Yii up to 2.0.15.1 CORS Policy Converter Wildcard origin validation
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
5.7 | $0-$5k | 0.03 |
A vulnerability classified as critical has been found in Yii up to 2.0.15.1. This affects an unknown code block of the component CORS Policy Converter. The manipulation as part of a Wildcard leads to a origin validation vulnerability. CWE is classifying the issue as CWE-346. The product does not properly verify that the source of data or communication is valid. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:
Yii 2.x through 2.0.15.1 actively converts a wildcard CORS policy into reflecting an arbitrary Origin header value, which is incompatible with the CORS security design, and could lead to CORS misconfiguration security problems.
The bug was discovered 04/29/2018. The weakness was published 01/28/2019 (Website). It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2018-20745 since 01/28/2019. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. The technical details are unknown and an exploit is not publicly available.
The vulnerability was handled as a non-public zero-day exploit for at least 274 days. During that time the estimated underground price was around $0-$5k.
There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.
Similar entries are available at VDB-114868, VDB-114876, VDB-114877 and VDB-161256.
Product
Name
Version
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 5.7VulDB Meta Temp Score: 5.7
VulDB Base Score: 5.6
VulDB Temp Score: 5.6
VulDB Vector: 🔍
VulDB Reliability: 🔍
NVD Base Score: 5.9
NVD Vector: 🔍
CVSSv2
AV | AC | Au | C | I | A |
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💳 | 💳 | 💳 | 💳 | 💳 | 💳 |
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
unlock | unlock | unlock | unlock | unlock | unlock |
VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
NVD Base Score: 🔍
Exploiting
Class: Origin validationCWE: CWE-346 / CWE-345
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
---|---|---|---|---|
Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: no mitigation knownStatus: 🔍
0-Day Time: 🔍
Timeline
04/29/2018 🔍01/28/2019 🔍
01/28/2019 🔍
01/28/2019 🔍
01/28/2019 🔍
07/03/2023 🔍
Sources
Advisory: 16193Status: Not defined
CVE: CVE-2018-20745 (🔍)
See also: 🔍
Entry
Created: 01/28/2019 16:25Updated: 07/03/2023 14:55
Changes: 01/28/2019 16:25 (56), 05/06/2020 12:04 (1), 07/03/2023 14:55 (3)
Complete: 🔍
Cache ID: 3:D24:103
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