CIS CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2015-075

DATE(S) ISSUED:
07/08/2015

SUBJECT:
Multiple Vulnerabilities in Adobe Flash Player Could Allow Remote Code Execution (APSB15-16)

OVERVIEW:

Multiple vulnerabilities have been discovered in Adobe Flash Player, a widely distributed multimedia and application player used to enhance the user experience when visiting web pages or reading email messages. Successful exploitation of these vulnerabilities could result in an attacker compromising data security, potentially allowing access to confidential data, or could compromise processing resources in a user's computer.

THREAT INTELLIGENCE

Proof of concept code is publicly available for CVE-2015-5119, a use-after-free vulnerability that could lead to remote code execution. There are reports of this vulnerability being exploited in the wild, specifically by the Angler Exploit Kit and Nuclear Exploit Pack.

SYSTEM AFFECTED:

  • Adobe Flash Player prior to version 18.0.0.203
  • Adobe Flash Player Extended Support Release prior to version 13.0.0.302
  • Adobe Flash Player for Linux prior to version 11.2.202.481
  • Adobe Flash Player for Google Chrome prior to version 18.0.0.203 for Windows and Macintosh
  • Adobe Flash Player for Google Chrome prior to version 18.0.0.204 for Linux
  • Adobe Flash Player for Internet Explorer 10 and 11 prior to version 18.0.0.203
  • Adobe AIR Desktop Runtime prior to version 18.0.0.180 for Macintosh
  • Adobe AIR SDK and SDK & Compiler prior to version 18.0.0.80

RISK:

Government:

  • Large and medium government entities: High
  • Small government entities: High

Businesses:

  • Large and medium business entities: High
  • Small business entities: High

Home users: High

TECHNICAL SUMMARY:

Adobe Flash Player is prone to multiple vulnerabilities. These vulnerabilities are as follows:

  • Heap buffer overflow vulnerability that could lead to code execution (CVE-2015-3135, CVE-2015-4432, CVE-2015-5118)
  • Memory corruption vulnerability that could lead to code execution (CVE-2015-3117, CVE-2015-3123, CVE-2015-3130, CVE-2015-3133, CVE-2015-3134, CVE-2015-4431)
  • Type confusion vulnerability that could lead to code execution (CVE-2015-3119, CVE-2015-3120, CVE-2015-3121, CVE-2015-3122, CVE-2015-4433)
  • Use-after-free vulnerabilities that could lead to code execution (CVE-2015-3118, CVE-2015-3124, CVE-2015-5117, CVE-2015-3127, CVE-2015-3128, CVE-2015-3129, CVE-2015-3131, CVE-2015-3132, CVE-2015-3136, CVE-2015-3137, CVE-2015-4428, CVE-2015-4430, CVE-2015-5119) Updates MS-ISAC Advisory 2015-074
  • Security bypass vulnerability that could lead to information disclosure (CVE-2015-3114)
  • Multiple vulnerabilities that could be exploited to bypass the same-origin-policy and lead to information disclosure (CVE-2014-0578, CVE-2015-3115, CVE-2015-3116, CVE-2015-3125, CVE-2015-5116)
  • These updates improve memory address randomization of Flash heap for Windows 7 64-bit (CVE-2015-3097)
  • These updates resolve null pointer dereference issues (CVE-2015-3126, CVE-2015-4429)
  • Successful exploitation of these vulnerabilities could result in an attacker compromising data security, potentially allowing access to confidential data, or could compromise processing resources in a user's computer.

RECOMMENDATIONS:

We recommend the following actions be taken:

  • Install the updates provided by Adobe immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments, especially those from un-trusted sources.

REFERENCES:

Adobe:

https://helpx.adobe.com/security/products/flash-player/apsb15-16.html

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0578

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3097

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3114

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3115

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3116

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3117

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3118

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3119

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3120

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3121

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3122

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3123

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3124

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3125

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3126

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3127

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3128

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3129

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3130

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3131

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3132

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3133

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3134

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3135

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3136

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3137

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4428

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4429

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4430

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4431

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4432

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-4433

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5117

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5118

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-5119

Trend Micro:

http://blog.trendmicro.com/trendlabs-security-intelligence/hacking-team-flash-zero-day-integrated-into-exploit-kits/