Multiple vulnerabilities in Microsoft Outlook

1) Buffer overflow

EUVDB-ID: #VU20265

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-1199

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

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

CPE2.3

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 a file.

Is there known malware, which exploits this vulnerability?

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

2) Buffer overflow

EUVDB-ID: #VU20266

Risk: High

CVSSv4.0: 5.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2019-1200

CWE-ID: CWE-119 - Memory corruption

Exploit availability: No

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 - 2016

Microsoft Office: 365 ProPlus - 2019

CPE2.3

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 a file.

Is there known malware, which exploits this vulnerability?

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

3) Input validation error

EUVDB-ID: #VU20267

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-1204

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

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 - 2016

Microsoft Office: 365 ProPlus - 2019

CPE2.3

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 a file.

Is there known malware, which exploits this vulnerability?

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

Risk	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 Client/Desktop applications / Office applications Microsoft Outlook Client/Desktop applications / Office applications
Vendor	Microsoft