CVE-2019-18840
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I. Basic Information for CVE-2019-18840
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
In wolfSSL 4.1.0 through 4.2.0c, there are missing sanity checks of memory accesses in parsing ASN.1 certificate data while handshaking. Specifically, there is a one-byte heap-based buffer overflow inside the DecodedCert structure in GetName in wolfcrypt/src/asn.c because the domain name location index is mishandled. Because a pointer is overwritten, there is an invalid free.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
wolfSSL 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
wolfSSL（前称CyaSSL）是美国wolfSSL公司的一个针对嵌入式系统开发人员使用的小的、可移植的嵌入式SSL编程库。 wolfSSL 4.1.0版本至4.2.0c版本中的wolfcrypt/src/asn.c文件的GetName的DecodedCert结构存在缓冲区错误漏洞，该漏洞源于程序没有正确处理域名位置的索引。远程攻击者可借助特制证书利用该漏洞在内存重新分配期间导致拒绝服务（崩溃）。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | n/a | n/a | - |
II. Public POCs for CVE-2019-18840
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|---|
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- https://github.com/wolfSSL/wolfssl/issues/2555x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2019-18840
Same Patch Batch · n/a · 2019-11-09 · 5 CVEs total
| CVE-2019-18845 | Patriot Viper RGB 安全漏洞 | |
| CVE-2009-4011 | dtc-xen 竞争条件问题漏洞 | |
| CVE-2009-3552 | RHEV-M VDC 信任管理问题漏洞 | |
| CVE-2009-2802 | MantisBT 跨站脚本漏洞 |
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V. Comments for CVE-2019-18840
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