Improper input validation in wireshark (Alpine package)

Published: 2018-07-30

Risk	Medium
Patch available	YES
Number of vulnerabilities	1
CVE-ID	CVE-2018-14340
CWE-ID	CWE-20
Exploitation vector	Network
Public exploit	N/A
Vulnerable software Subscribe	wireshark (Alpine package) Operating systems & Components / Operating system package or component
Vendor	Alpine Linux Development Team

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Improper input validation

EUVDB-ID: #VU14108

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2018-14340

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

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

The weakness exists due to a flaw when handling malicious input. A remote attacker can inject a malformed packet onto the wire or trick the victim into reading a malformed packet trace file and cause the dissectors that support zlib decompression to crash.

Mitigation

Install update from vendor's website.

Vulnerable software versions

wireshark (Alpine package): 2.2.3-r0 - 2.4.12-r0

wireshark (Alpine package):

CPE2.3

External links

http://git.alpinelinux.org/aports/commit/?id=de7f79ec7d1faf81ba538ae2ea1262eeaee24972
http://git.alpinelinux.org/aports/commit/?id=e7881754327e3e28822148252165ca22085a230d
http://git.alpinelinux.org/aports/commit/?id=3707c538782fe330b200ce42050813ee9b5af560

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.