SB2015021001 - Multiple vulnerabilities in Microsoft Internet Explorer

Security Bulletin ID SB2015021001

CSH Severity

Critical

Patch available

YES

Number of vulnerabilities 40

Exploitation vector Remote access

Highest impact Code execution

Breakdown by Severity

Low
Medium
High
Critical

Description

This security bulletin contains information about 40 vulnerabilities.

1) Privilege escalation (CVE-ID: CVE-2015-0055)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper validation of permissions. A remote attacker can create a specially crafted Web site, trick the victim into visiting it and run scripts with elevated privileges.

Successful exploitation of this vulnerability results in privilege escalation on the vulnerable system.

2) Privilege escalation (CVE-ID: CVE-2015-0054)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerability allows a remote attacker to gain elevated privileges on the target system.

The vulnerability exists due to improper validation of permissions. A remote attacker can create a specially crafted Web site, trick the victim into visiting it and run scripts with elevated privileges.

Successful exploitation of this vulnerability results in privilege escalation on the vulnerable system.

3) Security bypass (CVE-ID: CVE-2015-0071)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Red

The vulnerabiity allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to failure to use Address Space Layout Randomization (ASLR). A remote attacker can create a specially crafted Web site, trick the victim into visiting it, bypass ASLR mechanism and predict memory locations that if connected with another vulnerability allows to execute arbitrary code.

Successful exploitation of this vulnerability results in security bypass on the vulnerable system.

Note: the vulnerability was being actively exploited.

4) Cross-site scripting (CVE-ID: CVE-2015-0070)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear

The vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-input. A remote attacker can trick the victim to follow a specially crafted link and execute arbitrary HTML and script code in user’s browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

5) Security bypass (CVE-ID: CVE-2015-0069)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerabiity allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to failure to use Address Space Layout Randomization (ASLR). A remote attacker can create a specially crafted Web site, trick the victim into visiting it, bypass ASLR mechanism and predict memory locations that if connected with another vulnerability allows to execute arbitrary code.

Successful exploitation of this vulnerability results in security bypass on the vulnerable system.

6) Security bypass (CVE-ID: CVE-2015-0051)

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green

The vulnerabiity allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to failure to use Address Space Layout Randomization (ASLR). A remote attacker can create a specially crafted Web site, trick the victim into visiting it, bypass ASLR mechanism and predict memory locations that if connected with another vulnerability allows to execute arbitrary code.

Successful exploitation of this vulnerability results in security bypass on the vulnerable system.

7) Memory corruption (CVE-ID: CVE-2015-0067)

CWE-ID: CWE-119 - Memory corruption

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to boundary error. A remote attacker can create a specially crafted Web site, trick the victim into visiting it, trigger memory corruption and execute arbitrary code with privileges of the current user.