RHEL 7 : libtasn1 (RHSA-2017:1860)

critical Nessus Plugin ID 102146

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VPR Score: 5.9

Synopsis

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

Description

An update for libtasn1 is now available for Red Hat Enterprise Linux 7.

Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

Libtasn1 is a library that provides Abstract Syntax Notation One (ASN.1, as specified by the X.680 ITU-T recommendation) parsing and structures management, and Distinguished Encoding Rules (DER, as per X.690) encoding and decoding functions.

The following packages have been upgraded to a later upstream version:
libtasn1 (4.10). (BZ#1360639)

Security Fix(es) :

* A heap-based buffer overflow flaw was found in the way the libtasn1 library decoded certain DER-encoded inputs. A specially crafted DER-encoded input could cause an application using libtasn1 to perform an invalid read, causing the application to crash. (CVE-2015-3622)

* A stack-based buffer overflow was found in the way libtasn1 decoded certain DER encoded data. An attacker could use this flaw to crash an application using the libtasn1 library. (CVE-2015-2806)

Additional Changes :

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.4 Release Notes linked from the References section.

Solution

Update the affected packages.

Plugin Details

Severity: Critical

ID: 102146

File Name: redhat-RHSA-2017-1860.nasl

Version: 3.10

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 8/3/2017

Updated: 10/24/2019

Dependencies: ssh_get_info.nasl

Risk Information

Risk Factor: Critical

VPR Score: 5.9

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

Vector: AV:N/AC:L/Au:N/C:C/I:C/A:C

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:libtasn1, p-cpe:/a:redhat:enterprise_linux:libtasn1-debuginfo, p-cpe:/a:redhat:enterprise_linux:libtasn1-devel, p-cpe:/a:redhat:enterprise_linux:libtasn1-tools, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:7.4, cpe:/o:redhat:enterprise_linux:7.5, cpe:/o:redhat:enterprise_linux:7.6, cpe:/o:redhat:enterprise_linux:7.7

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: 8/1/2017

Vulnerability Publication Date: 4/10/2015

Reference Information

CVE: CVE-2015-2806, CVE-2015-3622

RHSA: 2017:1860