Buffer Overflow in libstdc++ Due to Failed Write Operations

Executive Summary

This vulnerability is in libstdc++, where a failed byte-by-byte write during file stream processing can still append data to the internal memory buffer. An attacker who repeatedly causes write failures in a vulnerable service may trigger a buffer overflow, leading to Denial of Service (DoS) or memory corruption.

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Impact Analysis

The impact includes Denial of Service (DoS) or memory corruption in affected services. Exploitation requires an attacker to induce repeated write failures and control character writes, which is difficult in practice. Local attacks are unlikely as no suid applications use the vulnerable pattern.

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