Infinite loop in wireshark (Alpine package)

1) Infinite loop

EUVDB-ID: #VU10737

Risk: Low

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-7323

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 a calculated length was not monotonically increasing. A remote attacker can trigger an infinite loop in epan/dissectors/packet-wccp.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:a:alpine:wireshark_alpine_package:2.2.3-r0:*:*:*:*:alpine_linux:*:3.4
• cpe:2.3:a:alpine:wireshark_alpine_package:2.2.4-r0:*:*:*:*:alpine_linux:*:3.4
• cpe:2.3:a:alpine:wireshark_alpine_package:2.2.4-r1:*:*:*:*:alpine_linux:*:3.4
• cpe:2.3:a:alpine:wireshark_alpine_package::*:*:*:*:alpine_linux:*:*

External links

https://git.alpinelinux.org/aports/commit/?id=2c9c2f5d75d3f1f8579ff40387ce6d2575395477
https://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.