Infinite loop in wireshark (Alpine package)

1) Infinite loop

EUVDB-ID: #VU10743

Risk: Low

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-7327

CWE-ID: CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to an error when validating property lengths. A remote attacker can trigger an infinite loop in epan/dissectors/packet-openflow_v6.c and perform a denial of service (DoS) attack.

Mitigation

Install update from vendor's website.

Vulnerable software versions

wireshark (Alpine package): 2.2.3-r0 - 2.2.15-r0

wireshark (Alpine package):

CPE2.3

• cpe:2.3:o:alpine:wireshark_alpine_package:2.2.6-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package:2.2.7-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package:2.2.8-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package::*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=2c9c2f5d75d3f1f8579ff40387ce6d2575395477
http://git.alpinelinux.org/aports/commit/?id=272bf54b9456624dded41fa316f4ae091fc4fcbb

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.