MS-ISAC CYBERSECURITY ADVISORIES

MS-ISAC ADVISORY NUMBER:
2017-003

DATE(S) ISSUED:
01/10/2017

SUBJECT:
Multiple Vulnerabilities in Adobe Acrobat and Adobe Reader Could Allow for Code Execution (APSB17-01)

OVERVIEW:

Multiple vulnerabilities have been discovered in Adobe Acrobat and Adobe Reader, the most severe of which could allow for code execution. Adobe Acrobat and Reader allow a user to view, create, manipulate, print and manage files in Portable Document Format (PDF). Successful exploitation of the most severe of these vulnerabilities could result in the attacker gaining control of the affected system.

THREAT INTELLIGENCE:

There are currently no reports of these vulnerabilities being exploited in the wild.

SYSTEM AFFECTED:

• Adobe Acrobat DC versions 15.020.20042 and prior for Windows and Macintosh

• Acrobat Reader DC versions 15.020.20042 and prior for Windows and Macintosh

• Acrobat DC versions 15.006.3044 and prior for Windows and Macintosh

• Adobe Acrobat Reader DC versions 15.006.3044 and prior for Windows and Macintosh

• Adobe Acrobat XI versions 11.0.18 and prior for Windows and Macintosh

• Adobe Reader XI versions 11.0.18 and prior for Windows and Macintosh

RISK:

Government:

• Large and medium government entities: High

• Small government entities: Medium

Businesses:

• Large and medium business entities: High

• Small business entities: Medium

Home users: Low

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Adobe Acrobat and Adobe Reader, the most severe of which could allow for code execution. The vulnerabilities are as follows:

· One type confusion vulnerability that could lead to code execution (CVE-2017-2962).

· Seven use-after-free vulnerabilities that could lead to code execution (CVE-2017-2950, CVE-2017-2951, CVE-2017-2955, CVE-2017-2956, CVE-2017-2957, CVE-2017-2958, CVE-2017-2961).

· Six heap buffer overflow vulnerabilities that could lead to code execution (CVE-2017-2942, CVE-2017-2945, CVE-2017-2946, CVE-2017-2949, CVE-2017-2959, CVE-2017-2966).

· Two buffer overflow vulnerabilities that could lead to code execution (CVE-2017-2948, CVE-2017-2952).

· Twelve memory corruption vulnerabilities that could lead to code execution (CVE-2017-2939, CVE-2017-2940, CVE-2017-2941, CVE-2017-2943, CVE-2017-2944, CVE-2017-2953, CVE-2017-2954, CVE-2017-2960, CVE-2017-2963, CVE-2017-2964, CVE-2017-2965, CVE-2017-2967).

· One security bypass vulnerability (CVE-2017-2947).

Successful exploitation of the most severe of these vulnerabilities could result in the attacker gaining control of the affected system.

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 websites or follow links provided by unknown or untrusted sources.

• Inform and educate users regarding the threats posed by hypertext links contained in emails or attachments especially from untrusted sources.

• Apply the Principle of Least Privilege to all systems and services.

REFERENCES:

Adobe:

https://helpx.adobe.com/security/products/acrobat/apsb17-01.html

CVE:

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2939

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2940

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2941

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2942

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2943

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2944

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2945

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2946

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2947

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2948

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2949

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2950

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2951

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2952

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2953

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2954

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2955

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2956

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2957

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2958

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2959

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2960

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2961

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2962

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2963

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2964

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2965

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2966

http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2967