Red Hat Security Advisory: Red Hat Advanced Cluster Management 2.3.3 bug fix, security, and image updates

Important

A flaw was found in the object-path nodejs library when the del() function is called to validate object properties. An attacker can manipulate or alter the prototype of an object causing the modification of default properties on all objects. This could lead into a service disruption or a denial of service attack (DoS).

CWE-915 - Improperly Controlled Modification of Dynamically-Determined Object Attributes

A flaw was found in nginx. An off-by-one error while processing DNS responses allows a network attacker to write a dot character out of bounds in a heap allocated buffer which can allow overwriting the least significant byte of next heap chunk metadata likely leading to a remote code execution in certain circumstances. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

CWE-193 - Off-by-one Error

Prototype pollution has been discovered in object-path NodeJS library. A type confusion vulnerability can lead to a bypass of CVE-2020-15256 when the path components used in the path parameter are arrays. In particular, the condition currentPath === '__proto__' returns false if currentPath is ['__proto__']. This is because the === operator returns always false when the type of the operands is different.

CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')

A heap buffer overflow was found in redis. Specially crafted Lua scripts executing in Redis cause the heap-based Lua stack to overflow due to incomplete checks for this condition. This flaw allows a remote attacker to corrupt the heap and potentially trigger remote code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CWE-787 - Out-of-bounds Write

An integer overflow issue was found in redis. The vulnerability involves changing the default "proto-max-bulk-len" and "client-query-buffer-limit" configuration parameters to very large values and constructing specially crafted large stream elements. This flaw allows a remote attacker to corrupt the heap and potentially trigger remote code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CWE-190 - Integer Overflow or Wraparound

An integer overflow issue was found in the redis ziplist data structure. The vulnerability involves modifying the default ziplist configuration parameters (hash-max-ziplist-entries, hash-max-ziplist-value, zset-max-ziplist-entries or zset-max-ziplist-value) to a very large value, and then constructing specially crafted commands to create very large ziplists. This flaw allows a remote attacker to corrupt the heap and potentially trigger remote code execution. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.

CWE-787 - Out-of-bounds Write

A flaw was found in redis. When using the Redis Lua Debugger, users can send malformed requests that cause the debugger’s protocol parser to read data beyond the actual buffer, potentially leading to an information disclosure.

CWE-125 - Out-of-bounds Read