CVE-2021-28131— Apache Impala 日志信息泄露漏洞

Impala logs contain secrets

Impala sessions use a 16 byte secret to verify that the session is not being hijacked by another user. However, these secrets appear in the Impala logs, therefore Impala users with access to the logs can use another authenticated user's sessions with specially constructed requests. This means the attacker is able to execute statements for which they don't have the necessary privileges otherwise. Impala deployments with Apache Sentry or Apache Ranger authorization enabled may be vulnerable to privilege escalation if an authenticated attacker is able to hijack a session or query from another authenticated user with privileges not assigned to the attacker. Impala deployments with audit logging enabled may be vulnerable to incorrect audit logging as a user could undertake actions that were logged under the name of a different authenticated user. Constructing an attack requires a high degree of technical sophistication and access to the Impala system as an authenticated user. Mitigation: If an Impala deployment uses Apache Sentry, Apache Ranger or audit logging, then users should upgrade to a version of Impala with the fix for IMPALA-10600. The Impala 4.0 release includes this fix. This hides session secrets from the logs to eliminate the risk of any attack using this mechanism. In lieu of an upgrade, restricting access to logs that expose secrets will reduce the risk of an attack. Restricting access to the Impala deployment to trusted users will also reduce the risk of an attack. Log redaction techniques can be used to redact secrets from the logs.

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Apache Impala 日志信息泄露漏洞

Apache Impala是美国阿帕奇（Apache）基金会的一套大规模、分布式并行处理的数据库查询系统。该系统能够查询存储在Hadoop（大数据分析软件）中的HDFS（分布式文件系统）和HBase（数据库）中的PB级大数据。 Apache Impala 存在日志信息泄露漏洞，经过身份验证的攻击者能够劫持另一个经过身份验证的用户的会话或查询。

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