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ALSA-2021:4292 — Moderate: squid:4 security, bug fix, and enhancement update

Affected: AlmaLinux:8: libecap, AlmaLinux:8: libecap-devel, AlmaLinux:8: squid

Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects.

The following packages have been upgraded to a later upstream version: squid (4.15). (BZ#1964384)

Security Fix(es):

* squid: denial of service in URN processing (CVE-2021-28651)

* squid: denial of service issue in Cache Manager (CVE-2021-28652)

* squid: denial of service in HTTP response processing (CVE-2021-28662)

* squid: improper input validation in HTTP Range header (CVE-2021-31806)

* squid: incorrect memory management in HTTP Range header (CVE-2021-31807)

* squid: integer overflow in HTTP Range header (CVE-2021-31808)

* squid: denial of service in HTTP response processing (CVE-2021-33620)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the AlmaLinux Release Notes linked from the References section.

bdu:2021-02730

EUVD-2026-26040

fkie_cve-2021-28652

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to incorrect parser validation, it allows a Denial of Service attack against the Cache Manager API. This allows a trusted client to trigger memory leaks that. over time, lead to a Denial of Service via an unspecified short query string. This attack is limited to clients with Cache Manager API access privilege.

gsd-2021-28652

OESA-2021-1240 — squid security update

Affected: openEuler:20.03-LTS-SP1: squid

Squid is a high-performance proxy caching server. It handles all requests in a single, non-blocking, I/O-driven process and keeps meta data and implements negative caching of failed requests. Security Fix(es): Squid before 4.15 and 5.x before 5.0.6 allows remote servers to cause a denial of service (affecting availability to all clients) via an HTTP response. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent by the server.(CVE-2021-33620) An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a memory-management bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy) via HTTP Range request processing.(CVE-2021-31806) An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to an input-validation bug, it is vulnerable to a Denial of Service attack (against all clients using the proxy). A client sends an HTTP Range request to trigger this.(CVE-2021-31808) An issue was discovered in Squid 4.x before 4.15 and 5.x before 5.0.6. If a remote server sends a certain response header over HTTP or HTTPS, there is a denial of service. This header can plausibly occur in benign network traffic.(CVE-2021-28662) An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. Due to a buffer-management bug, it allows a denial of service. When resolving a request with the urn: scheme, the parser leaks a small amount of memory. However, there is an unspe…

openSUSE-SU-2021:0879-1 — Security update for squid

Security update for squid

SUSE-SU-2021:1838-1 — Security update for squid

Security update for squid

UBUNTU-CVE-2021-28652

Affected: Ubuntu:Pro:16.04:LTS: squid3, Ubuntu:18.04:LTS: squid3, Ubuntu:20.04:LTS: squid

WID-SEC-W-2022-0672 — Squid: Mehrere Schwachstellen ermöglichen Denial of Service

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Squid ausnutzen, um einen Denial of Service Angriff durchzuführen.