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CVE-2018-14773

Published: 3 August 2018

An issue was discovered in Http Foundation in Symfony 2.7.0 through 2.7.48, 2.8.0 through 2.8.43, 3.3.0 through 3.3.17, 3.4.0 through 3.4.13, 4.0.0 through 4.0.13, and 4.1.0 through 4.1.2. It arises from support for a (legacy) IIS header that lets users override the path in the request URL via the X-Original-URL or X-Rewrite-URL HTTP request header. These headers are designed for IIS support, but it's not verified that the server is in fact running IIS, which means anybody who can send these requests to an application can trigger this. This affects \Symfony\Component\HttpFoundation\Request::prepareRequestUri() where X-Original-URL and X_REWRITE_URL are both used. The fix drops support for these methods so that they cannot be used as attack vectors such as web cache poisoning.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
symfony
Launchpad, Ubuntu, Debian
bionic Needed

cosmic Not vulnerable
(3.4.15+dfsg-2ubuntu4)
disco Not vulnerable
(3.4.15+dfsg-2ubuntu4)
eoan Not vulnerable
(3.4.15+dfsg-2ubuntu4)
focal Not vulnerable
(3.4.15+dfsg-2ubuntu4)
groovy Not vulnerable
(3.4.15+dfsg-2ubuntu4)
hirsute Not vulnerable
(3.4.15+dfsg-2ubuntu4)
impish Not vulnerable
(3.4.15+dfsg-2ubuntu4)
jammy Not vulnerable
(3.4.15+dfsg-2ubuntu4)
kinetic Not vulnerable
(3.4.15+dfsg-2ubuntu4)
lunar Not vulnerable
(3.4.15+dfsg-2ubuntu4)
mantic Not vulnerable
(3.4.15+dfsg-2ubuntu4)
trusty Does not exist

upstream
Released (3.4.14+dfsg-1)
xenial Needed

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality None
Integrity impact High
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N