漏洞信息
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Vulnerability Title
Rocq Prover 8.20 before 9.2.0 Guard Checker Accepts Non-Terminating Fixpoint via Unchecked Cross-Calls
Vulnerability Description
The guard checker in Rocq Prover treats a parameter of a nested mutual fixpoint as uniform without examining calls between the different bodies of that fixpoint. find_uniform_parameters in kernel/inductive.ml inspects only self-recursive calls, so when no body calls itself the function concludes that every parameter is uniform. A parameter that grows through a cross-call from one body to another therefore keeps the subterm specification it inherited from the enclosing fixpoint, and a recursive call guarded by that specification is accepted although the argument is not structurally smaller. A non-terminating definition is admitted as structurally decreasing, which yields a term whose value equals its own successor and so a proof of False, from which any proposition follows. The proof requires no axioms, plugins or unsafe flags and Print Assumptions reports it as closed under the global context. Introduced in Coq 8.20 and fixed in Rocq 9.2.0.
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N
Vulnerability Type
控制流实现总是不正确
Vulnerability Title
Rocq Prover 处理逻辑错误漏洞
Vulnerability Description
Rocq Prover是Rocq Prover组织的一个形式化证明辅助软件。 Rocq Prover 8.20版本至9.2.0之前版本存在处理逻辑错误漏洞,该漏洞源于guard checker在处理嵌套互递归fixpoint时未检查不同主体之间的调用,将参数错误视为uniform,导致非终止定义被接受为结构递减,可能使攻击者证明任意命题。
CVSS Information
N/A
Vulnerability Type
N/A