PharStreamWrapper up to 2.1.0/3.1.0 on TYPO3 Protection Mechanism path traversal

CVSS Meta Temp Score
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CTI Interest Score
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A vulnerability, which was classified as critical, has been found in PharStreamWrapper up to 2.1.0/3.1.0 on TYPO3. Affected by this issue is an unknown code of the component Protection Mechanism. The manipulation with an unknown input leads to a path traversal vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. CVE summarizes:

The PharStreamWrapper (aka phar-stream-wrapper) package 2.x before 2.1.1 and 3.x before 3.1.1 for TYPO3 does not prevent directory traversal, which allows attackers to bypass a deserialization protection mechanism, as demonstrated by a phar:///path/bad.phar/../good.phar URL.

The bug was discovered 05/08/2019. The weakness was released 05/09/2019 by Security Team with Drupal Security Team (Website). The advisory is shared for download at This vulnerability is handled as CVE-2019-11831 since 05/08/2019. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly 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 1 days. During that time the estimated underground price was around $0-$5k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 176940 (Debian Security Update for drupal7 (DLA 1797-1)).

Upgrading to version 2.1.1 or 3.1.1 eliminates this vulnerability.

Entry connected to this vulnerability is available at 133882.




CPE 2.3info

CPE 2.2info


VulDB CVSS-B Score: 🔍
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VulDB Meta Base Score: 8.5
VulDB Meta Temp Score: 8.4

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
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NVD Base Score: 9.8
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Class: Path traversal
ATT&CK: T1006

Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

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Threat Intelligenceinfo

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Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: PharStreamWrapper 2.1.1/3.1.1


04/17/2019 🔍
05/08/2019 +21 days 🔍
05/08/2019 +0 days 🔍
05/09/2019 +1 days 🔍
05/09/2019 +0 days 🔍
09/15/2023 +1590 days 🔍


Advisory: SA_19_22
Researcher: Security Team
Organization: Drupal Security Team
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2019-11831 (🔍)
SecurityFocus: 108023 - JQuery CVE-2019-11358 Cross Site Scripting Vulnerability

See also: 🔍


Created: 05/09/2019 12:54 PM
Updated: 09/15/2023 09:41 AM
Changes: 05/09/2019 12:54 PM (61), 06/08/2020 12:39 PM (7), 09/15/2023 09:41 AM (5)
Complete: 🔍


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