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[R2] Nessus 6.10 Fixes Multiple Third-party Library Vulnerabilities

Critical

Synopsis

Nessus 6.9.0 - 6.9.3 is possibly impacted by multiple vulnerabilities reported in OpenSSL. Tenable has not investigated each one to determine if it is exploitable or the vulnerable code path can be reached. Instead, Dev has upgraded the impacted libraries as a faster and safer alternative. Due to the possibility of impacting Nessus users, we strongly encourage you to upgrade.

The following vulnerabilities have been resolved with the updated libraries.

  • OpenSSL crypto/bn/asm/x86_64-mont5.pl Montgomery Squaring Procedure BN_mod_exp Incorrect Results Private Key Derivation Weakness (CVE-2017-3732)
  • OpenSSL crypto/evp/e_chacha20_poly1305.c CHACHA20-POLY1305 Cipher Packet Handling Out-of-bounds Read Remote DoS (2017-3731)
  • OpenSSL crypto/bn/asm/x86_64-mont.pl Montgomery Multiplication Incorrect Results Weakness (CVE-2016-7055)

Nessus 6.5.0 - 6.9.3 is possibly impacted by multiple vulnerabilities reported in Libxml2. Tenable has not investigated each one to determine if it is exploitable or the vulnerable code path can be reached. Instead, Dev has upgraded the impacted libraries as a faster and safer alternative. Due to the number of library issues and the potential for any of these issues to impact Nessus users, we strongly encourage you to upgrade. Note that two of these issues do not have CVE assignments.

  • Libxml2 parser.c XML Handling Unspecified Issue (CVE-2015-7499)
  • Libxml2 parser.c Entity Boundary Handling Unspecified Memory Access Issue (CVE-2015-7500)
  • Libxml2 dict.c xmlDictComputeFastQKey() Function Heap Buffer Overflow (CVE-2015-7497)
  • Libxml2 parser.c Unspecified XML External Entity (XXE) Injection Issue (CVE-2015-5312)
  • Libxml2 Encoding Conversion Failure Entity Processing Unspecified Issue (CVE-2015-7498)
  • Libxml2 xzlib.c xz_decomp() Function Infinite Loop DoS Weakness (CVE-2015-8035)
  • Libxml2 SAX2.c xmlSAX2TextNode() Function Out-of-bounds Read Issue (CVE-2015-8242)
  • Libxml2 parser.c xmlParseMarkupDecl() Function Out-of-bounds Read Issue (CVE-2015-8241)
  • Libxml2 parser.c xmlParseEncodingDecl() Function Encoding Value Handling Out-of-bounds Read Issue (CVE-2015-8317)
  • Libxml2 parser.c xmlParseEncodingDecl() Function Input Stream Conversion Handling Out-of-bounds Read Issue (CVE-2015-8317)
  • Libxml2 XML External Entity (XXE) Expansion Resource Exhaustion Remote DoS (CVE-2015-1819)
  • Libxml2 parser.c xmlParseConditionalSections() Function Out-of-bounds Read Issue (CVE-2015-7941 / CVE-2015-7942)
  • Libxml2 Multiple Functionality Format Strings (CVE-2016-4448)
  • Libxml2 parser.c xmlParseElementDecl() / xmlParseConditionalSections() Functions Out-of-bounds Read Issue (CVE-2016-4447)
  • Libxml2 parser.c xmlStringLenDecodeEntities() Function Unspecified XML External Entity (XXE) Injection Issue (CVE-2016-4449)
  • Libxml2 xmlregexp.c xmlFAParseCharRange() Function Heap Buffer Overflow (CVE-2016-1840)
  • Libxml2 parser.c xmlParseStartTag2() Function Heap Use-after-free (CVE-2016-1835)
  • Libxml2 xmlstring.c xmlStrncatNew() Function Heap Buffer Overflow (CVE-2016-1834)
  • Libxml2 parser.c xmlParseNCNameComplex() Function Heap Use-after-free (CVE-2016-1836)
  • Libxml2 HTMLparser.c htmlParseSystemLiteral() / htmlParsePubidLiteral() Functions Heap Buffer Overflow (CVE-2016-1837)
  • Libxml2 xmlsave.c xmlBufAttrSerializeTxtContent() Function Recover Mode XML Content Handling Out-of-bounds Read Issue (CVE-2016-4483)
  • Libxml2 parser.c Multiple Function Recursive xmlStringDecodeEntities() Call Handling Stack Overflow DoS (CVE-2016-3705)
  • Libxml2 HTMLparser.c htmlParseName() / htmlParseNameComplex() Functions Out-of-bounds Read Issue (CVE-2016-1839)
  • Libxml2 parser.c xmlParserEntityCheck() Function Recovery Mode XML Content Parsing Recursion DoS (CVE-2016-3627)
  • Libxml2 parser.c xmlParseEndTag2() Function Out-of-bounds Read Issue (CVE-2016-1838 / CVE-2016-1695)
  • Libxml2 parserInternals.c xmlNextChar() Function Out-of-bounds Read Issue (CVE-2016-1833)
  • Libxml2 uri.c xmlParse3986Port() Function Port Argument Handling Integer Overflow Unspecified Issue
  • Libxml2 HTMLparser.c htmlParseNameComplex() Function HTML File Encoding Detection Failure

Please note that Tenable strongly recommends that Nessus be installed on a subnet that is not Internet addressable.

Solution

Tenable has released Nessus version 6.10 that corresponds to the supported operating systems and architectures. To update your Nessus installation, follow these steps:

This page contains information regarding security vulnerabilities that may impact Tenable's products. This may include issues specific to our software, or due to the use of third-party libraries within our software. Tenable strongly encourages users to ensure that they upgrade or apply relevant patches in a timely manner.

Tenable takes product security very seriously. If you believe you have found a vulnerability in one of our products, we ask that you please work with us to quickly resolve it in order to protect customers. Tenable believes in responding quickly to such reports, maintaining communication with researchers, and providing a solution in short order.

For more details on submitting vulnerability information, please see our Vulnerability Reporting Guidelines page.

If you have questions or corrections about this advisory, please email [email protected]

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