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Advisory details: gitlab / packagist/symfony/http-foundation/CVE-2018-14773
Advisory ID gitlab/packagist/symfony/http-foundation/CVE-2018-14773
Aliases CVE-2018-14773
Summary URL Rewrite vulnerability An issue in Symfony 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.
Status Published
Exploitability 0.5
Weighted Severity 0.0
Risk
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-937 OWASP Top Ten 2013 Category A9 - Using Components with Known Vulnerabilities
CWE-1035 OWASP Top Ten 2017 Category A9 - Using Components with Known Vulnerabilities
System Score Found at
cvssv2 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-foundation/CVE-2018-14773.yml
cvssv3 https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-foundation/CVE-2018-14773.yml
Reference id Reference type URL
CVE-2018-14773-REMOVE-SUPPORT-FOR-LEGACY-AND-RISKY-HTTP-HEADERS https://symfony.com/blog/cve-2018-14773-remove-support-for-legacy-and-risky-http-headers
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: AV:N/AC:L/Au:S/C:N/I:P/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-foundation/CVE-2018-14773.yml
Exploitability (E) Access Vector (AV) Access Complexity (AC) Authentication (Au) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

high

functional

unproven

proof_of_concept

not_defined

local

adjacent_network

network

high

medium

low

multiple

single

none

none

partial

complete

none

partial

complete

none

partial

complete
Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N Found at https://gitlab.com/gitlab-org/advisories-community/-/blob/main/packagist/symfony/http-foundation/CVE-2018-14773.yml
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.