Out-of-bounds read in opensc (Alpine package)

1) Out-of-bounds read

EUVDB-ID: #VU16739

Risk: Low

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

CVE-ID: CVE-2018-16427

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The vulnerability exists due to out-of-bounds read when handling responses. A remote unauthenticated attacker can supply specially crafted smartcards to crash the opensc library using programs.

Mitigation

Install update from vendor's website.

Vulnerable software versions

opensc (Alpine package): 0.13.0-r0 - 0.17.0-r5

CPE2.3

• cpe:2.3:o:alpine:opensc_alpine_package:0.13.0-r0:*:*:*:*:alpine_linux:*:2.7
• cpe:2.3:o:alpine:opensc_alpine_package:0.14.0-r0:*:*:*:*:alpine_linux:*:3.2
• cpe:2.3:o:alpine:opensc_alpine_package:0.15.0-r0:*:*:*:*:alpine_linux:*:3.3

External links

https://git.alpinelinux.org/aports/commit/?id=8e9bdc4dd06ce47b8607d404816ebdbcd628cf2c
https://git.alpinelinux.org/aports/commit/?id=8ed91d2a9a7e8d3d7eebcf756173eb64be295118

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.