Tenable Nessus up to 6.7.0 Expat XML Parser memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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9.6$0-$5k0.00

Summaryinfo

A vulnerability was found in Tenable Nessus. It has been classified as critical. This issue affects some unknown processing of the component Expat XML Parser. This manipulation causes memory corruption. This vulnerability appears as CVE-2016-0718. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability has been found in Tenable Nessus (Security Testing Software) and classified as very critical. Affected by this vulnerability is an unknown code block of the component Expat XML Parser. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

Expat allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via a malformed input document, which triggers a buffer overflow.

The weakness was presented 07/19/2016 by Gustavo Grieco as TNS-2016-11 / 138680 as confirmed security advisory (Website). The advisory is shared at tenable.com. This vulnerability is known as CVE-2016-0718 since 12/16/2015. The exploitation appears to be easy. The attack can be launched remotely. The requirement for exploitation is a single authentication. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 09/09/2022).

The vulnerability scanner Nessus provides a plugin with the ID 92465 (Tenable Nessus 6.x < 6.8 Multiple Vulnerabilities), which helps to determine the existence of the flaw in a target environment. It is assigned to the family CGI abuses and running in the context r. The commercial vulnerability scanner Qualys is able to test this issue with plugin 168881 (OpenSuSE Security Update for expat (openSUSE-SU-2016:1441-1)).

Upgrading to version 6.8 eliminates this vulnerability. The upgrade is hosted for download at support.tenable.com. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (92465) and SecurityFocus (BID 90729†). See VDB-87628, VDB-89749, VDB-90194 and VDB-90195 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.8
VulDB Meta Temp Score: 9.6

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 92465
Nessus Name: Tenable Nessus 6.x < 6.8 Multiple Vulnerabilities
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

OpenVAS ID: 800495
OpenVAS Name: Apple iTunes Multiple Vulnerabilities-HT207599 (Windows)
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
Exposure Time: 🔍

Upgrade: Nessus 6.8

Timelineinfo

12/16/2015 🔍
05/18/2016 +154 days 🔍
05/26/2016 +8 days 🔍
07/19/2016 +54 days 🔍
07/19/2016 +0 days 🔍
07/20/2016 +1 days 🔍
07/22/2016 +2 days 🔍
09/09/2022 +2240 days 🔍

Sourcesinfo

Advisory: TNS-2016-11 / 138680
Researcher: Gustavo Grieco
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2016-0718 (🔍)
GCVE (CVE): GCVE-0-2016-0718
GCVE (VulDB): GCVE-100-90193

OVAL: 🔍

SecurityFocus: 90729 - Expat CVE-2016-0718 Buffer Overflow Vulnerability
SecurityTracker: 1036348

scip Labs: https://www.scip.ch/en/?labs.20091204
See also: 🔍

Entryinfo

Created: 07/22/2016 19:55
Updated: 09/09/2022 08:19
Changes: 07/22/2016 19:55 (60), 03/07/2019 07:44 (25), 09/09/2022 08:19 (3)
Complete: 🔍
Cache ID: 216:A6E:103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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