OpenSSH Certificate Validation Security Bypass Vulnerability

BID:66459

Info

OpenSSH Certificate Validation Security Bypass Vulnerability

Bugtraq ID: 66459
Class: Design Error
CVE: CVE-2014-2653
Remote: Yes
Local: No
Published: Mar 24 2014 12:00AM
Updated: Aug 12 2015 10:24PM
Credit: Matthew Vernon
Vulnerable: Ubuntu Ubuntu Linux 13.10
Ubuntu Ubuntu Linux 12.10 i386
Ubuntu Ubuntu Linux 12.10 amd64
Ubuntu Ubuntu Linux 12.04 LTS i386
Ubuntu Ubuntu Linux 12.04 LTS amd64
Redhat Enterprise Linux Workstation Optional 6
Redhat Enterprise Linux Workstation 6
Redhat Enterprise Linux Server Optional 6
Redhat Enterprise Linux Server 6
Redhat Enterprise Linux HPC Node Optional 6
Redhat Enterprise Linux HPC Node 6
Redhat Enterprise Linux Desktop Optional 6
Redhat Enterprise Linux Desktop 6
Oracle Enterprise Linux 7
Oracle Enterprise Linux 6.2
Oracle Enterprise Linux 6
OpenBSD OpenSSH 1:6.0p1-4
Mandriva Business Server 1 X86 64
Mandriva Business Server 1
IBM Virtual I/O Server (VIOS) 2.2.3
IBM Virtual I/O Server (VIOS) 2.2.2
IBM Virtual I/O Server (VIOS) 2.2.1 4
IBM Virtual I/O Server (VIOS) 2.2.1
IBM Virtual I/O Server (VIOS) 2.2.3.3
IBM Virtual I/O Server (VIOS) 2.2.2.4
IBM Virtual I/O Server (VIOS) 2.2.1.8
IBM Virtual I/O Server (VIOS) 2.2
IBM System x3950 X6 Type 3837 0
IBM System x3850 X6 Type 3837 0
IBM System X3750 M4 8752
IBM System x3650 M4 Type 7915 0
IBM System x3650 M4 HD 5460
IBM System x3630 M4 HD 5466
IBM System X3630 M4 7158
IBM System x3570 M4 type 8733 0
IBM System x3570 M4 type 8722 0
IBM System x3570 M4 type 8718 0
IBM System X3550 M4 7914
IBM System X3530 M4 7160
IBM System X3500 M4 7383
IBM System x3300 M4 7382
IBM System x3250 M5 type 5458 0
IBM System X3250 M4 2583
IBM System x3100 M5 type 5457 0
IBM System X3100 M4 2582
IBM NeXtScale nx360 M4 type 5455 0
IBM iDatplex dx360 M4 Water Cooled type 7919 0
IBM iDatplex dx360 M4 Water Cooled type 7918 0
IBM iDatplex dx360 M4 type 7913 0
IBM iDatplex dx360 M4 type 7912 0
IBM GPFS for Windows 3.5.0.11
IBM GPFS for Windows 3.5
IBM Flex System x880 Compute Node 7903
IBM Flex System x880 Compute Node 4259
IBM Flex System X440 Compute Node 7917
IBM Flex System X240 Compute Node 8956
IBM Flex System X240 Compute Node 8738
IBM Flex System X240 Compute Node 8737
IBM Flex System X240 Compute Node 7863
IBM Flex System x222 Compute Node 7916
IBM Flex System X220 Compute Node 7906
IBM Flex System X220 Compute Node 2585
IBM Flex System Manager Node 8734
IBM Flex System Manager Node 8731
IBM Flex System Manager Node 7955
IBM Flex System Manager 1.3.2 0
IBM Flex System Manager 1.3.2
IBM Flex System Manager 1.2.1
IBM Flex System Manager 1.2
IBM Flex System Manager 1.1
IBM Flex System Manager 1.3.1
IBM Flex System Manager 1.3.0.1
IBM Flex System Manager 1.3.0
IBM BladeCenter Advanced Management Module 3.66G
IBM AIX 7.1
IBM AIX 6.1
IBM AIX 5.3
HP HP-UX B.11.31
HP HP-UX B.11.23
HP HP-UX B.11.11
FreeBSD Freebsd 9.3-RELEASE-p9
FreeBSD FreeBSD 9.3-RELEASE-p6
FreeBSD FreeBSD 9.3-RELEASE-p5
FreeBSD FreeBSD 9.3-RELEASE-p3
FreeBSD FreeBSD 9.3-RELEASE-p2
FreeBSD Freebsd 9.3-RELEASE-p13
FreeBSD Freebsd 9.3-RELEASE-p10
FreeBSD FreeBSD 9.3-RELEASE-p1
FreeBSD FreeBSD 9.3
FreeBSD FreeBSD 8.4-RELEASE-p9
FreeBSD FreeBSD 8.4-RELEASE-p8
FreeBSD FreeBSD 8.4-RELEASE-p7
FreeBSD FreeBSD 8.4-RELEASE-p4
FreeBSD Freebsd 8.4-RELEASE-p27
FreeBSD Freebsd 8.4-RELEASE-p24
FreeBSD Freebsd 8.4-RELEASE-p23
FreeBSD FreeBSD 8.4-RELEASE-p20
FreeBSD FreeBSD 8.4-RELEASE-p19
FreeBSD FreeBSD 8.4-RELEASE-p17
FreeBSD FreeBSD 8.4-RELEASE-p16
FreeBSD FreeBSD 8.4-RELEASE-p15
FreeBSD FreeBSD 8.4-RELEASE-p14
FreeBSD FreeBSD 8.4-RELEASE-p13
FreeBSD FreeBSD 8.4-RELEASE-p12
FreeBSD FreeBSD 8.4-RELEASE-p11
FreeBSD FreeBSD 8.4
FreeBSD Freebsd 10.2
FreeBSD Freebsd 10.1-RELEASE-p9
FreeBSD Freebsd 10.1-RELEASE-p6
FreeBSD Freebsd 10.1-RELEASE-p5
FreeBSD FreeBSD 10.1-RELEASE-p1
FreeBSD Freebsd 10.1-RELEASE
FreeBSD FreeBSD 10.1
Debian Linux 6.0 sparc
Debian Linux 6.0 s/390
Debian Linux 6.0 powerpc
Debian Linux 6.0 mips
Debian Linux 6.0 ia-64
Debian Linux 6.0 ia-32
Debian Linux 6.0 arm
Debian Linux 6.0 amd64
Not Vulnerable:

Discussion

OpenSSH Certificate Validation Security Bypass Vulnerability

OpenSSH is prone to a security-bypass vulnerability.

Attackers can exploit this issue to bypass certain security restrictions and perform unauthorized actions. This may aid in further attacks.

OpenSSH 1:6.0p1-4 is vulnerable.

Exploit / POC

OpenSSH Certificate Validation Security Bypass Vulnerability

An attacker can exploit this issue using readily available tools.

Solution / Fix

OpenSSH Certificate Validation Security Bypass Vulnerability

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

References

OpenSSH Certificate Validation Security Bypass Vulnerability

References:

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