Insecure deserialization in PharStreamWrapper extension for WordPress



Published: 2019-05-09
Risk High
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-11831
CWE-ID CWE-502
Exploitation vector Network
Public exploit N/A
Vulnerable software
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phar-stream-wrapper
Web applications / Modules and components for CMS

Vendor TYPO3

Security Bulletin

This security bulletin contains one high risk vulnerability.

1) Deserialization of untrusted data

EUVDB-ID: #VU18416

Risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-11831

CWE-ID: CWE-502 - Deserialization of Untrusted Data

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to insecure input validation when processing serialized data passed via phar archives. A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.

Successful exploitation of this vulnerability may result in complete compromise of vulnerable system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

phar-stream-wrapper: 2.0.0 - 3.1.0

External links

http://typo3.org/security/advisory/typo3-psa-2019-007/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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