#VU13054 Double free memory error in icu - CVE-2017-14952

Vulnerability identifier: #VU13054

Vulnerability risk: High

CVSSv4.0: 8.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-14952

CWE-ID: CWE-415

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 double free memory error in i18n/zonemeta.cpp in International Components for Unicode (ICU) for C/C++. A remote unauthenticated attacker can supply a ca specially crafted string, aka a "redundant UVector entry clean up function call" issue, trigger memory corruption and execute arbitrary code with elevated privileges.

Successful exploitation of the vulnerability may result in system compromise.

Mitigation
Update to version 59.1.

Vulnerable software versions

icu: 49.1 - 58.2

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External links
https://bugs.icu-project.org/trac/changeset/40324/trunk/icu4c/source/i18n/zonemeta.cpp

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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.