OCSP_check_nonce

API 概述

OCSP_check_nonce 是 openssl 中的一个API。该规属于return value check 类型。该规则是使用 AURC 生成的。

规则描述

提示

OCSP_check_nonce() returns the result of the nonce comparison between B<req> and B<resp>. The return value indicates the result of the comparison. If nonces are present and equal 1 is returned. If the nonces are absent 2 is returned. If a nonce is present in the response only 3 is returned. If nonces are present and unequal 0 is returned. If the nonce is present in the request only then -1 is returned.

信息

标签：return value check

参数下标：N/A

CWE类别：CWE-253

规则代码

import cpp

class OpenSSLFunctionCall extends FunctionCall {
  OpenSSLFunctionCall() {
    this.getTarget().hasName("OCSP_check_nonce")
  }
}

from OpenSSLFunctionCall call, UnaryOperation uop
where
  uop.getOperator() = "!" and
  uop.getOperand() = call.getAnAccess()
select uop, "This negation checks the return value of OCSP_check_nonce."