Symfony up to 4.2.0 Login Form Backslash redirect

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.5$0-$5k0.00

Summaryinfo

A vulnerability was found in Symfony up to 4.2.0 and classified as problematic. The affected element is an unknown function of the component Login Form. Such manipulation as part of Backslash leads to redirect. This vulnerability is referenced as CVE-2018-19790. It is possible to launch the attack remotely. No exploit is available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Symfony up to 4.2.0. Affected by this issue is an unknown code of the component Login Form. The manipulation as part of a Backslash leads to a redirect vulnerability. Using CWE to declare the problem leads to CWE-601. A web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a Redirect. This simplifies phishing attacks. Impacted is confidentiality, integrity, and availability. CVE summarizes:

An open redirect was discovered in Symfony 2.7.x before 2.7.50, 2.8.x before 2.8.49, 3.x before 3.4.20, 4.0.x before 4.0.15, 4.1.x before 4.1.9 and 4.2.x before 4.2.1. By using backslashes in the `_failure_path` input field of login forms, an attacker can work around the redirection target restrictions and effectively redirect the user to any domain after login.

The bug was discovered 12/06/2018. The weakness was published 12/18/2018 (Website). The advisory is available at lists.fedoraproject.org. This vulnerability is handled as CVE-2018-19790 since 12/02/2018. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1204.001 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 11 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 120596 (Fedora 28 : php-symfony (2018-8c06b6defd)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Fedora Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176648 (Debian Security Update for symfony (DLA 1707-1)).

Upgrading to version 2.7.50, 2.8.49, 3.4.20, 4.0.15, 4.1.9 or 4.2.1 eliminates this vulnerability. A possible mitigation has been published before and not just after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (120596) and SecurityFocus (BID 106249†). Similar entries are available at VDB-122590, VDB-122652 and VDB-128089. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.6
VulDB Meta Temp Score: 6.4

VulDB Base Score: 7.1
VulDB Temp Score: 6.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Redirect
CWE: CWE-601
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 120596
Nessus Name: Fedora 28 : php-symfony (2018-8c06b6defd)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Symfony 2.7.50/2.8.49/3.4.20/4.0.15/4.1.9/4.2.1

Timelineinfo

12/02/2018 🔍
12/06/2018 +4 days 🔍
12/17/2018 +11 days 🔍
12/18/2018 +1 days 🔍
12/18/2018 +0 days 🔍
12/19/2018 +1 days 🔍
12/19/2018 +0 days 🔍
01/03/2019 +15 days 🔍
06/19/2023 +1628 days 🔍

Sourcesinfo

Advisory: FEDORA-2018-8c06b6defd
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-19790 (🔍)
GCVE (CVE): GCVE-0-2018-19790
GCVE (VulDB): GCVE-100-128090
SecurityFocus: 106249 - Symfony Local File Include and Open Redirection Vulnerabilities

See also: 🔍

Entryinfo

Created: 12/19/2018 07:50
Updated: 06/19/2023 18:18
Changes: 12/19/2018 07:50 (75), 04/21/2020 18:46 (4), 06/19/2023 18:11 (4), 06/19/2023 18:18 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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