Relevanssi Plugin 4.0.4 lib/interface.php tab cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.6$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Relevanssi Plugin 4.0.4. Affected by this issue is some unknown functionality in the library lib/interface.php. Such manipulation of the argument tab as part of GET Parameter leads to cross site scripting. This vulnerability is referenced as CVE-2018-9034. It is possible to launch the attack remotely. Furthermore, an exploit is available.

Detailsinfo

A vulnerability was found in Relevanssi Plugin 4.0.4. It has been rated as problematic. Affected by this issue is an unknown code block in the library lib/interface.php. The manipulation of the argument tab as part of a GET Parameter leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. CVE summarizes:

Cross-site scripting (XSS) vulnerability in lib/interface.php of the Relevanssi plugin 4.0.4 for WordPress allows remote attackers to inject arbitrary JavaScript or HTML via the tab GET parameter.

The bug was discovered 03/30/2018. The weakness was published 04/04/2018 (Website). The advisory is shared for download at exploit-db.com. This vulnerability is handled as CVE-2018-9034 since 03/26/2018. The attack may be launched remotely. The requirement for exploitation is a simple authentication. Technical details as well as a public exploit are known. The MITRE ATT&CK project declares the attack technique as T1059.007.

The exploit is available at exploit-db.com. It is declared as proof-of-concept. The vulnerability was handled as a non-public zero-day exploit for at least 5 days. During that time the estimated underground price was around $0-$5k. By approaching the search of inurl:lib/interface.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at Exploit-DB (44366). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 4.8
VulDB Meta Temp Score: 4.6

VulDB Base Score: 4.3
VulDB Temp Score: 3.9
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 5.4
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: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Proof-of-Concept
Download: 🔍
Google Hack: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Exploit-DB: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/26/2018 🔍
03/30/2018 +4 days 🔍
04/04/2018 +5 days 🔍
04/04/2018 +0 days 🔍
04/05/2018 +1 days 🔍
08/24/2025 +2698 days 🔍

Sourcesinfo

Advisory: exploit-db.com
Status: Not defined

CVE: CVE-2018-9034 (🔍)
GCVE (CVE): GCVE-0-2018-9034
GCVE (VulDB): GCVE-100-115820
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 04/05/2018 08:49
Updated: 08/24/2025 23:11
Changes: 04/05/2018 08:49 (58), 01/22/2020 11:10 (4), 08/24/2025 23:11 (18)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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