ID CVE-2019-3861
Summary An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH packets with a padding length value greater than the packet length are parsed. A remote attacker who compromises a SSH server may be able to cause a Denial of Service or read data in the client memory.
References
Vulnerable Configurations
  • cpe:2.3:a:libssh2:libssh2:0.15:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.15:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.16:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.16:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.17:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.17:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.18:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.18:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.0:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.1:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.1:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.1:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.1:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.2:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.2:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.3:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.3:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.4:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.4:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.5:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.5:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.6:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.6:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.7:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.7:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.8:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.8:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.2.9:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.2.9:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.3.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.3.0:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.4.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.4.0:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.4.1:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.4.1:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.4.2:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.4.2:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.4.3:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.4.3:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.5.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.5.0:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.6.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.6.0:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.7.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.7.0:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:1.8.0:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:1.8.0:*:*:*:*:*:*:*
  • cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
    cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*
  • cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
    cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
  • cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
    cpe:2.3:o:opensuse:leap:15.0:*:*:*:*:*:*:*
  • cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
    cpe:2.3:o:opensuse:leap:42.3:*:*:*:*:*:*:*
CVSS
Base: 6.4 (as of 15-04-2019 - 12:31)
Impact:
Exploitability:
CWE CWE-125
CAPEC
  • Infiltration of Hardware Development Environment
    An attacker, leveraging the ability to manipulate components of primary support systems and tools within the development and production environments, inserts malicious software within the hardware and/or firmware development environment. The infiltration purpose is to alter developed hardware components in a system destined for deployment at the victim's organization, for the purpose of disruption or further compromise.
  • Overread Buffers
    An adversary attacks a target by providing input that causes an application to read beyond the boundary of a defined buffer. This typically occurs when a value influencing where to start or stop reading is set to reflect positions outside of the valid memory location of the buffer. This type of attack may result in exposure of sensitive information, a system crash, or arbitrary code execution.
Access
VectorComplexityAuthentication
NETWORK LOW NONE
Impact
ConfidentialityIntegrityAvailability
PARTIAL NONE PARTIAL
cvss-vector via4 AV:N/AC:L/Au:N/C:P/I:N/A:P
redhat via4
advisories
bugzilla
id 1687311
title CVE-2019-3861 libssh2: Out-of-bounds reads with specially crafted SSH packets
oval
OR
  • comment Red Hat Enterprise Linux must be installed
    oval oval:com.redhat.rhba:tst:20070304026
  • AND
    • comment Red Hat Enterprise Linux 7 is installed
      oval oval:com.redhat.rhba:tst:20150364027
    • OR
      • AND
        • comment libssh2 is earlier than 0:1.8.0-3.el7
          oval oval:com.redhat.rhsa:tst:20192136001
        • comment libssh2 is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152140002
      • AND
        • comment libssh2-devel is earlier than 0:1.8.0-3.el7
          oval oval:com.redhat.rhsa:tst:20192136003
        • comment libssh2-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152140004
      • AND
        • comment libssh2-docs is earlier than 0:1.8.0-3.el7
          oval oval:com.redhat.rhsa:tst:20192136005
        • comment libssh2-docs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152140006
rhsa
id RHSA-2019:2136
released 2019-08-06
severity Moderate
title RHSA-2019:2136: libssh2 security, bug fix, and enhancement update (Moderate)
rpms
  • libssh2-0:1.8.0-3.el7
  • libssh2-debuginfo-0:1.8.0-3.el7
  • libssh2-devel-0:1.8.0-3.el7
  • libssh2-docs-0:1.8.0-3.el7
refmap via4
bugtraq 20190415 [SECURITY] [DSA 4431-1] libssh2 security update
confirm
debian DSA-4431
fedora FEDORA-2019-3348cb4934
misc
mlist [debian-lts-announce] 20190326 [SECURITY] [DLA 1730-1] libssh2 security update
suse
  • openSUSE-SU-2019:1075
  • openSUSE-SU-2019:1109
Last major update 15-04-2019 - 12:31
Published 25-03-2019 - 19:29
Last modified 15-04-2019 - 12:31
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