#VU13053 Out-of-bounds read in icu - CVE-2016-6293

Vulnerability identifier: #VU13053

Vulnerability risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-6293

CWE-ID: CWE-125

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 cause DoS condition on the target system.

The vulnerability exists due to the uloc_acceptLanguageFromHTTP function in common/uloc.cpp for C/C++ does not ensure that there is a '' character at the end of a certain temporary array. A remote unauthenticated attacker can supply a call with a long httpAcceptLanguage argument, trigger out-of-bounds read and cause the service to crash.

Mitigation
Update to version 57.1.

Vulnerable software versions

icu: 49.1 - 56.1

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External links
https://git.php.net/?p=php-src.git;a=commit;h=aa82e99ed8003c01f1ef4f0940e56b85c5b032d4

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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.