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CVE-2021-22945

Quick assessment

Affected
n/a https://github.com/curl/curl
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.

HAXX Haxx libcurl是瑞典HAXX公司的一个免费、开源的客户端URL传输库。该库支持FTP、FTPS、TFTP、HTTP等。 Haxx libcurl 存在资源管理错误漏洞，该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。

AI Predicted 8.8 Difficulty: Moderate EPSS 6.68% · P94

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution
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I. Basic Information for CVE-2021-22945

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
When sending data to an MQTT server, libcurl <= 7.73.0 and 7.78.0 could in some circumstances erroneously keep a pointer to an already freed memory area and both use that again in a subsequent call to send data and also free it *again*.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
双重释放
Source: CVE Program / CVE List V5
Vulnerability Title
libcurl 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
HAXX Haxx libcurl是瑞典HAXX公司的一个免费、开源的客户端URL传输库。该库支持FTP、FTPS、TFTP、HTTP等。 Haxx libcurl 存在资源管理错误漏洞，该漏洞源于网络系统或产品对系统资源（如内存、磁盘空间、文件等）的管理不当。
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
- https://github.com/curl/curl curl 7.73.0 to and including 7.78.0 -

II. Public POCs for CVE-2021-22945

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III. Intelligence Information for CVE-2021-22945

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Vendor Advisories for CVE-2021-22945 (6)

Mailing List Discussions for CVE-2021-22945 (3)

Other References for CVE-2021-22945 (1)

Same Patch Batch · n/a · 2021-09-23 · 33 CVEs total

CVE-2021-22019 VMware vCenter Server 输入验证错误漏洞
CVE-2020-19951 YzmCMS v5.5/controller/pay.class.php组件 跨站请求伪造漏洞
CVE-2020-19950 YzmCMS 跨站脚本漏洞
CVE-2020-19949 Yzmcms 跨站脚本漏洞
CVE-2020-24327 Discourse 代码问题漏洞
CVE-2021-26794 FrogCMS 代码问题漏洞
CVE-2021-3824 Openvpn OpenVPN 跨站脚本漏洞
CVE-2021-21913 D-LINK DIR-3040 信任管理问题漏洞
CVE-2021-26750 Panda Security Antivirus代码问题漏洞
CVE-2021-22941 Citrix Systems Citrix ShareFile 安全漏洞
CVE-2021-22948 revive-adserver 安全特征问题漏洞
CVE-2021-22953 Concrete CMS 跨站请求伪造漏洞
CVE-2021-22952 UniFi Talk 代码注入漏洞
CVE-2021-22950 Concrete CMS 跨站请求伪造漏洞
CVE-2021-22949 Concrete CMS 跨站请求伪造漏洞
CVE-2021-22020 VMware vCenter Server 输入验证错误漏洞
CVE-2021-22015 VMware vCenter Server 安全漏洞
CVE-2021-22018 VMware vCenter Server权限许可和访问控制问题漏洞
CVE-2021-22017 Vmware VMware vCenter Server 授权问题漏洞
CVE-2021-22016 Vmware VMware vCenter Server 跨站脚本漏洞

Showing top 20 of 33 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: https://github.com/curl/curl
Same vendor: n/a
Same weakness: CWE-415

V. Comments for CVE-2021-22945

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