Improper access control in libreoffice (Alpine package)



Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-9854
CWE-ID CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
 libreoffice (Alpine package)
Operating systems & Components / Operating system package or component

Vendor Alpine Linux Development Team

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Improper access control

EUVDB-ID: #VU20955

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-2019-9854

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to unsafe URL assembly flaw in allowed script location check. A remote authenticated attacker can execute script in arbitrary locations on the filesystem by employing a URL encoding attack to defeat the path verification step.




Mitigation

Install update from vendor's website.

Vulnerable software versions

libreoffice (Alpine package): 6.2.6.2-r0

CPE2.3 External links

https://git.alpinelinux.org/aports/commit/?id=95d37f7648e3d147b01e5becbc6a7096a318b3bc
https://git.alpinelinux.org/aports/commit/?id=d58d8bd28529bff518fac4218ac7b856a44c2ef6


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.



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