Описание
GNW protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
A flaw was found in the GNW protocol dissector in Wireshark. This issue occurs when malformed packets are decoded from a pcap file or the network, causing an infinite loop that leads to an excessive consumption of CPU resources, resulting in a denial of service.
Отчет
This issue will cause a crash in Wireshark with no other security impact. Also, this flaw can only be exploited when a malformed pcap file is processed. Due to these reasons, this vulnerability has been rated with a moderate severity.
Меры по смягчению последствий
If the GNW protocol dissector is not being used, it can be disabled via the "Enabled Protocols" dialog box in the Wireshark GUI application. This will also disable the protocol dissector when using "tshark", the command line tool. See the links below for instructions to disable a protocol in Wireshark, specifically the "Control Protocol Dissection" section and the "disabled_protos" configuration file option. https://www.wireshark.org/docs/wsug_html_chunked/ChCustProtocolDissectionSection.html https://www.wireshark.org/docs/wsug_html_chunked/ChAppFilesConfigurationSection.html
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 10 | wireshark | Fix deferred | ||
| Red Hat Enterprise Linux 6 | wireshark | Not affected | ||
| Red Hat Enterprise Linux 7 | wireshark | Not affected | ||
| Red Hat Enterprise Linux 8 | wireshark | Not affected | ||
| Red Hat Enterprise Linux 9 | wireshark | Not affected |
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Дополнительная информация
Статус:
EPSS
5.5 Medium
CVSS3
Связанные уязвимости
GNW protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
GNW protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
GNW protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4 ...
GNW protocol dissector infinite loop in Wireshark 4.6.0 to 4.6.4 and 4.4.0 to 4.4.14 allows denial of service
Уязвимость анализатора протокола GNW анализатора трафика компьютерных сетей Wireshark, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
5.5 Medium
CVSS3