Explore top 10 tips to secure your open-source projects now. Read More

×
Alerts This Week
Warning Icon 1 428
Alerts This Week
Warning Icon 1 428

Red Hat: RHSA-2019-2399-01 Important: Libssh2 Integer Overflow Issues

red hat
Calendar Grey August 7, 2019
Dist Redhat Esm H88
Red Hat has issued a security advisory highlighting a significant update for libssh2, focusing on the resolution of out-of-bounds vulnerabilities and integer overflow concerns.
An update for libssh2 is now available for Red Hat Enterprise Linux 7.3 Advanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended Update Support, and Red Hat Enterprise ...

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 important integer overflow redhat out of bounds ssh protocol 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 Server AUS (v. 7.3):
Source: libssh2-1.4.3-11.el7_3.1.src.rpm
x86_64: libssh2-1.4.3-11.el7_3.1.i686.rpm libssh2-1.4.3-11.el7_3.1.x86_64.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.i686.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.x86_64.rpm
Red Hat Enterprise Linux Server E4S (v. 7.3):
Source: libssh2-1.4.3-11.el7_3.1.src.rpm
ppc64le: libssh2-1.4.3-11.el7_3.1.ppc64le.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.ppc64le.rpm
x86_64: libssh2-1.4.3-11.el7_3.1.i686.rpm libssh2-1.4.3-11.el7_3.1.x86_64.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.i686.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.x86_64.rpm
Red Hat Enterprise Linux Server TUS (v. 7.3):
Source: libssh2-1.4.3-11.el7_3.1.src.rpm
x86_64: libssh2-1.4.3-11.el7_3.1.i686.rpm libssh2-1.4.3-11.el7_3.1.x86_64.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.i686.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional AUS (v. 7.3):
noarch: libssh2-docs-1.4.3-11.el7_3.1.noarch.rpm
x86_64: libssh2-debuginfo-1.4.3-11.el7_3.1.i686.rpm libssh2-debuginfo-1.4.3-11.el7_3.1.x86_64.rpm libssh2-devel-1.4.3-11.el7_3.1.i686.rpm libssh2-devel-1.4.3-11.el7_3.1.x86_64.rpm
Red Hat Enterprise Linux Server Optional E4S (v. 7.3):
noarch: libssh2-docs-1.4.3-11.el7_3.1.noarch.rpm
ppc64le: libssh2-debuginfo-1.4.3-11.el7_3.1.ppc64le.rpm

Read the Full Advisory


Severity
important
Lowest
Low
Medium
High
Critical

Advisory ID: RHSA-2019:2399-01
Product: Red Hat Enterprise Linux
Advisory URL: https://access.redhat.com/errata/RHSA-2019:2399
Issue date: 2019-08-07

Topic

An update for libssh2 is now available for Red Hat Enterprise Linux 7.3Advanced Update Support, Red Hat Enterprise Linux 7.3 Telco Extended UpdateSupport, and Red Hat Enterprise Linux 7.3 Update Services for SAPSolutions.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 important integer overflow redhat out of bounds ssh protocol libssh2

Relevant Releases Architectures

Red Hat Enterprise Linux Server AUS (v. 7.3) - x86_64

Red Hat Enterprise Linux Server E4S (v. 7.3) - ppc64le, x86_64

Red Hat Enterprise Linux Server Optional AUS (v. 7.3) - noarch, x86_64

Red Hat Enterprise Linux Server Optional E4S (v. 7.3) - noarch, ppc64le, x86_64

Red Hat Enterprise Linux Server Optional TUS (v. 7.3) - noarch, x86_64

Red Hat Enterprise Linux Server TUS (v. 7.3) - x86_64

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

Get the latest News and Insights

Get the latest Linux and open source security news straight to your inbox.