CVE-2015-2282 in NetWeaver
Summary
by MITRE
Stack-based buffer overflow in the LZC decompression implementation (CsObjectInt::CsDecomprLZC function in vpa106cslzc.cpp) in SAP MaxDB 7.5 and 7.6, Netweaver Application Server ABAP, Netweaver Application Server Java, Netweaver RFC SDK, GUI, RFC SDK, SAPCAR archive tool, and other products allows context-dependent attackers to cause a denial of service (crash) or possibly execute arbitrary code via unspecified vectors, aka SAP Security Note 2124806, 2121661, 2127995, and 2125316.
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Analysis
by VulDB Data Team • 05/17/2022
The vulnerability CVE-2015-2282 represents a critical stack-based buffer overflow affecting SAP MaxDB and multiple Netweaver components, specifically within the CsObjectInt::CsDecomprLZC function located in vpa106cslzc.cpp. This flaw exists in SAP MaxDB versions 7.5 and 7.6, along with various Netweaver Application Server ABAP, Java, RFC SDK, GUI, and SAPCAR archive tool implementations. The vulnerability stems from inadequate input validation during LZC (Lempel-Ziv Compression) decompression operations, creating a condition where maliciously crafted compressed data can overwrite adjacent stack memory regions.
The technical exploitation of this vulnerability occurs when the decompression function processes malformed compressed data without proper bounds checking. The stack-based buffer overflow manifests as an excessive memory write operation that overflows the allocated stack buffer, potentially corrupting adjacent memory locations including return addresses, local variables, and function parameters. This type of vulnerability maps directly to CWE-121 Stack-based Buffer Overflow, which is classified as a critical weakness in the Common Weakness Enumeration catalog. The attack vector requires context-dependent conditions where an attacker can influence the compressed data input, making it particularly dangerous in environments where external data processing occurs.
The operational impact of this vulnerability extends beyond simple denial of service to potentially enable arbitrary code execution, making it a severe threat to SAP system integrity. When exploited successfully, the buffer overflow can cause application crashes, system instability, and in some cases allow remote attackers to execute malicious code with the privileges of the affected process. The vulnerability affects multiple SAP products and components, amplifying its potential impact across enterprise environments that rely on SAP infrastructure. The affected systems include not only the core database but also various application server components and tools that utilize the same decompression library, creating a widespread attack surface that can compromise entire SAP ecosystems.
Organizations should implement immediate mitigations including applying the relevant SAP security notes 2124806, 2121661, 2127995, and 2125316 which contain the necessary patches and fixes for this vulnerability. Network segmentation and input validation controls should be strengthened to prevent unauthorized data injection into decompression functions. The vulnerability aligns with ATT&CK technique T1059.007 for Command and Scripting Interpreter and T1499.004 for Endpoint Denial of Service, indicating both execution and denial of service attack capabilities. Regular security assessments and vulnerability scanning should be conducted to identify systems running affected versions, while monitoring for suspicious decompression activities can help detect potential exploitation attempts. The vulnerability demonstrates the importance of proper input validation and memory safety practices in enterprise software development, particularly for compression and decompression algorithms that handle untrusted data inputs.