RHEL 7 : libssh2 (RHSA-2019:0679)

High Nessus Plugin ID 123486

New! Vulnerability Priority Rating (VPR)

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VPR Score: 6.7

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

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 impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

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.

Solution

Update the affected packages.

See Also

https://access.redhat.com/errata/RHSA-2019:0679

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

Plugin Details

Severity: High

ID: 123486

File Name: redhat-RHSA-2019-0679.nasl

Version: 1.5

Type: local

Agent: unix

Published: 2019/03/29

Updated: 2020/01/27

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 6.7

CVSS v2.0

Base Score: 9.3

Temporal Score: 6.9

Vector: CVSS2#AV:N/AC:M/Au:N/C:C/I:C/A:C

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 8.8

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libssh2, p-cpe:/a:redhat:enterprise_linux:libssh2-debuginfo, p-cpe:/a:redhat:enterprise_linux:libssh2-devel, p-cpe:/a:redhat:enterprise_linux:libssh2-docs, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.6

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/cpu

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/03/28

Vulnerability Publication Date: 2019/03/21

Reference Information

CVE: CVE-2019-3855, CVE-2019-3856, CVE-2019-3857, CVE-2019-3863

RHSA: 2019:0679