ID CVE-2019-3862
Summary An out of bounds read flaw was discovered in libssh2 before 1.8.1 in the way SSH_MSG_CHANNEL_REQUEST packets with an exit status message and no payload 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:libssh2:0.1:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.1:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.3:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.3:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.5:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.5:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.6:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.6:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.7:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.7:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.8:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.8:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.10:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.10:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.11:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.11:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.12:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.12:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.13:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.13:*:*:*:*:*:*:*
  • cpe:2.3:a:libssh2:libssh2:0.14:*:*:*:*:*:*:*
    cpe:2.3:a:libssh2:libssh2:0.14:*:*:*:*:*:*:*
  • 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:fedoraproject:fedora:29:*:*:*:*:*:*:*
    cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:*
  • 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: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 1687312
title CVE-2019-3862 libssh2: Out-of-bounds memory comparison with specially crafted message channel request
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 0:1.4.3-12.el7_6.3
          oval oval:com.redhat.rhsa:tst:20191884001
        • comment libssh2 is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152140002
      • AND
        • comment libssh2-devel is earlier than 0:1.4.3-12.el7_6.3
          oval oval:com.redhat.rhsa:tst:20191884003
        • comment libssh2-devel is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152140004
      • AND
        • comment libssh2-docs is earlier than 0:1.4.3-12.el7_6.3
          oval oval:com.redhat.rhsa:tst:20191884005
        • comment libssh2-docs is signed with Red Hat redhatrelease2 key
          oval oval:com.redhat.rhsa:tst:20152140006
rhsa
id RHSA-2019:1884
released 2019-07-29
severity Moderate
title RHSA-2019:1884: libssh2 security update (Moderate)
rpms
  • libssh2-0:1.4.3-12.el7_6.3
  • libssh2-debuginfo-0:1.4.3-12.el7_6.3
  • libssh2-devel-0:1.4.3-12.el7_6.3
  • libssh2-docs-0:1.4.3-12.el7_6.3
refmap via4
bid 107485
bugtraq
  • 20190319 [slackware-security] libssh2 (SSA:2019-077-01)
  • 20190415 [SECURITY] [DSA 4431-1] libssh2 security update
confirm
debian DSA-4431
fedora
  • FEDORA-2019-3348cb4934
  • FEDORA-2019-f31c14682f
misc
mlist
  • [debian-lts-announce] 20190326 [SECURITY] [DLA 1730-1] libssh2 security update
  • [oss-security] 20190318 [SECURITY ADVISORIES] libssh2
suse
  • openSUSE-SU-2019:1075
  • openSUSE-SU-2019:1109
Last major update 15-04-2019 - 12:31
Published 21-03-2019 - 16:01
Last modified 15-04-2019 - 12:31
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