#VU12119 Use-after-free error in LibreOffice - CVE-2018-10119

Vulnerability identifier: #VU12119

Vulnerability risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-10119

CWE-ID: CWE-416

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
LibreOffice
Client/Desktop applications / Office applications

Vendor: LibreOffice

Description
The vulnerability allows a remote attacker to writ arbitrary files and cause DoS condition on the target system.

The weakness exists in sot/source/sdstor/stgstrms.cxx due to using an incorrect integer data type in the StgSmallStrm class. A remote attacker can submit a specially crafted document that uses the structured storage ole2 wrapper file format, trigger use-after-free error with write access and cause the service to crash.

Mitigation
Update to versions 5.4.5.1 or 6.0.1.1 .

Vulnerable software versions

LibreOffice: 5.4.0.1 - 5.4.0.3, 5.4.1.1 - 5.4.1.2, 5.4.2.1 - 5.4.2.2, 5.4.3.1 - 5.4.3.2, 5.4.4.1 - 5.4.4.2, 6.0.0.1 - 6.0.0.3

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External links
https://www.libreoffice.org/about-us/security/advisories/cve-2018-10119/

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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.