CVE-2020-28018: CVE-2020-28018

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I. Basic Information for CVE-2020-28018

Vulnerability Information

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Vulnerability Title

N/A

Source: NVD (National Vulnerability Database)

Vulnerability Description

Exim 4 before 4.94.2 allows Use After Free in smtp_reset in certain situations that may be common for builds with OpenSSL.

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

Exim 资源管理错误漏洞

Source: CNNVD (China National Vulnerability Database)

Vulnerability Description

OpenSSL是Openssl团队的一个开源的能够实现安全套接层（SSLv2/v3）和安全传输层（TLSv1）协议的通用加密库。该产品支持多种加密算法，包括对称密码、哈希算法、安全散列算法等。Exim是一个运行于Unix系统中的开源消息传送代理（MTA），它主要负责邮件的路由、转发和投递。 Exim 存在资源管理错误漏洞，该漏洞源于在tls-openssl.c中出现了释放内存后再使用的错误。

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-2020-28018

#	POC Description	Source Link	Shenlong Link
1	exim use after free exploit and detection	https://github.com/dorkerdevil/CVE-2020-28018	POC Details
2	Exploit for Exim4 4.93 CVE-2020-28018	https://github.com/zr0tt/CVE-2020-28018	POC Details

AI-Generated POCPremium

No public POC found.

III. Intelligence Information for CVE-2020-28018

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https://www.exim.org/static/doc/security/CVE-2020-qualys/CVE-2020-28018-OCORK.txtx_refsource_MISC
http://www.openwall.com/lists/oss-security/2021/05/11/5mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/12/3mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/11/14mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/12/2mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/11/15mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/11/6mailing-listx_refsource_MLIST
http://www.openwall.com/lists/oss-security/2021/05/11/17mailing-listx_refsource_MLIST
https://nvd.nist.gov/vuln/detail/CVE-2020-28018

IV. Related Vulnerabilities

Same product: n/a

Same vendor: n/a

V. Comments for CVE-2020-28018

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I. Basic Information for CVE-2020-28018

Vulnerability Information

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Vulnerability Title

Vulnerability Description

CVSS Information

Vulnerability Type

Affected Products

II. Public POCs for CVE-2020-28018

III. Intelligence Information for CVE-2020-28018

IV. Related Vulnerabilities

V. Comments for CVE-2020-28018

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