CVE-2022-27781: CERTINFO never-ending busy-loop
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原文摘录
摘自原文（3173 字符中的一小部分）
Summary: Curl is prone to a DoS attack in case the NSS TLS library is used and the CERTINFO option is enabled. Using maliciously crafted certificates on a server, an attacker can make curl run into an endless loop when connecting to the server. The bug is located in the following code segment …
原文中的代码
/* Count certificates in chain. */
int i = 1;
now = PR_Now();
if(!cert->isRoot) {
cert2 = CERT_FindCertIssuer(cert, now, certUsageSSLCA);
while(cert2) {
i++;
if(cert2->isRoot) {
CERT_DestroyCertificate(cert2);
break;
}
cert3 = CERT_FindCertIssuer(cert2, now, …默认不展示报告全文。以上为简短摘录，完整复现过程请阅读原文。版权归研究员与 curl 所有。
时间线
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阅读 HackerOne 原文 ↗作者 @sybr · 版权归作者与 curl 所有