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veracodeVeracode Vulnerability DatabaseVERACODE:3353
HistoryJan 27, 2017 - 8:21 a.m.

Weak Diffie-Hellman Handshake Due To Truncated Secret Length

2017-01-2708:21:44
Veracode Vulnerability Database
sca.analysiscenter.veracode.com
8

5.9 Medium

CVSS3

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access 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

JSON

libssh2 is vulnerable to weak handshakes. The vulnerability happens because diffie_hellman_sha256 function in kex.c in libssh2 generates secret key of length 128 or 256 bits instead of 1023 or 2047 bits, allowing the attackers to intercept or decrypt SSH sessions using bits/bytes confusion bug.

CPENameOperatorVersion
libssh2eq1.4.3
libssh2-ioseq1.6.0

Related

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prion 1
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openvas 19
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redhat 1
archlinux 2
symantec 1
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oraclelinux 2
mageia 1
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amazon 1
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altlinux 1
suse 2
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5.9 Medium

CVSS3

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

4.3 Medium

CVSS2

Access Vector

NETWORK

Access 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

JSON
Related for VERACODE:3353
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