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centosCentOS ProjectCESA-2017:1860
HistoryAug 24, 2017 - 1:39 a.m.

libtasn1 security update

2017-08-2401:39:20
CentOS Project
lists.centos.org
107

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

EPSS

0.924

Percentile

99.0%

CentOS Errata and Security Advisory CESA-2017:1860

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.

Merged security bulletin from advisories:
https://lists.centos.org/pipermail/centos-cr-announce/2017-August/030592.html

Affected packages:
libtasn1
libtasn1-devel
libtasn1-tools

Upstream details at:
https://access.redhat.com/errata/RHSA-2017:1860

CVSS2

10

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

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

EPSS

0.924

Percentile

99.0%