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CVE
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CVE-2019-3856Date: (C)2019-06-19   (M)2019-07-22


An integer overflow flaw, which could lead to an out of bounds write, was discovered in libssh2 before 1.8.1 in the way keyboard prompt requests are parsed. A remote attacker who compromises a SSH server may be able to execute code on the client system when a user connects to the server.

CVSS Score and Metrics +CVSS Score and Metrics -

CVSS V3 Severity:CVSS V2 Severity:
CVSS Score : 8.8CVSS Score : 6.8
Exploit Score: 2.8Exploit Score: 8.6
Impact Score: 5.9Impact Score: 6.4
 
CVSS V3 Metrics:CVSS V2 Metrics:
Attack Vector: NETWORKAccess Vector: NETWORK
Attack Complexity: LOWAccess Complexity: MEDIUM
Privileges Required: NONEAuthentication: NONE
User Interaction: REQUIREDConfidentiality: PARTIAL
Scope: UNCHANGEDIntegrity: PARTIAL
Confidentiality: HIGHAvailability: PARTIAL
Integrity: HIGH 
Availability: HIGH 
  
Reference:
https://seclists.org/bugtraq/2019/Apr/25
DSA-4431
FEDORA-2019-3348cb4934
RHSA-2019:0679
RHSA-2019:1175
RHSA-2019:1652
RHSA-2019:1791
RHSA-2019:1943
RHSA-2019:2399
https://lists.debian.org/debian-lts-announce/2019/03/msg00032.html
https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3856
https://security.netapp.com/advisory/ntap-20190327-0005/
https://www.libssh2.org/CVE-2019-3856.html
openSUSE-SU-2019:1075
openSUSE-SU-2019:1109

CPE    6
cpe:/o:debian:debian_linux:8.0
cpe:/a:libssh2:libssh2:1.6.0
cpe:/a:libssh2:libssh2:1.4.3
cpe:/o:redhat:enterprise_linux_desktop:7.0
...
CWE    1
CWE-190
OVAL    17
oval:org.secpod.oval:def:205182
oval:org.secpod.oval:def:205229
oval:org.secpod.oval:def:1601039
oval:org.secpod.oval:def:502714
...

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