UBUNTU-CVE-2020-28021

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. An authenticated remote SMTP client can insert newline characters into a spool file which indirectly leads to remote code execution as root via AUTH= in a MAIL FROM command...

UBUNTU-CVE-2020-28012

Exim 4 before 4.94.2 allows Exposure of File Descriptor to Unintended Control Sphere because rdainterpret uses a privileged pipe that lacks a close-on-exec flag...

UBUNTU-CVE-2020-28018

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

UBUNTU-CVE-2020-28023

Exim 4 before 4.94.2 allows Out-of-bounds Read. smtpsetupmsg may disclose sensitive information from process memory to an unauthenticated SMTP client...

UBUNTU-CVE-2020-28008

Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. Because Exim operates as root in the spool directory owned by a non-root user, an attacker can write to a /var/spool/exim4/input spool header file, in which a crafted recipient address can indirectly lead to command execution...

UBUNTU-CVE-2020-28015

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters. Local users can alter the behavior of root processes because a recipient address can have a newline character...

UBUNTU-CVE-2020-28014

Exim 4 before 4.94.2 allows Execution with Unnecessary Privileges. The -oP option is available to the exim user, and allows a denial of service because root-owned files can be overwritten...

UBUNTU-CVE-2020-28019

Exim 4 before 4.94.2 has Improper Initialization that can lead to recursion-based stack consumption or other consequences. This occurs because use of certain getc functions is mishandled when a client uses BDAT instead of DATA...

UBUNTU-CVE-2020-28026

Exim 4 before 4.94.2 has Improper Neutralization of Line Delimiters, relevant in non-default configurations that enable Delivery Status Notification DSN. Certain uses of ORCPT= can place a newline into a spool header file, and indirectly allow unauthenticated remote attackers to execute arbitrary...

UBUNTU-CVE-2020-28009

Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow because getstdinput allows unbounded reads that are accompanied by unbounded increases in a certain size variable. NOTE: exploitation may be impractical because of the execution time needed to overflow multiple days...

UBUNTU-CVE-2020-28017

Exim 4 before 4.94.2 allows Integer Overflow to Buffer Overflow in receiveaddrecipient via an e-mail message with fifty million recipients. NOTE: remote exploitation may be difficult because of resource consumption...

Exim 安全漏洞

Exim was developed at Cambridge University as a Message Transfer Agent MTA for Unix systems connected to the Internet. Exim has a security vulnerability. An attacker can exploit the vulnerability by authenticating a remote SMTP client to insert line breaks into a fake offline file via AUTH= in th...

Vulnerabilities fixed in Exim

Vulnerabilities have been fixed in Exim. Collectively, these vulnerabilities named "21nails." The vulnerabilities allow a malicious person to perform attacks that lead to the following categories of damage: Denial-of-Service DoS Remote code execution Administrator/Root rights Remote code executio...

Exim 缓冲区错误漏洞

Exim was developed at Cambridge University as a Message Transfer Agent MTA for Unix systems connected to the Internet. A heap buffer overflow vulnerability exists in Exim in parsefixphrase, which stems from interpreting negative sizes in strncpy, and can be exploited by an attacker to elevate...

Exim 安全漏洞

Exim is an open source messaging agent MTA running on Unix systems that routes, forwards and delivers mail. A security vulnerability exists in exim4 Debian package that stems from insufficient validation of user-supplied input in the spoolreadheader function. The following products and versions a...

Exim 权限许可和访问控制问题漏洞

Exim is an open source messaging agent MTA that runs on Unix systems and is responsible for routing, forwarding and delivering mail. Exim suffers from a privilege-permission and access-control issue vulnerability that stems from an insecure way in which the application uses a PID file. A local us...

Exim 后置链接漏洞

Exim is an open source messaging agent MTA running on Unix systems that routes, forwards and delivers mail. Exim suffers from a security vulnerability that exists as a result of the following issue with symbolic links in the Exim log directory. An attacker can exploit the vulnerability to overwri...

Exim 输入验证错误漏洞

Exim is an open source messaging agent MTA that runs on Unix systems and is responsible for routing, forwarding, and delivering mail. Exim suffers from an input validation error vulnerability that stems from an integer overflow in the receive msg function. A remote attacker could use this...

Exim Input Validation Error Vulnerability

Exim is an open source messaging agent MTA running on Unix systems that routes, forwards and delivers mail. An input validation error vulnerability exists in Exim versions 4.87 through 4.91. The vulnerability stems from a network system or product that does not properly validate incoming data. No...

Exim buffer overflow vulnerability (CNVD-2020-34994)

Exim is an open source messaging agent MTA running on Unix systems that routes, forwards and delivers mail. A buffer overflow vulnerability exists in SPA authenticator in Exim 4.93 and earlier versions. An attacker could exploit this vulnerability to bypass authentication...