CVE-2020-4433

Vulnerability

A stack-based buffer overflow exists in certain IBM Aspera applications due to improper bounds checking [1]. The vulnerability affects IBM Aspera applications as described in the security bulletin; specific product versions requiring a fix are listed in the vendor advisory [1]. The overflow can be triggered remotely by an attacker with intimate knowledge of the server and valid authentication [1].

Exploitation

Exploitation requires the attacker to have intimate knowledge of the target server and valid authentication credentials [1]. The attack is performed over the network by sending specially crafted input to the affected service, which causes a buffer overflow on the stack [1]. The attacker must know the specific configuration and service parameters to successfully exploit the vulnerability [1].

Impact

A successful exploit allows the attacker to execute arbitrary code on the system with root privileges, or cause the server to crash (denial of service) [1]. This leads to a complete compromise of confidentiality, integrity, and availability of the affected system [1].

Mitigation

IBM has released fixed versions for the affected Aspera applications, as detailed in the security bulletin [1]. Users should apply the latest patches from IBM to remediate this vulnerability [1]. No workarounds are provided in the available references [1].