Double Free in OpenSC

1) Double Free

EUVDB-ID: #VU32032

Risk: Medium

CVSSv3.1: 5.8 [CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-16425

CWE-ID: CWE-415 - Double Free

Exploit availability: No

Description

The vulnerability allows a local authenticated user to execute arbitrary code.

A double free when handling responses from an HSM Card in sc_pkcs15emu_sc_hsm_init in libopensc/pkcs15-sc-hsm.c in OpenSC before 0.19.0-rc1 could be used by attackers able to supply crafted smartcards to cause a denial of service (application crash) or possibly have unspecified other impact.

Mitigation

Install update from vendor's website.

Vulnerable software versions

OpenSC: 0.19.0

External links

http://github.com/OpenSC/OpenSC/commit/360e95d45ac4123255a4c796db96337f332160ad#diff-d643a0fa169471dbf2912f4866dc49c5
http://github.com/OpenSC/OpenSC/releases/tag/0.19.0-rc1
http://lists.debian.org/debian-lts-announce/2019/09/msg00009.html
http://www.x41-dsec.de/lab/advisories/x41-2018-002-OpenSC/

Q & A

Can this vulnerability be exploited remotely?

No. The attacker should have physical access to the system in order to successfully exploit this vulnerability.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.