Symfony up to 4.0-BETA4 Intl read path traversal

CVSS Meta Temp Score
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CTI Interest Score
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5.6$0-$5k0.00

A vulnerability classified as problematic has been found in Symfony up to 4.0-BETA4. Affected is the function read of the component Intl. The manipulation with an unknown input leads to a path traversal vulnerability. CWE is classifying the issue as CWE-22. The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. This is going to have an impact on confidentiality. CVE summarizes:

An issue was discovered in Symfony before 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5, and 4.0-BETA5. The Intl component includes various bundle readers that are used to read resource bundles from the local filesystem. The read() methods of these classes use a path and a locale to determine the language bundle to retrieve. The locale argument value is commonly retrieved from untrusted user input (like a URL parameter). An attacker can use this argument to navigate to arbitrary directories via the dot-dot-slash attack, aka Directory Traversal.

The bug was discovered 11/17/2017. The weakness was disclosed 08/06/2018 (Website). The advisory is shared for download at debian.org. This vulnerability is traded as CVE-2017-16654 since 11/06/2017. The exploitability is told to be easy. The attack needs to be approached locally. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1006.

The vulnerability was handled as a non-public zero-day exploit for at least 259 days. During that time the estimated underground price was around $0-$5k. The vulnerability scanner Nessus provides a plugin with the ID 111535 (Debian DSA-4262-1 : symfony - security update), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Debian 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 2.7.38, 2.8.31, 3.2.14, 3.3.13, 3.4-BETA5 or 4.0-BETA5 eliminates this vulnerability. A possible mitigation has been published even before and not after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (111535) and SecurityFocus (BID 104943†). The entries VDB-96595, VDB-111332, VDB-119487 and VDB-119502 are pretty similar. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
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CVSSv3info

VulDB Meta Base Score: 5.7
VulDB Meta Temp Score: 5.6

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Path traversal
CWE: CWE-22
CAPEC: 🔍
ATT&CK: 🔍

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 111535
Nessus Name: Debian DSA-4262-1 : symfony - security update
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 2.7.38/2.8.31/3.2.14/3.3.13/3.4-BETA5/4.0-BETA5
Patch: github.com

Timelineinfo

11/06/2017 🔍
11/17/2017 +10 days 🔍
08/02/2018 +258 days 🔍
08/03/2018 +1 days 🔍
08/06/2018 +2 days 🔍
08/06/2018 +0 days 🔍
08/06/2018 +0 days 🔍
08/07/2018 +1 days 🔍
05/01/2023 +1728 days 🔍

Sourcesinfo

Advisory: DLA 1707-1
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2017-16654 (🔍)
GCVE (CVE): GCVE-0-2017-16654
GCVE (VulDB): GCVE-100-122652

OVAL: 🔍

SecurityFocus: 104943 - Symfony CVE-2018-14773 Security Bypass Vulnerability

See also: 🔍

Entryinfo

Created: 08/07/2018 07:16 AM
Updated: 05/01/2023 08:23 AM
Changes: 08/07/2018 07:16 AM (75), 03/13/2020 04:35 PM (4), 05/01/2023 08:23 AM (5)
Complete: 🔍
Cache ID: 18:65A:40

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