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CVE-2020-25613

Status Candidate

Overview

An issue was discovered in Ruby through 2.5.8, 2.6.x through 2.6.6, and 2.7.x through 2.7.1. WEBrick, a simple HTTP server bundled with Ruby, had not checked the transfer-encoding header value rigorously. An attacker may potentially exploit this issue to bypass a reverse proxy (which also has a poor header check), which may lead to an HTTP Request Smuggling attack.

Related Files

Ubuntu Security Notice USN-4882-1
Posted Mar 19, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 4882-1 - It was discovered that the Ruby JSON gem incorrectly handled certain JSON files. If a user or automated system were tricked into parsing a specially crafted JSON file, a remote attacker could use this issue to execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 18.04 LTS. It was discovered that Ruby incorrectly handled certain socket memory operations. A remote attacker could possibly use this issue to obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. Various other issues were also addressed.

tags | advisory, remote, arbitrary, ruby
systems | linux, ubuntu
advisories | CVE-2020-10663, CVE-2020-10933, CVE-2020-25613
MD5 | 81a24afb7b9477db4f4abcf41514d69d
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