Juniper Junos OS EX Series Missing Authentication for Critical Function Vulnerability

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

83.5%likelihood of exploitation, next 30 days

100%of all CVEs are less likely

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Juniper Junos OS on EX 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 installAppPackage.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-2023-36847

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