Описание
X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
A flaw was found in Wireshark. A heap-based buffer overflow in the X11 protocol dissector allows an attacker to cause a Denial of Service (DoS) by injecting malformed packets or providing a crafted capture file. Successful exploitation leads to an application crash, disrupting network packet inspection.
Меры по смягчению последствий
Disable the X11 protocol dissector if analyzing network traffic that does not require X11 packet decoding. For command-line analysis using tshark, disable the protocol at runtime:
For persistent user configuration, add the protocol identifier to the disabled protocols file:
In the Wireshark graphical interface, the dissector can be disabled by navigating to Analyze > Enabled Protocols, searching for "X11", unchecking the protocol entry, and clicking OK. Caveats: Disabling this dissector prevents Wireshark from decoding and analyzing X11 protocol traffic. Running Wireshark sessions must be restarted for configuration file changes to take effect. Additionally, avoid opening capture files obtained from untrusted sources and avoid running packet capture utilities with elevated root privileges.
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
X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 all ...
X11 protocol dissector crash in 4.6.0 to 4.6.8 and 4.4.0 to 4.4.18 allows denial of service
Уязвимость функции keycode2keysymString() анализатора трафика компьютерных сетей Wireshark, позволяющая нарушителю вызывать отказ в обслуживании
EPSS
5.5 Medium
CVSS3