#VU7568 Heap-based buffer overflow in icu - CVE-2017-7867

Vulnerability identifier: #VU7568

Vulnerability risk: High

CVSSv4.0: 6.1 [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]

CVE-ID: CVE-2017-7867

CWE-ID: CWE-122

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
icu
Universal components / Libraries / Libraries used by multiple products

Vendor: ICU - International Components for Unicode

Description

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

The vulnerability exists due to boundary error in utf8TextAccess() function in common/utext.cpp and the utext_moveIndex32* function in International Components for Unicode (ICU) for C/C++ before 2017-02-13. A remote unauthenticated attacker can trigger heap-based buffer 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

icu: 49.1 - 60.2

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Q & A

Can this vulnerability be exploited remotely?

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

Is there known malware, which exploits this vulnerability?

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