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Vulnerability details: VCID-wu41-e9qk-aaag
Vulnerability ID VCID-wu41-e9qk-aaag
Aliases CVE-2016-0739
Summary 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."
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (2)
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
CWE-704 Incorrect Type Conversion or Cast
System Score Found at
generic_textual Medium http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-0739.html
rhas Moderate https://access.redhat.com/errata/RHSA-2016:0566
epss 0.00329 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
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epss 0.00329 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.00390 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.00390 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
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epss 0.02146 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
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epss 0.02146 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.02146 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.02146 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.02146 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.02146 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.0237 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.0237 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.0237 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
epss 0.02391 https://api.first.org/data/v1/epss?cve=CVE-2016-0739
rhbs medium https://bugzilla.redhat.com/show_bug.cgi?id=1305971
generic_textual Medium https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0739
cvssv2 5.8 https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
cvssv2 4.3 https://nvd.nist.gov/vuln/detail/CVE-2016-0739
cvssv3 5.9 https://nvd.nist.gov/vuln/detail/CVE-2016-0739
generic_textual Medium https://ubuntu.com/security/notices/USN-2912-1
generic_textual Medium https://www.libssh2.org/adv_20160223.html
generic_textual Medium https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
Reference id Reference type URL
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/178058.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-March/178822.html
http://lists.opensuse.org/opensuse-updates/2016-03/msg00111.html
http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-0739.html
http://rhn.redhat.com/errata/RHSA-2016-0566.html
https://access.redhat.com/hydra/rest/securitydata/cve/CVE-2016-0739.json
https://api.first.org/data/v1/epss?cve=CVE-2016-0739
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2016-0739
https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
https://puppet.com/security/cve/CVE-2016-0739
https://security.gentoo.org/glsa/201606-12
https://ubuntu.com/security/notices/USN-2912-1
https://www.libssh2.org/adv_20160223.html
https://www.libssh.org/2016/02/23/libssh-0-7-3-security-and-bugfix-release/
https://www.libssh.org/security/advisories/CVE-2016-0739.txt
http://www.debian.org/security/2016/dsa-3488
http://www.ubuntu.com/usn/USN-2912-1
1305971 https://bugzilla.redhat.com/show_bug.cgi?id=1305971
815663 https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=815663
cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:a:libssh:libssh:*:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:canonical:ubuntu_linux:15.10:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:22:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:fedoraproject:fedora:23:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:* https://nvd.nist.gov/vuln/search/results?adv_search=true&isCpeNameSearch=true&query=cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
CVE-2016-0739 https://nvd.nist.gov/vuln/detail/CVE-2016-0739
RHSA-2016:0566 https://access.redhat.com/errata/RHSA-2016:0566
USN-2912-1 https://usn.ubuntu.com/2912-1/
No exploits are available.
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:N Found at https://ftp.suse.com/pub/projects/security/yaml/suse-cvss-scores.yaml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: AV:N/AC:M/Au:N/C:P/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-0739
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N Found at https://nvd.nist.gov/vuln/detail/CVE-2016-0739
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.70612
EPSS Score 0.00329
Published At Dec. 17, 2024, midnight
Date Actor Action Source VulnerableCode Version
There are no relevant records.