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CVE-2021-31808

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2021-4292-02
Posted Nov 10, 2021
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2021-4292-02 - Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Issues addressed include denial of service and integer overflow vulnerabilities.

tags | advisory, web, denial of service, overflow, vulnerability
systems | linux, redhat
advisories | CVE-2021-28651, CVE-2021-28652, CVE-2021-28662, CVE-2021-31806, CVE-2021-31807, CVE-2021-31808, CVE-2021-33620
SHA-256 | 44dde0c6aa32febf96146f274291765b74b1aae8e28cdf03022d9eab0e1caee9
Debian Security Advisory 4924-1
Posted Jun 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4924-1 - Multiple denial of service vulnerabilities were discovered in the Squid proxy caching server.

tags | advisory, denial of service, vulnerability
systems | linux, debian
advisories | CVE-2021-28651, CVE-2021-28652, CVE-2021-28662, CVE-2021-31806, CVE-2021-31807, CVE-2021-31808
SHA-256 | bb078100916e24e9f6fab4cdffd1581bfb25135effcfd1ea0796c419492e9ab7
Ubuntu Security Notice USN-4981-1
Posted Jun 4, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4981-1 - Joshua Rogers discovered that Squid incorrectly handled requests with the urn: scheme. A remote attacker could possibly use this issue to cause Squid to consume resources, leading to a denial of service. Joshua Rogers discovered that Squid incorrectly handled requests to the Cache Manager API. A remote attacker with access privileges could possibly use this issue to cause Squid to consume resources, leading to a denial of service. This issue was only addressed in Ubuntu 20.04 LTS, Ubuntu 20.10, and Ubuntu 21.04. Various other issues were also addressed.

tags | advisory, remote, denial of service
systems | linux, ubuntu
advisories | CVE-2021-28651, CVE-2021-28652, CVE-2021-28662, CVE-2021-31807, CVE-2021-31808, CVE-2021-33620
SHA-256 | 5f73be4fd8bb6e49cdf2fb128fc4a0c34429d328f98775c05ee84b4c5044d2b9
Gentoo Linux Security Advisory 202105-14
Posted May 26, 2021
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202105-14 - Multiple vulnerabilities have been found in Squid, the worst of which could result in a Denial of Service condition. Versions less than 4.15 are affected.

tags | advisory, denial of service, vulnerability
systems | linux, gentoo
advisories | CVE-2020-25097, CVE-2021-28116, CVE-2021-28651, CVE-2021-28652, CVE-2021-28662, CVE-2021-31806, CVE-2021-31807, CVE-2021-31808
SHA-256 | f90ca34e9e31fae3683aafe918e223a86b8b36eac92a681b26440c11aba9310a
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