Oracle Linux 7 : libtasn1 (ELSA-2017-1860)

This script is Copyright (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Oracle Linux host is missing one or more security updates.

Description :

From Red Hat Security Advisory 2017:1860 :

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.

See also :

https://oss.oracle.com/pipermail/el-errata/2017-August/007077.html

Solution :

Update the affected libtasn1 packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Oracle Linux Local Security Checks

Nessus Plugin ID: 102285 ()

Bugtraq ID:

CVE ID: CVE-2015-2806
CVE-2015-3622

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