#VU17271 Use-after-free in libical - CVE-2016-9584

Vulnerability identifier: #VU17271

Vulnerability risk: Low

CVSSv4.0: 1.2 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2016-9584

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

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

Vendor: libical

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error when processing a specially crafted ics files. A remote attackers can cause a denial of service (use-after-free) and possibly read heap memory.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation
Install update from vendor's website.

Vulnerable software versions

libical: 0.47 - 1.0.0

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External links
https://www.openwall.com/lists/oss-security/2016/12/15/5
https://www.securityfocus.com/bid/94948

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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.