Все бюллетени/p9/ALT-PU-2019-2271-1
ALT-PU-2019-2271-1

Обновление пакета squid в ветке p9

Версия4.8-alt1
Задание#234609
Опубликовано2019-07-16
Макс. серьёзностьCRITICAL
Серьёзность:

Закрытые проблемы (17)

BDU:2020-01848
MEDIUM5.9

Уязвимость прокси-сервера Squid, связанная с отсутствием защиты служебных данных, позволяющая нарушителю раскрыть защищаемую информацию

Опубликовано: 2020-04-29Изменено: 2023-11-21
CVSS 3.xСРЕДНЯЯ 5.9
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0СРЕДНЯЯ 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N
Ссылки
BDU:2020-02395
CRITICAL9.8

Уязвимость компонента Proxy-Authentication прокси-сервера Squid, позволяющая нарушителю вызвать отказ в обслуживании или выполнить произвольный код

Опубликовано: 2020-05-29Изменено: 2023-11-21
CVSS 3.xКРИТИЧЕСКАЯ 9.8
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS 2.0ВЫСОКАЯ 7.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P
Ссылки
BDU:2020-02396
HIGH8.8

Уязвимость функции HttpHeader::getAuth прокси-сервера Squid, позволяющая нарушителю вызвать отказ в обслуживании или выполнить произвольный код

Опубликовано: 2020-05-29
CVSS 3.xВЫСОКАЯ 8.8
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.0КРИТИЧЕСКАЯ 10.0
CVSS:2.0/AV:N/AC:L/Au:N/C:C/I:C/A:C
Ссылки
BDU:2020-02401
MEDIUM6.1

Уязвимость утилиты cachemgr.cgi прокси-сервера Squid, позволяющая нарушителю осуществлять межсайтовые сценарные атаки

Опубликовано: 2020-05-29Изменено: 2023-11-21
CVSS 3.xСРЕДНЯЯ 6.1
CVSS:3.x/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
CVSS 2.0СРЕДНЯЯ 5.8
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:N
Ссылки
BDU:2020-02594
HIGH7.5

Уязвимость прокси-сервера Squid, существующая из-за недостаточной проверки входных данных, позволяющая нарушителю получить доступ к функциям, которые могут использовать только обратные прокси

Опубликовано: 2020-06-05Изменено: 2023-11-21
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N
Ссылки
BDU:2020-02595
HIGH7.5

Уязвимость прокси-сервера Squid, связанная с отсутствием механизма аутентификации для url_regex, позволяющая нарушителю получить доступ к заблокированному ресурсу

Опубликовано: 2020-06-05Изменено: 2023-11-21
CVSS 2.0ВЫСОКАЯ 7.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P
Ссылки
BDU:2020-03316
HIGH7.5

Уязвимость компонента cachemgr.cgi прокси-сервера Squid, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2020-07-15
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0ВЫСОКАЯ 7.8
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:C
Ссылки
BDU:2021-01724
MEDIUM5.9

Уязвимость механизма обработки элементов ESI прокси-сервера Squid, связанная с выходом операции за допустимые границы буфера данных, позволяющая нарушителю вызвать отказ в обслуживании

Опубликовано: 2021-03-30Изменено: 2023-11-21
CVSS 3.xСРЕДНЯЯ 5.9
CVSS:3.x/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.0СРЕДНЯЯ 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P
Ссылки
CVE-2019-12520
HIGH7.5

An issue was discovered in Squid through 4.7 and 5. When receiving a request, Squid checks its cache to see if it can serve up a response. It does this by making a MD5 hash of the absolute URL of the request. If found, it servers the request. The absolute URL can include the decoded UserInfo (username and password) for certain protocols. This decoded info is prepended to the domain. This allows an attacker to provide a username that has special characters to delimit the domain, and treat the rest of the URL as a path or query string. An attacker could first make a request to their domain using an encoded username, then when a request for the target domain comes in that decodes to the exact URL, it will serve the attacker's HTML instead of the real HTML. On Squid servers that also act as reverse proxies, this allows an attacker to gain access to features that only reverse proxies can use, such as ESI.

Опубликовано: 2020-04-15Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:N/A:N
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Ссылки
CVE-2019-12521
MEDIUM5.9

An issue was discovered in Squid through 4.7. When Squid is parsing ESI, it keeps the ESI elements in ESIContext. ESIContext contains a buffer for holding a stack of ESIElements. When a new ESIElement is parsed, it is added via addStackElement. addStackElement has a check for the number of elements in this buffer, but it's off by 1, leading to a Heap Overflow of 1 element. The overflow is within the same structure so it can't affect adjacent memory blocks, and thus just leads to a crash while processing.

Опубликовано: 2020-04-15Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:N/A:P
CVSS 3.xСРЕДНЯЯ 5.9
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Ссылки
CVE-2019-12522
MEDIUM4.5

An issue was discovered in Squid through 4.7. When Squid is run as root, it spawns its child processes as a lesser user, by default the user nobody. This is done via the leave_suid call. leave_suid leaves the Saved UID as 0. This makes it trivial for an attacker who has compromised the child process to escalate their privileges back to root.

Опубликовано: 2020-04-15Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 4.4
CVSS:2.0/AV:L/AC:M/Au:N/C:P/I:P/A:P
CVSS 3.xСРЕДНЯЯ 4.5
CVSS:3.x/CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
Ссылки
CVE-2019-12524
CRITICAL9.8

An issue was discovered in Squid through 4.7. When handling requests from users, Squid checks its rules to see if the request should be denied. Squid by default comes with rules to block access to the Cache Manager, which serves detailed server information meant for the maintainer. This rule is implemented via url_regex. The handler for url_regex rules URL decodes an incoming request. This allows an attacker to encode their URL to bypass the url_regex check, and gain access to the blocked resource.

Опубликовано: 2020-04-15Изменено: 2024-11-21
CVSS 2.0ВЫСОКАЯ 7.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS 3.xКРИТИЧЕСКАЯ 9.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Ссылки
CVE-2019-12525
CRITICAL9.8

An issue was discovered in Squid 3.3.9 through 3.5.28 and 4.x through 4.7. When Squid is configured to use Digest authentication, it parses the header Proxy-Authorization. It searches for certain tokens such as domain, uri, and qop. Squid checks if this token's value starts with a quote and ends with one. If so, it performs a memcpy of its length minus 2. Squid never checks whether the value is just a single quote (which would satisfy its requirements), leading to a memcpy of its length minus 1.

Опубликовано: 2019-07-11Изменено: 2024-11-21
CVSS 2.0ВЫСОКАЯ 7.5
CVSS:2.0/AV:N/AC:L/Au:N/C:P/I:P/A:P
CVSS 3.xКРИТИЧЕСКАЯ 9.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Ссылки
CVE-2019-12527
HIGH8.8

An issue was discovered in Squid 4.0.23 through 4.7. When checking Basic Authentication with HttpHeader::getAuth, Squid uses a global buffer to store the decoded data. Squid does not check that the decoded length isn't greater than the buffer, leading to a heap-based buffer overflow with user controlled data.

Опубликовано: 2019-07-11Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 6.8
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:P/A:P
CVSS 3.xВЫСОКАЯ 8.8
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Ссылки
CVE-2019-12529
MEDIUM5.9

An issue was discovered in Squid 2.x through 2.7.STABLE9, 3.x through 3.5.28, and 4.x through 4.7. When Squid is configured to use Basic Authentication, the Proxy-Authorization header is parsed via uudecode. uudecode determines how many bytes will be decoded by iterating over the input and checking its table. The length is then used to start decoding the string. There are no checks to ensure that the length it calculates isn't greater than the input buffer. This leads to adjacent memory being decoded as well. An attacker would not be able to retrieve the decoded data unless the Squid maintainer had configured the display of usernames on error pages.

Опубликовано: 2019-07-11Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:P/I:N/A:N
CVSS 3.xСРЕДНЯЯ 5.9
CVSS:3.x/CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Ссылки
CVE-2019-12854
HIGH7.5

Due to incorrect string termination, Squid cachemgr.cgi 4.0 through 4.7 may access unallocated memory. On systems with memory access protections, this can cause the CGI process to terminate unexpectedly, resulting in a denial of service for all clients using it.

Опубликовано: 2019-08-15Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 5.0
CVSS:2.0/AV:N/AC:L/Au:N/C:N/I:N/A:P
CVSS 3.xВЫСОКАЯ 7.5
CVSS:3.x/CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Ссылки
CVE-2019-13345
MEDIUM6.1

The cachemgr.cgi web module of Squid through 4.7 has XSS via the user_name or auth parameter.

Опубликовано: 2019-07-05Изменено: 2024-11-21
CVSS 2.0СРЕДНЯЯ 4.3
CVSS:2.0/AV:N/AC:M/Au:N/C:N/I:P/A:N
CVSS 3.xСРЕДНЯЯ 6.1
CVSS:3.x/CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Ссылки