PoC for Progress Telerik RCE chain released (CVE-2024-4358, CVE-2024-1800)

CVE-2023-34362 is an unauthenticated SQL injection flaw (CWE-89) in Progress MOVEit Transfer that allows an attacker with no credentials to gain unauthorized access to the product's database. It is triggered remotely via crafted input submitted to the MOVEit Transfer web application, with the impact varying by the backend database engine in use (MySQL, Microsoft SQL Server, or Azure SQL). A successful attacker can infer the structure and contents of the database and, depending on the engine, execute SQL statements that alter or delete database elements, exposing data handled by the file-transfer service. Any organization running an internet-reachable MOVEit Transfer instance is affected; public internet-exposure scans around disclosure identified on the order of a few thousand servers, each typically serving enterprise or government user bases. Exploitation is confirmed in the wild: the flaw was added to CISA KEV on 2023-06-02 with known ransomware use and an EPSS exploitation probability of 99.9% (100th percentile), while no public PoC is known.

Do: Apply the vendor's updates immediately, per Progress instructions and CISA's required action. Until patched, restrict internet exposure of MOVEit Transfer and check the backend database for unexpected structure or content changes and deletions. Because in-the-wild exploitation and ransomware use are confirmed, treat any unpatched, internet-facing instance as potentially compromised and review stored transfer data and access logs for anomalies.

In Progress® Telerik® Report Server versions prior to 2024 Q1 (10.0.24.130), a remote code execution attack is possible through an insecure deserialization vulnerability.

CVE-2024-4358 is a critical (CVSS 9.8) authentication bypass by spoofing (CWE-290) in Progress Telerik Report Server 2024 Q1 (10.0.24.305) and earlier when the server is deployed on IIS. The flaw is reachable over the network with no privileges and no user interaction, so a remote, unauthenticated attacker can spoof a valid session to reach Report Server functionality that should require sign-in; public reporting indicates this can be abused to create rogue administrator accounts and take over the instance. Access to restricted functionality and administrative control is the immediate gain, and per a released public proof of concept the bypass can be chained with the CVE-2024-1800 deserialization flaw to achieve unauthenticated remote code execution. Any organization running Telerik Report Server 2024 Q1 or earlier on IIS is affected. Exploitation is confirmed in the wild: CISA added the bug to the KEV catalog on 2024-06-13, and the 97.5% EPSS score (100th percentile) signals a very high likelihood of continued exploitation, though ransomware use is listed as unknown.

Do: Upgrade every Telerik Report Server instance to Progress' fixed release (2024 Q2, 10.0.24.414, or later per the vendor advisory); if prompt patching is not possible, CISA's required action is to apply vendor mitigations or discontinue use of the product. Audit the Users/Administrators list for rogue admin accounts, review IIS logs for unauthenticated requests to restricted endpoints, and inventory for any instances hosted on IIS. If your deployment is also exposed to CVE-2024-1800, patch that as well, since the public PoC chains the two flaws for unauthenticated RCE.