Ubuntu update for ICU

1) Double free memory error

EUVDB-ID: #VU13054

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 - Double Free

Exploit availability: No

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 the affected packages

Ubuntu 17.10:

libicu57 57.1-6ubuntu0.2

Ubuntu 17.04:

libicu57 57.1-5ubuntu0.2

Ubuntu 16.04 LTS:

libicu55 55.1-7ubuntu0.3

Ubuntu 14.04 LTS:

libicu52 52.1-3ubuntu0.7

Vulnerable software versions

Ubuntu: 14.04 - 17.10

CPE2.3

• cpe:2.3:o:canonical:ubuntu:14.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:16.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:17.04:*:*:*:*:*:*:*
• cpe:2.3:o:canonical:ubuntu:17.10:*:*:*:*:*:*:*

External links

https://www.ubuntu.com/usn/usn-3458-1/

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.