Juniper Junos OS SRX Series Missing Authentication for Critical Function Vulnerability

Exploited in the wild. Listed by CISA on 2023-11-13; known to be used by ransomware.

1.1%likelihood of exploitation, next 30 days

67%of all CVEs are less likely

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Juniper Junos OS on SRX Series contains a missing authentication for critical function vulnerability that allows an unauthenticated, network-based attacker to cause limited impact to the file system integrity. With a specific request to webauth_operation.php that doesn't require authentication, an attacker is able to upload arbitrary files via J-Web, leading to a loss of integrity for a certain part of the file system, which may allow chaining to other vulnerabilities.

No ready check is stored for this CVE. Confirm it by hand from the references.

References

https://nvd.nist.gov/vuln/detail/CVE-2023-36851

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