OpenSSL BIO_dumpattr 空指针解引用漏洞分析

漏洞概述 该漏洞涉及 OpenSSL 库中的 函数，具体是在处理 类型时，如果属性值为空（NULL），会导致空指针解引用，从而可能引发程序崩溃或执行任意代码。 影响范围 受影响版本：OpenSSL 1.0.2.3-6.0 触发条件：当 函数接收到一个空的 属性时，会尝试访问该属性的长度，导致空指针解引用。 修复方案 1. 增加空指针检查：在处理 属性之前，先检查其是否为空。 2. 调整缓冲区大小：确保缓冲区大小至少为 ，以避免缓冲区溢出。 3. 更新测试用例：添加新的测试用例来验证修复的有效性。 POC代码 ```perl POC code for the vulnerability my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sattr = $sh->eval( 'PKCS12->info_as_hash($Password1)' ); my $sat

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OpenSSL BIO_dumpattr 空指针解引用漏洞分析

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目标达成 感谢每一位支持者 — 我们达成了 100% 目标！

OpenSSL BIO_dumpattr 空指针解引用漏洞分析

同源更多文章

目标达成感谢每一位支持者 — 我们达成了 100% 目标！