Multiple vulnerabilities in Microsoft Outlook

Published: 2019-08-14 | Updated: 2019-08-14
Severity High
Patch available YES
Number of vulnerabilities 3
CVE ID CVE-2019-1199
CVE-2019-1200
CVE-2019-1204
CWE ID CWE-119
CWE-20
Exploitation vector Network
Public exploit N/A
Vulnerable software Microsoft Office Subscribe
Microsoft Outlook
Vendor Microsoft

Security Advisory

1) Buffer overflow

Severity: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1199

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Outlook. Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Outlook software.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Office: 365 ProPlus, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1199

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open an attachment in an e-mail message.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Buffer overflow

Severity: High

CVSSv3: 7.7 [CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1200

CWE-ID: CWE-119 - Improper Restriction of Operations within the Bounds of a Memory Buffer

Description

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

The vulnerability exists due to insufficient validation of user-supplied input when the software fails to properly handle objects in memory in Microsoft Outlook. Successful exploitation of the vulnerability allows remote code execution but requires that a user open a specially crafted file with an affected version of Microsoft Outlook software.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Microsoft Outlook: 2010 Service Pack 2, 2013 RT Service Pack 1, 2013 Service Pack 1, 2016

Microsoft Office: 365 ProPlus, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1200

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open an attachment in an e-mail message.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Input validation error

Severity: Medium

CVSSv3: 5.6 [CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N/E:U/RL:O/RC:C] [PCI]

CVE-ID: CVE-2019-1204

CWE-ID: CWE-20 - Improper Input Validation

Description

The vulnerability allows a remote attacker to escalate privileges on the system.

The vulnerability exists due to insufficient validation of incoming email messages. A remote attacker can create a specially crafted email message and attempt to force Outlook to load a local or remote message store (over SMB).

Mitigation

Install update from vendor's website.

Vulnerable software versions

Microsoft Outlook: 2010 Service Pack 2, 2013 RT Service Pack 1, 2013 Service Pack 1, 2016

Microsoft Office: 365 ProPlus, 2019

CPE External links

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2019-1204

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

How the attacker can exploit this vulnerability?

The attacker would have to trick the victim to visit a specially crafted website or open an attachment in an e-mail message.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.