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CVE-2019-18679

Status Candidate

Overview

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.

Related Files

Red Hat Security Advisory 2020-4743-01
Posted Nov 4, 2020
Authored by Red Hat | Site access.redhat.com

Red Hat Security Advisory 2020-4743-01 - Squid is a high-performance proxy caching server for web clients, supporting FTP, Gopher, and HTTP data objects. Issues addressed include buffer overflow, bypass, cross site request forgery, denial of service, heap overflow, information leakage, and out of bounds read vulnerabilities.

tags | advisory, web, denial of service, overflow, vulnerability, csrf
systems | linux, redhat
advisories | CVE-2019-12520, CVE-2019-12521, CVE-2019-12523, CVE-2019-12524, CVE-2019-12526, CVE-2019-12528, CVE-2019-12529, CVE-2019-12854, CVE-2019-18676, CVE-2019-18677, CVE-2019-18678, CVE-2019-18679, CVE-2019-18860, CVE-2020-14058, CVE-2020-15049, CVE-2020-24606, CVE-2020-8449, CVE-2020-8450
SHA-256 | 6a36bcffb87c3fe39872c03d6a9977d9fae1e90b42488ae64fd7e983caa0c436
Gentoo Linux Security Advisory 202003-34
Posted Mar 16, 2020
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202003-34 - Multiple vulnerabilities have been found in Squid, the worst of which could lead to arbitrary code execution. Versions less than 4.10 are affected.

tags | advisory, arbitrary, vulnerability, code execution
systems | linux, gentoo
advisories | CVE-2019-12526, CVE-2019-12528, CVE-2019-18678, CVE-2019-18679, CVE-2020-8449, CVE-2020-8450, CVE-2020-8517
SHA-256 | 75240e0416b3fb5f8be101638fda3295dca71eb0dee0fffeb95657098130ceb0
Ubuntu Security Notice USN-4213-1
Posted Dec 4, 2019
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4213-1 - Jeriko One and Kristoffer Danielsson discovered that Squid incorrectly handled certain URN requests. A remote attacker could possibly use this issue to bypass access checks and access restricted servers. This issue was only addressed in Ubuntu 19.04 and Ubuntu 19.10. Jeriko One discovered that Squid incorrectly handed URN responses. A remote attacker could use this issue to cause Squid to crash, resulting in a denial of service, or possibly execute arbitrary code. Various other issues were also addressed.

tags | advisory, remote, denial of service, arbitrary
systems | linux, ubuntu
advisories | CVE-2019-12523, CVE-2019-12526, CVE-2019-12854, CVE-2019-18676, CVE-2019-18677, CVE-2019-18678, CVE-2019-18679
SHA-256 | 95608e82aa5bc19b1025fff36128f36c39a6e83721488fe4c6dc58d9f2cfe122
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