OpenVM byte decomposition of pc in AUIPC chip can overflow

OpenVM is a performant and modular zkVM framework built for customization and extensibility. In version 1.0.0, OpenVM is vulnerable to overflow through byte decomposition of pc in AUIPC chip. A typo results in the highest limb of pc being range checked to 8-bits instead of 6-bits. This results in the if statement never being triggered because the enumeration gives i=0,1,2, when instead the enumeration should give i=1,2,3, leaving pc_limbs[3] range checked to 8-bits instead of 6-bits. This leads to a vulnerability where the pc_limbs decomposition differs from the true pc, which means a malicious prover can make the destination register take a different value than the AUIPC instruction dictates, by making the decomposition overflow the BabyBear field. This issue has been patched in version 1.1.0.

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缓冲区大小计算不正确

OpenVM 安全漏洞

OpenVM是OpenVM开源的一个为定制和可扩展性而构建的高性能和模块化zkVM框架。 OpenVM 1.0.0版本存在安全漏洞，该漏洞源于AUIPC芯片中pc字节分解溢出，可能导致恶意证明者使目标寄存器取不同值。

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