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Cybersecurity researchers today disclosed details of a memory vulnerability in IBM’s Db2 family of data management products that could potentially allow a local attacker to access sensitive data and even cause a denial of service attacks.

The flaw (CVE-2020-4414), which impacts IBM Db2 V9.7, V10.1, V10.5, V11.1, and V11.5 editions on all platforms, is caused by improper usage shared memory, thereby granting a bad actor to perform unauthorised actions on the system.

By sending a specially crafted request, an attacker could exploit this vulnerability to obtain sensitive information or cause a denial of service, according to Trustwave SpiderLabs security and research team, which discovered the issue.

“Developers forgot to put explicit memory protections around the shared memory used by the Db2 trace facility,” SpiderLabs’s Martin Rakhmanov said. “This allows any local users read and write access to that memory area. In turn, this allows accessing critically sensitive data as well as the ability to change how the trace subsystem functions, resulting in a denial of service condition in the database.”

IBM released a patch on June 30 to remediate the vulnerability.

images from Hacker News