Vulnerability identifier: #VU6111

Vulnerability risk: High

CVSSv3.1: 8.3 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2010-3855

CWE-ID: CWE-120

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Apple iOS
Operating systems & Components / Operating system

Vendor: Apple Inc.

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

The vulnerability exists due to buffer overflow when handling of TrueType fonts by FreeType. A remote attacker can send a specially crafted PDF file, trick the victim into opening it, trigger memory corruption and execute arbitrary code with privileges of the current user.

Successful exploitation of the vulnerability results in compromise of vulnerable system.

Mitigation
Update iOS to version 4.3.4.

Vulnerable software versions

Apple iOS: 4.3.0 - 4.3.4, 4.2.1 - 4.2.8, 4.0 - 4.0.2, 3.2 - 3.2.2, 3.1 - 3.1.3, 3.0 - 3.0.1

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External links
http://support.apple.com/en-us/HT202272

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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.