. The title has been changed to better reflect the vulnerability information.

Exploit / POC

OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability

Currently, we are not aware of any working exploits. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected].

Solution / Fix

OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability

Solution:
Updates are available. Please see the references or vendor advisory for more information.

References

OpenSSH 'sftp-server.c' Remote Security Bypass Vulnerability

References:

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