CVE-2021-20314
Quick assessment
Affected
n/a libspf2
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
libspf2是一个库，它允许电子邮件系统（例如 Sendmail、Postfix、Exim、Zmailer 和 MS Exchange）检查SPF 记录并确保电子邮件得到了来自它的域名的授权。这可以防止垃圾邮件发送者、诈骗者和电子邮件病毒/蠕虫常用的电子邮件伪造。 libspf2的SPF 存在安全漏洞，该漏洞源于libspf2的SPF宏可触发缓冲区溢出。攻击者可利用该漏洞造成拒绝服务，并可能运行代码。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-20314
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
Stack buffer overflow in libspf2 versions below 1.2.11 when processing certain SPF macros can lead to Denial of service and potentially code execution via malicious crafted SPF explanation messages.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
libspf2 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
libspf2是一个库，它允许电子邮件系统（例如 Sendmail、Postfix、Exim、Zmailer 和 MS Exchange）检查SPF 记录并确保电子邮件得到了来自它的域名的授权。这可以防止垃圾邮件发送者、诈骗者和电子邮件病毒/蠕虫常用的电子邮件伪造。 libspf2的SPF 存在安全漏洞，该漏洞源于libspf2的SPF宏可触发缓冲区溢出。攻击者可利用该漏洞造成拒绝服务，并可能运行代码。
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 |
|---|---|---|---|---|
| - | libspf2 | 1.2.11 | - |
|
II. Public POCs for CVE-2021-20314
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2021-20314 (2)
-
https://bugzilla.redhat.com/show_bug.cgi?id=1993070 x_refsource_MISC
Mailing List Discussions for CVE-2021-20314 (3)
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CMSFT2NJDZ7PATRZSQPAOGSE7JD6ELOB/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/GFXJRHPE5OSCPTNA3ZZ4ORDHT4JQH3Y4/ vendor-advisory x_refsource_FEDORA
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https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/Y6T4HYXXSUQCGJB2ES6X7Q74YYF7V7XU/ vendor-advisory x_refsource_FEDORA
Same Patch Batch · n/a · 2021-08-12 · 58 CVEs total
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| CVE-2021-38592 | Wasm3 缓冲区错误漏洞 | |
| CVE-2021-37222 | RCDCAP 安全漏洞 | |
| CVE-2020-24576 | Netskope Client 安全漏洞 | |
| CVE-2020-22403 | express-cart 跨站请求伪造漏洞 | |
| CVE-2021-38597 | wolfSSL 数据伪造问题漏洞 | |
| CVE-2021-27790 | Brocade Fabric OS 缓冲区错误漏洞 | |
| CVE-2021-27791 | Brocade Fabric OS 缓冲区错误漏洞 | |
| CVE-2021-35955 | Contao 跨站脚本漏洞 | |
| CVE-2021-27794 | Brocade Fabric OS 授权问题漏洞 | |
| CVE-2020-20977 | UK CMS 跨站脚本漏洞 | |
| CVE-2020-20979 | LJCMS 代码问题漏洞 | |
| CVE-2020-20981 | Metinfo MetInfo SQL注入漏洞 | |
| CVE-2021-38599 | WAL-G 代码问题漏洞 | |
| CVE-2021-38604 | GNU C Library 代码问题漏洞 | |
| CVE-2021-38606 | reNgine 安全特征问题漏洞 | |
| CVE-2020-18445 | YUNUCMS 跨站脚本漏洞 | |
| CVE-2020-18446 | YUNUCMS 跨站脚本漏洞 | |
| CVE-2020-18449 | UKCMS 跨站脚本漏洞 |
Showing top 20 of 58 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-20314
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