Detections
Analytics
RHEL 6 : libtasn1 (RHSA-2014:0596)
critical Nessus Plugin ID 74303
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Synopsis
The remote Red Hat host is missing one or more security updates for libtasn1.Description
The remote Redhat Enterprise Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2014:0596 advisory.The libtasn1 library provides Abstract Syntax Notation One (ASN.1) parsing and structures management, and Distinguished Encoding Rules (DER) encoding and decoding functions.
It was discovered that the asn1_get_bit_der() function of the libtasn1 library incorrectly reported the length of ASN.1-encoded data. Specially crafted ASN.1 input could cause an application using libtasn1 to perform an out-of-bounds access operation, causing the application to crash or, possibly, execute arbitrary code. (CVE-2014-3468)
Multiple incorrect buffer boundary check issues were discovered in libtasn1. Specially crafted ASN.1 input could cause an application using libtasn1 to crash. (CVE-2014-3467)
Multiple NULL pointer dereference flaws were found in libtasn1's asn1_read_value() function. Specially crafted ASN.1 input could cause an application using libtasn1 to crash, if the application used the aforementioned function in a certain way. (CVE-2014-3469)
Red Hat would like to thank GnuTLS upstream for reporting these issues.
All libtasn1 users are advised to upgrade to these updated packages, which correct these issues. For the update to take effect, all applications linked to the libtasn1 library must be restarted.
Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.
Solution
Update the RHEL libtasn1 package based on the guidance in RHSA-2014:0596.See Also
http://www.nessus.org/u?fe80347d
https://access.redhat.com/errata/RHSA-2014:0596
https://access.redhat.com/security/updates/classification/#moderate
https://bugzilla.redhat.com/show_bug.cgi?id=1102022
Plugin Details
Severity: Critical
ID: 74303
File Name: redhat-RHSA-2014-0596.nasl
Version: 1.14
Type: local
Agent: unix
Family: Red Hat Local Security Checks
Published: 6/4/2014
Updated: 11/4/2024
Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus
Risk Information
VPR
Risk Factor: Medium
Score: 5.9
Vendor
Vendor Severity: Moderate
CVSS v2
Risk Factor: High
Base Score: 7.5
Temporal Score: 5.5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS Score Source: CVE-2014-3468
CVSS v3
Risk Factor: Critical
Base Score: 9.8
Temporal Score: 8.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C
CVSS Score Source: CVE-2014-3469
Vulnerability Information
CPE: p-cpe:/a:redhat:enterprise_linux:libtasn1-tools, p-cpe:/a:redhat:enterprise_linux:libtasn1, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:libtasn1-devel
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: 6/3/2014
Vulnerability Publication Date: 6/5/2014