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openSUSE-SU-2020:1346-1

Опубликовано: 05 сент. 2020
Источник: suse-cvrf

Описание

Security update for squid

This update for squid fixes the following issues:

squid was updated to version 4.13:

  • CVE-2020-24606: Fix livelocking in peerDigestHandleReply (bsc#1175671).
  • CVE-2020-15811: Improve Transfer-Encoding handling (bsc#1175665).
  • CVE-2020-15810: Enforce token characters for field-name (bsc#1175664).

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

Список пакетов

openSUSE Leap 15.1
squid-4.13-lp151.2.24.1

Ссылки

Описание

An issue was discovered in http/ContentLengthInterpreter.cc in Squid before 4.12 and 5.x before 5.0.3. A Request Smuggling and Poisoning attack can succeed against the HTTP cache. The client sends an HTTP request with a Content-Length header containing "+\ "-" or an uncommon shell whitespace character prefix to the length field-value.

Затронутые продукты
openSUSE Leap 15.1:squid-4.13-lp151.2.24.1
Ссылки

Описание

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Smuggling attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the proxy cache and any downstream caches with content from an arbitrary source. When configured for relaxed header parsing (the default), Squid relays headers containing whitespace characters to upstream servers. When this occurs as a prefix to a Content-Length header, the frame length specified will be ignored by Squid (allowing for a conflicting length to be used from another Content-Length header) but relayed upstream.

Затронутые продукты
openSUSE Leap 15.1:squid-4.13-lp151.2.24.1
Ссылки

Описание

An issue was discovered in Squid before 4.13 and 5.x before 5.0.4. Due to incorrect data validation, HTTP Request Splitting attacks may succeed against HTTP and HTTPS traffic. This leads to cache poisoning. This allows any client, including browser scripts, to bypass local security and poison the browser cache and any downstream caches with content from an arbitrary source. Squid uses a string search instead of parsing the Transfer-Encoding header to find chunked encoding. This allows an attacker to hide a second request inside Transfer-Encoding: it is interpreted by Squid as chunked and split out into a second request delivered upstream. Squid will then deliver two distinct responses to the client, corrupting any downstream caches.

Затронутые продукты
openSUSE Leap 15.1:squid-4.13-lp151.2.24.1
Ссылки

Описание

Squid before 4.13 and 5.x before 5.0.4 allows a trusted peer to perform Denial of Service by consuming all available CPU cycles during handling of a crafted Cache Digest response message. This only occurs when cache_peer is used with the cache digests feature. The problem exists because peerDigestHandleReply() livelocking in peer_digest.cc mishandles EOF.

Затронутые продукты
openSUSE Leap 15.1:squid-4.13-lp151.2.24.1
Ссылки
Уязвимость openSUSE-SU-2020:1346-1