192 matches found
Do Not Install Insecure SNMP Versions
Simple Network Management Protocol SNMP is a standard protocol designed to manage network nodes in IP networks. This protocol allows the exchange of network management and control data between network elements NEs. If SNMP is installed in scenarios where SNMP is not required, additional system...
Configure Session Audit Rules
You are advised to audit and monitor the /var/run/utmp, /var/log/wtmp, and /var/log/btmp files. /var/run/utmp records all login events, /var/log/wtmp records all login, logout, shutdown, and restart events, and /var/log/btmp records login failure events. If session audit is not configured,...
Configure the Core Dump Properly
A core dump records the memory status when a program stops abnormally or breaks down. It helps locate faults but may contain sensitive information in the process memory. In some cases, the core dump function needs to be enabled to record problem causes. When enabling the core dump function,...
Do Not Preset authorized_keys for the SSH Service
authorizedkeys specifies the public key of the remote host. You can store the public key in the $HOME/.ssh/authorizedkeys file in the home directory for public key authentication. Then you can directly log in to the system. If authorizedkeys is preset in the system and public and private key...
Ensure That the LD_LIBRARY_PATH Environment Variable Is Correctly Defined
LDLIBRARYPATH is an environmental variable in Linux. When loading a dynamic link library, the program preferentially obtains the library from the path specified by LDLIBRARYPATH. Generally, LDLIBRARYPATH should not be set, because a maliciously set value will make the program link to an incorrect...
Configure Proper Key Algorithms for User Authentication
If the public and private key authentication mode is used, the public and private key algorithms on the client must be restricted to avoid using insecure algorithms that have been phased out in the industry. The recommended security algorithms are sorted by priority as follows. The algorithms hav...
Ensure That the Drive Space Threshold Is Correct
If the drive space is fully occupied by auditd logs, services may fail to be executed. Therefore, set related configuration items in advance to prevent serious system issues caused by low drive space. The following items in the /etc/audit/auditd.conf file have been configured with default values ...
Ensure That a User Is Locked After a Specified Number of Login Failures
If a user fails to log in to the system for a specified number of consecutive times, the system locks the user. That is, the user is not allowed to log in to the system for a specified period of time to prevent malicious system password cracking. During the lockout period, any input is considered...
Do Not Enable Login Capabilities for Users Who Are Not Meant for Direct Login
Typically, a Linux system has multiple users, not all of which are used for login. For instance, some users are automatically created during the installation of software packages like systemd and dhcp. These users serve specific purposes, such as running related software services. It is essential...
Configure the chronyd Service Properly
If the time server is incorrectly configured, the time of the local server may be inconsistent with that of other servers or the standard time. If time is incorrect, services that strongly depend on time synchronization, such as market transactions, may be interrupted, and attackers may exploit t...
Ensure That the Log Size Limit Is Correct
The size of an audit log file must be limited. The log rotation mechanism can be used to create new log files once the file size limit is reached. If the upper limit is too high, the size of a single log file may be too large, which is inconvenient for management. If the upper limit is too low, t...
Configure Audit Rules for SELinux
SELinux is a mandatory access control function component of Linux. It is used to implement fine-grained permission control on processes and files. You are advised to audit configurations of SELinux configuration files and policy files and record modification logs. If SELinux audit is not...
Configure Audit Rules for Privilege Escalation Operations
In openEuler, logs of privilege escalation operations using the sudo command are recorded in the /var/log/secure file by default. This file also records other authentication-related security logs. If you want to audit privilege escalation operations using sudo, you are advised to record logs...
Azure Linux 3.0 Security Update: giflib (CVE-2025-31344)
The version of giflib installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-31344 advisory. - Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux. This vulnerability is associated with...
AZL-60261 CVE-2025-31344 affecting package giflib for versions less than 5.2.1-10
Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux. This vulnerability is associated with program files gif2rgb.C. This issue affects giflib: through 5.2.2...
CVE-2025-31344
Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux. This vulnerability is associated with program files gif2rgb.C. This issue affects giflib: through 5.2.2...
CVE-2025-31344
Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux. This vulnerability is associated with program files gif2rgb.C. This issue affects giflib: through 5.2.2...
AZL-60246 CVE-2025-31344 affecting package giflib for versions less than 5.2.1-9
Heap-based Buffer Overflow vulnerability in openEuler giflib on Linux. This vulnerability is associated with program files gif2rgb.C. This issue affects giflib: through 5.2.2...