摘要:
exim security update
安全等级: Medium
公告ID: KylinSec-SA-2024-5015
发布日期: 2024年8月2日
关联CVE: CVE-2023-51766
Exim is a message transfer agent (MTA) developed at the University of Cambridge for use on Unix systems connected to the Internet. It is freely available under the terms of the GNU General Public Licence. In style it is similar to Smail 3, but its facilities are more general. There is a great deal of flexibility in the way mail can be routed, and there are extensive facilities for checking incoming mail. Exim can be installed in place of sendmail, although the configuration of exim is quite different to that of sendmail.
Security Fix(es):
Exim before 4.97.1 allows SMTP smuggling in certain PIPELINING/CHUNKING configurations. Remote attackers can use a published exploitation technique to inject e-mail messages with a spoofed MAIL FROM address, allowing bypass of an SPF protection mechanism. This occurs because Exim supports <LF>.<CR><LF> but some other popular e-mail servers do not.(CVE-2023-51766)
| cve名称 | 产品 | 组件 | 是否受影响 |
|---|---|---|---|
| CVE-2023-51766 | V6 | exim | Fixed |
| 软件名称 | 架构 | 版本号 |
|---|---|---|
| exim-greylist | x86_64 | 4.97.1-2.ks6.kb1 |
| exim-clamav | x86_64 | 4.97.1-2.ks6.kb1 |
| exim-pgsql | x86_64 | 4.97.1-2.ks6.kb1 |
| exim-mysql | x86_64 | 4.97.1-2.ks6.kb1 |
| exim-mon | x86_64 | 4.97.1-2.ks6.kb1 |
| exim | x86_64 | 4.97.1-2.ks6.kb1 |
| exim | aarch64 | 4.97.1-2.ks6.kb1 |
| exim-greylist | aarch64 | 4.97.1-2.ks6.kb1 |
| exim-mysql | aarch64 | 4.97.1-2.ks6.kb1 |
| exim-mon | aarch64 | 4.97.1-2.ks6.kb1 |
| exim-pgsql | aarch64 | 4.97.1-2.ks6.kb1 |
| exim-clamav | aarch64 | 4.97.1-2.ks6.kb1 |
方法一：下载安装包进行升级安装
1、通过下载链接下载需要升级的升级包保存，如 xxx.rpm
2、通过rpm命令升级，如 rpm -Uvh xxx.rpm
方法二：通过软件源进行升级安装
1、保持能够连接上互联网
2、通过yum命令升级指定的包，如 yum install 包名
