A path traversal vulnerability in the Juniper Networks SRX and vSRX Series may allow an authenticated J-web user to read sensitive system files. This issue affects Juniper Networks Junos OS on SRX and vSRX Series: 19.3 versions prior to 19.3R2-S6, 19.3R3-S1; 19.4 versions prior to 19.4R2-S4, 19.4R3; 20.1 versions prior to 20.1R1-S4, 20.1R2; 20.2 versions prior to 20.2R1-S3, 20.2R2; This issue does not affect Juniper Networks Junos OS versions prior to 19.3R1.
Published 2021-04-22 20:15:09
Updated 2021-04-27 16:55:24
View at NVD,   CVE.org
Vulnerability category: Directory traversal

Products affected by CVE-2021-0231

Exploit prediction scoring system (EPSS) score for CVE-2021-0231

0.09%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 39 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-0231

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.8
MEDIUM AV:N/AC:L/Au:S/C:C/I:N/A:N
8.0
6.9
NIST
6.5
MEDIUM CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
2.8
3.6
Juniper Networks, Inc.

CWE ids for CVE-2021-0231

  • The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.
    Assigned by:
    • nvd@nist.gov (Primary)
    • sirt@juniper.net (Secondary)

References for CVE-2021-0231

  • https://kb.juniper.net/JSA11126
    2021-04 Security Bulletin: Junos OS: SRX Series: J-Web Path traversal vulnerability in SRX Series leads to information disclosure. (CVE-2021-0231) - Juniper Networks
    Vendor Advisory
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