Infinite loop in wireshark (Alpine package)

1) Infinite loop

EUVDB-ID: #VU21090

Risk: Medium

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-2019-16319

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 infinite loop in Gryphon dissector when processing network packets in the "plugins/epan/gryphon/packet-gryphon.c" file. A remote attacker can consume all available system resources and cause denial of service conditions.

Mitigation

Install update from vendor's website.

Vulnerable software versions

wireshark (Alpine package): 2.6.2-r0 - 3.0.6-r0

CPE2.3

• cpe:2.3:o:alpine:wireshark_alpine_package:3.0.3-r1:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package:3.0.5-r0:*:*:*:*:alpine_linux:*:
• cpe:2.3:o:alpine:wireshark_alpine_package:2.6.2-r0:*:*:*:*:alpine_linux:*:

External links

http://git.alpinelinux.org/aports/commit/?id=7cebf230d168a5d9d2b48a4c5eb839f44e3637ed
http://git.alpinelinux.org/aports/commit/?id=cbc3b066429afdedd312a1fa857e16d6fc97bddf
http://git.alpinelinux.org/aports/commit/?id=af07e995a2d80494ea2afe134fa907a52446d037

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.