Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2021-33912

Quick assessment

Affected
n/a n/a
Exploitation
High exploitation probability; assess promptly
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 存在缓冲区错误漏洞，该漏洞源于libspf2存在基于堆的缓冲区溢出，攻击者可利用该漏洞通过一个特定的SPF DNS记录执行任意代码。

AI Predicted 9.8 Difficulty: Moderate EPSS 9.64% · P95
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2021-33912

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
libspf2 before 1.2.11 has a four-byte heap-based buffer overflow that might allow remote attackers to execute arbitrary code (via an unauthenticated e-mail message from anywhere on the Internet) with a crafted SPF DNS record, because of incorrect sprintf usage in SPF_record_expand_data in spf_expand.c. The vulnerable code may be part of the supply chain of a site's e-mail infrastructure (e.g., with additional configuration, Exim can use libspf2; the Postfix web site links to unofficial patches for use of libspf2 with Postfix; older versions of spfquery relied on libspf2) but most often is not.
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 存在缓冲区错误漏洞，该漏洞源于libspf2存在基于堆的缓冲区溢出，攻击者可利用该漏洞通过一个特定的SPF DNS记录执行任意代码。
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
- n/a n/a -

II. Public POCs for CVE-2021-33912

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2021-33912

请登录查看更多情报信息。

Vendor Advisories for CVE-2021-33912 (1)

Mailing List Discussions for CVE-2021-33912 (1)

Security Blog Posts for CVE-2021-33912 (1)

Other References for CVE-2021-33912 (1)

Same Patch Batch · n/a · 2022-01-19 · 24 CVEs total

CVE-2021-46204 Taocms SQL注入漏洞
CVE-2021-46028 langhsu mblog 跨站请求伪造漏洞
CVE-2021-46026 Mysiteforme 跨站脚本漏洞
CVE-2021-46027 Mysiteforme 跨站请求伪造漏洞
CVE-2021-46025 OneBlog 跨站脚本漏洞
CVE-2022-23045 phpIPAM 跨站脚本漏洞
CVE-2022-23046 phpIPAM SQL注入漏洞
CVE-2021-26247 Cacti 跨站脚本漏洞
CVE-2021-23225 Cacti 跨站脚本漏洞
CVE-2021-3816 Cacti 跨站脚本漏洞
CVE-2021-38789 Allwinner Technology R818 安全漏洞
CVE-2021-44299 Naviwebs Navigate CMS 跨站脚本漏洞
CVE-2021-33913 libspf2 缓冲区错误漏洞
CVE-2021-46203 Taocms 路径遍历漏洞
CVE-2021-38788 Allwinner Technology R818 资源管理错误漏洞
CVE-2021-46030 JavaQuarkBbs 跨站脚本漏洞
CVE-2021-44837 Delta RM 安全漏洞
CVE-2021-45808 Jpress 代码问题漏洞
CVE-2021-38787 Allwinner Technology R818 输入验证错误漏洞
CVE-2021-46104 Webp_Server_Go 路径遍历漏洞

Showing top 20 of 24 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2021-33912

No comments yet

Leave a comment