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Red Hat Enterprise Linux 7: RHSA-2019-0679:01 Critical libssh2 Integer Flaw

red hat
Calendar Grey March 28, 2019
Dist Redhat Esm H88
Canonical releases a critical update for OpenSSL tackling multiple security vulnerabilities impacting Ubuntu 20.04.
An update for libssh2 is now available for Red Hat Enterprise Linux 7

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

After installing these updated packages, all running applications using libssh2 must be restarted for this update to take effect.

Summary

The libssh2 packages provide a library that implements the SSH2 protocol.
Security Fix(es):
* libssh2: Integer overflow in transport read resulting in out of bounds write (CVE-2019-3855)
* libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write (CVE-2019-3856)
* libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write (CVE-2019-3857)
* libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes (CVE-2019-3863)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Topics%20covered

Topics Covered

security advisory red hat security fix important integer overflow libssh2

References

https://access.redhat.com/security/cve/CVE-2019-3855 https://access.redhat.com/security/cve/CVE-2019-3856 https://access.redhat.com/security/cve/CVE-2019-3857 https://access.redhat.com/security/cve/CVE-2019-3863 https://access.redhat.com/security/updates/classification#important

Package List

Red Hat Enterprise Linux Client (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
x86_64: libssh2-1.4.3-12.el7_6.2.i686.rpm libssh2-1.4.3-12.el7_6.2.x86_64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux Client Optional (v. 7):
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
x86_64: libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm libssh2-devel-1.4.3-12.el7_6.2.i686.rpm libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
x86_64: libssh2-1.4.3-12.el7_6.2.i686.rpm libssh2-1.4.3-12.el7_6.2.x86_64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux ComputeNode Optional (v. 7):
noarch: libssh2-docs-1.4.3-12.el7_6.2.noarch.rpm
x86_64: libssh2-debuginfo-1.4.3-12.el7_6.2.i686.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.x86_64.rpm libssh2-devel-1.4.3-12.el7_6.2.i686.rpm libssh2-devel-1.4.3-12.el7_6.2.x86_64.rpm
Red Hat Enterprise Linux Server (v. 7):
Source: libssh2-1.4.3-12.el7_6.2.src.rpm
ppc64: libssh2-1.4.3-12.el7_6.2.ppc.rpm libssh2-1.4.3-12.el7_6.2.ppc64.rpm libssh2-debuginfo-1.4.3-12.el7_6.2.ppc.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:0679-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:0679
Issue date: 2019-03-28

Topic

An update for libssh2 is now available for Red Hat Enterprise Linux 7.Red Hat Product Security has rated this update as having a security impactof Important. A Common Vulnerability Scoring System (CVSS) base score,which gives a detailed severity rating, is available for each vulnerabilityfrom the CVE link(s) in the References section.

Topics%20covered

Topics Covered

security advisory red hat security fix important integer overflow libssh2

Relevant Releases Architectures

Red Hat Enterprise Linux Client (v. 7) - x86_64

Red Hat Enterprise Linux Client Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux ComputeNode (v. 7) - x86_64

Red Hat Enterprise Linux ComputeNode Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux Server (v. 7) - ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Server Optional (v. 7) - noarch, ppc64, ppc64le, s390x, x86_64

Red Hat Enterprise Linux Workstation (v. 7) - x86_64

Red Hat Enterprise Linux Workstation Optional (v. 7) - noarch, x86_64

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server (v. 7) - aarch64, ppc64le, s390x

Red Hat Enterprise Linux for ARM and IBM Power LE (POWER9) Server Optional (v. 7) - aarch64, noarch, ppc64le, s390x

Bugs Fixed

1687303 - CVE-2019-3855 libssh2: Integer overflow in transport read resulting in out of bounds write

1687304 - CVE-2019-3856 libssh2: Integer overflow in keyboard interactive handling resulting in out of bounds write

1687305 - CVE-2019-3857 libssh2: Integer overflow in SSH packet processing channel resulting in out of bounds write

1687313 - CVE-2019-3863 libssh2: Integer overflow in user authenticate keyboard interactive allows out-of-bounds writes

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