Integer overflow in Dell EMC Unity

1) Integer overflow

EUVDB-ID: #VU26149

Risk: High

CVSSv3.1: 7 [CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2020-10531

CWE-ID: CWE-190 - Integer overflow

Exploit availability: No

Description

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

The vulnerability exists due to integer overflow in UnicodeString::doAppend() function in common/unistr.cpp. A remote attacker can pass specially crafted string to the application that is using the vulnerable library, trigger integer overflow and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install update from vendor's website.

Vulnerable software versions

Dell EMC UnityVSA Operating Environment (OE): before 5.0.4.0.5.012

Dell EMC Unity XT Operating Environment (OE): before 5.0.4.0.5.012

Dell EMC Unity Operating Environment (OE): before 5.0.4.0.5.012

External links

http://www.dell.com/support/kbdoc/en-us/000181247/dsa-2020-275-dell-emc-unity-dell-emc-unity-vsa-and-dell-emc-unity-xt-security-update-for-an-international-components-for-unicode-icu-vulnerability

Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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