VDB-123656 · CVE-2018-1000773 · BID 105306

WordPress up to 4.9.8 Thumbnail input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.5$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in WordPress. Impacted is an unknown function of the component Thumbnail Handler. Such manipulation leads to input validation. This vulnerability is documented as CVE-2018-1000773. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in WordPress (Content Management System) and classified as critical. Affected by this issue is an unknown functionality of the component Thumbnail Handler. The manipulation with an unknown input leads to a input validation vulnerability. Using CWE to declare the problem leads to CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. Impacted is confidentiality, integrity, and availability. CVE summarizes:

WordPress version 4.9.8 and earlier contains a CWE-20 Input Validation vulnerability in thumbnail processing that can result in remote code execution due to an incomplete fix for CVE-2017-1000600. This attack appears to be exploitable via thumbnail upload by an authenticated user and may require additional plugins in order to be exploited however this has not been confirmed at this time.

The bug was discovered 08/20/2018. The weakness was released 09/06/2018 by Sam Thomas (arma) (Website). The advisory is shared for download at securityfocus.com. This vulnerability is handled as CVE-2018-1000773 since 09/06/2018. The attack may be launched remotely. The successful exploitation needs a simple authentication. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 06/07/2020).

The vulnerability was handled as a non-public zero-day exploit for at least 17 days. During that time the estimated underground price was around $5k-$25k.

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 SecurityFocus (BID 105306†). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.6

VulDB Base Score: 6.3
VulDB Temp Score: 6.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
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: Input validation
CWE: CWE-20
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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

08/20/2018 🔍
08/20/2018 +0 days 🔍
09/06/2018 +16 days 🔍
09/06/2018 +0 days 🔍
09/06/2018 +0 days 🔍
09/06/2018 +0 days 🔍
06/07/2020 +640 days 🔍

Sourcesinfo

Product: wordpress.com

Advisory: securityfocus.com⛔
Researcher: Sam Thomas (arma)
Status: Not defined

CVE: CVE-2018-1000773 (🔍)
GCVE (CVE): GCVE-0-2018-1000773
GCVE (VulDB): GCVE-100-123656
SecurityFocus: 105306 - WordPress CVE-2018-1000773 Incomplete Fix Arbitrary File Upload Vulnerability

Entryinfo

Created: 09/06/2018 20:47
Updated: 06/07/2020 20:18
Changes: 09/06/2018 20:47 (62), 06/07/2020 20:18 (1)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

Discussion

 UnhappyBite (+0)
7 years ago
Thanks. This was helpful!

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