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openSUSE-SU-2019:2540-1

Опубликовано: 21 нояб. 2019
Источник: suse-cvrf

Описание

Security update for squid

This update for squid to version 4.9 fixes the following issues:

Security issues fixed:

  • CVE-2019-13345: Fixed multiple cross-site scripting vulnerabilities in cachemgr.cgi (bsc#1140738).
  • CVE-2019-12526: Fixed potential remote code execution during URN processing (bsc#1156326).
  • CVE-2019-12523,CVE-2019-18676: Fixed multiple improper validations in URI processing (bsc#1156329).
  • CVE-2019-18677: Fixed Cross-Site Request Forgery in HTTP Request processing (bsc#1156328).
  • CVE-2019-18678: Fixed incorrect message parsing which could have led to HTTP request splitting issue (bsc#1156323).
  • CVE-2019-18679: Fixed information disclosure when processing HTTP Digest Authentication (bsc#1156324).

Other issues addressed:

  • Fixed DNS failures when peer name was configured with any upper case characters
  • Fixed several rock cache_dir corruption issues

This update was imported from the SUSE:SLE-15:Update update project.

Список пакетов

openSUSE Leap 15.0
squid-4.9-lp150.13.1

Ссылки

Описание

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

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.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

An issue was discovered in Squid before 4.9. URN response handling in Squid suffers from a heap-based buffer overflow. When receiving data from a remote server in response to an URN request, Squid fails to ensure that the response can fit within the buffer. This leads to attacker controlled data overflowing in the heap.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

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.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

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.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

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.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

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

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

An issue was discovered in Squid 3.x and 4.x through 4.8. Due to incorrect input validation, there is a heap-based buffer overflow that can result in Denial of Service to all clients using the proxy. Severity is high due to this vulnerability occurring before normal security checks; any remote client that can reach the proxy port can trivially perform the attack via a crafted URI scheme.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

An issue was discovered in Squid 3.x and 4.x through 4.8 when the append_domain setting is used (because the appended characters do not properly interact with hostname length restrictions). Due to incorrect message processing, it can inappropriately redirect traffic to origins it should not be delivered to.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

An issue was discovered in Squid 3.x and 4.x through 4.8. It allows attackers to smuggle HTTP requests through frontend software to a Squid instance that splits the HTTP Request pipeline differently. The resulting Response messages corrupt caches (between a client and Squid) with attacker-controlled content at arbitrary URLs. Effects are isolated to software between the attacker client and Squid. There are no effects on Squid itself, nor on any upstream servers. The issue is related to a request header containing whitespace between a header name and a colon.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

An issue was discovered in Squid 2.x, 3.x, and 4.x through 4.8. Due to incorrect data management, it is vulnerable to information disclosure when processing HTTP Digest Authentication. Nonce tokens contain the raw byte value of a pointer that sits within heap memory allocation. This information reduces ASLR protections and may aid attackers isolating memory areas to target for remote code execution attacks.

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки

Описание

The /usr/sbin/pinger binary packaged with squid in SUSE Linux Enterprise Server 15 before and including version 4.8-5.8.1 and in SUSE Linux Enterprise Server 12 before and including 3.5.21-26.17.1 had squid:root, 0750 permissions. This allowed an attacker that compromissed the squid user to gain persistence by changing the binary

Затронутые продукты
openSUSE Leap 15.0:squid-4.9-lp150.13.1
Ссылки
Уязвимость openSUSE-SU-2019:2540-1