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RedhatCVE-2016-0739

HistoryApr 13, 2016 - 5:59 p.m.

CVE-2016-0739

2016-04-1317:59:08

CWE-200

redhat

web.nvd.nist.gov

libssh

cve-2016-0739

vulnerability

key exchange

ssh

man-in-the-middle

CVSS2

4.3

Attack Vector

NETWORK

Attack Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

NONE

AV:N/AC:M/Au:N/C:P/I:N/A:N

CVSS3

5.9

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

NONE

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

AI Score

5.6

Confidence

High

EPSS

0.004

Percentile

73.4%

JSON

libssh before 0.7.3 improperly truncates ephemeral secrets generated for the (1) diffie-hellman-group1 and (2) diffie-hellman-group14 key exchange methods to 128 bits, which makes it easier for man-in-the-middle attackers to decrypt or intercept SSH sessions via unspecified vectors, aka a “bits/bytes confusion bug.”

Affected configurations

Nvd

Node

redhatenterprise_linuxMatch7.0

Node

canonicalubuntu_linuxMatch12.04lts

canonicalubuntu_linuxMatch14.04lts

canonicalubuntu_linuxMatch15.10

Node

libsshlibsshRange≤0.7.2

Node

fedoraprojectfedoraMatch22

fedoraprojectfedoraMatch23

Node

debiandebian_linuxMatch7.0

debiandebian_linuxMatch8.0

VendorProductVersionCPE
redhatenterprise_linux7.0cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
canonicalubuntu_linux12.04cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
canonicalubuntu_linux14.04cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
canonicalubuntu_linux15.10cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
libsshlibssh*cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*
fedoraprojectfedora22cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
fedoraprojectfedora23cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
debiandebian_linux7.0cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
debiandebian_linux8.0cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
redhat	enterprise_linux	7.0	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
canonical	ubuntu_linux	12.04	cpe:2.3:o:canonical:ubuntu_linux:12.04::::lts:::
canonical	ubuntu_linux	14.04	cpe:2.3:o:canonical:ubuntu_linux:14.04::::lts:::
canonical	ubuntu_linux	15.10	cpe:2.3:o:canonical:ubuntu_linux:15.10:::::::*
libssh	libssh	*	cpe:2.3:a:libssh:libssh::::::::
fedoraproject	fedora	22	cpe:2.3:o:fedoraproject:fedora:22:::::::*
fedoraproject	fedora	23	cpe:2.3:o:fedoraproject:fedora:23:::::::*
debian	debian_linux	7.0	cpe:2.3:o:debian:debian_linux:7.0:::::::*
debian	debian_linux	8.0	cpe:2.3:o:debian:debian_linux:8.0:::::::*