Описание
Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.
A flaw was found in Squid, which is susceptible to a Denial of Service (DoS) due to an Uncontrolled Recursion bug, specifically targeting HTTP Request parsing. Exploiting this issue involves a remote client initiating a DoS attack by sending an oversized X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This issue poses a threat to the stability and availability of the Squid service.
Отчет
Squid configurations lacking the "follow_x_forwarded_for" setting are not susceptible to the vulnerability.
Меры по смягчению последствий
Remove all "follow_x_forwarded_for" lines from squid.conf.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Red Hat Enterprise Linux 6 | squid | Out of support scope | ||
| Red Hat Enterprise Linux 6 | squid34 | Out of support scope | ||
| Red Hat Enterprise Linux 7 | squid | Fixed | RHSA-2024:1787 | 11.04.2024 |
| Red Hat Enterprise Linux 8 | squid | Fixed | RHSA-2024:1375 | 19.03.2024 |
| Red Hat Enterprise Linux 8.2 Advanced Update Support | squid | Fixed | RHSA-2024:0772 | 12.02.2024 |
| Red Hat Enterprise Linux 8.2 Telecommunications Update Service | squid | Fixed | RHSA-2024:0772 | 12.02.2024 |
| Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions | squid | Fixed | RHSA-2024:0772 | 12.02.2024 |
| Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support | squid | Fixed | RHSA-2024:0773 | 12.02.2024 |
| Red Hat Enterprise Linux 8.4 Telecommunications Update Service | squid | Fixed | RHSA-2024:0773 | 12.02.2024 |
| Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions | squid | Fixed | RHSA-2024:0773 | 12.02.2024 |
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Дополнительная информация
Статус:
EPSS
7.5 High
CVSS3
Связанные уязвимости
Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.
Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion bug in versions 2.6 through 2.7.STABLE9, versions 3.1 through 5.9, and versions 6.0.1 through 6.5, Squid may be vulnerable to a Denial of Service attack against HTTP Request parsing. This problem allows a remote client to perform Denial of Service attack by sending a large X-Forwarded-For header when the follow_x_forwarded_for feature is configured. This bug is fixed by Squid version 6.6. In addition, patches addressing this problem for the stable releases can be found in Squid's patch archives.
Squid is a caching proxy for the Web. Due to an Uncontrolled Recursion ...
Уязвимость функции follow_x_forwarded_for() прокси-сервера Squid, позволяющая нарушителю вызвать отказ в обслуживании
EPSS
7.5 High
CVSS3