Security restrictions bypass in ghostscript (Alpine package)

1) Security restrictions bypass

EUVDB-ID: #VU15748

Risk: Low

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-18073

CWE-ID: CWE-264 - Permissions, Privileges, and Access Controls

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass security restrictions on the target system.

The weakness exists due to exposure of system operators in the saved execution stack in an error object. A remote attacker can bypass a sandbox protection mechanism to conduct further attacks.

Mitigation

Install update from vendor's website.

Vulnerable software versions

ghostscript (Alpine package): 9.22-r0 - 9.25-r0

ghostscript (Alpine package):

External links

http://git.alpinelinux.org/aports/commit/?id=b0243d03648d68851d3b5edb68da29eaae5c9f0f
http://git.alpinelinux.org/aports/commit/?id=b38a11ee1f5109ffc2f67afa52903b9437dd4111
http://git.alpinelinux.org/aports/commit/?id=26eef1d272a38c562dbd29a5488fb5a5efaa903e
http://git.alpinelinux.org/aports/commit/?id=9ce86c9b20156dccf8608730175929399fa2ac9b
http://git.alpinelinux.org/aports/commit/?id=df196f013c1754a810980f06dba86c4f9e8d1cfe
http://git.alpinelinux.org/aports/commit/?id=38c2fab4c40672459821302e7eec434b602757b8
http://git.alpinelinux.org/aports/commit/?id=4a52a88813303a6f82eed629efa03380141dfb5b

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.