When SAML authentication is enabled, Juniper Networks Mist Cloud UI might incorrectly handle child elements in SAML responses, allowing a remote attacker to modify a valid SAML response without invalidating its cryptographic signature to bypass SAML authentication security controls. This issue affects all Juniper Networks Mist Cloud UI versions prior to September 2 2020.
Published 2020-10-16 21:15:14
Updated 2021-10-19 12:04:46
View at NVD,   CVE.org
Vulnerability category: Input validation

Exploit prediction scoring system (EPSS) score for CVE-2020-1677

0.13%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 47 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-1677

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
4.3
MEDIUM AV:N/AC:M/Au:N/C:N/I:P/A:N
8.6
2.9
NIST
7.2
HIGH CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
3.9
2.7
Juniper Networks, Inc.

CWE ids for CVE-2020-1677

  • 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.
    Assigned by: sirt@juniper.net (Secondary)
  • The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
    Assigned by: nvd@nist.gov (Primary)

References for CVE-2020-1677

Products affected by CVE-2020-1677

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