Heap-based buffer overflow in libreoffice (Alpine package)

1) Heap-based buffer overflow

EUVDB-ID: #VU6370

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-2016-10327

CWE-ID: CWE-122 - Heap-based Buffer Overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when processing EMF files with bitmap data preceded by a header and a field with in that header which states the offset from the start of the header to the bitmap data. A remote attacker cat embed a malicious EMF file into Office document, trick the victim into opening it, trigger heap-based buffer overflow and execute arbitrary code on the target system.

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

Mitigation

Install update from vendor's website.

Vulnerable software versions

libreoffice (Alpine package): 5.2.3.3-r1

External links

http://git.alpinelinux.org/aports/commit/?id=0c6f4a410898db316a1fd871fe4e73daaa3a3cc1

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.