A memory leak flaw was found in Golang in the RSA encrypting/decrypting code, which might lead to a resource exhaustion vulnerability using attacker-controlled inputs​

Overview

A memory leak flaw was found in Golang in the RSA encrypting/decrypting code, which might lead to a resource exhaustion vulnerability using attacker-controlled inputs​. The memory leak happens in github.com/golang-fips/openssl/openssl/rsa.go#L113. The objects leaked are pkey​ and ctx​. That function uses named return parameters to free pkey​ and ctx​ if there is an error initializing the context or setting the different properties. All return statements related to error cases follow the "return nil, nil, fail(...)" pattern, meaning that pkey​ and ctx​ will be nil inside the deferred function that should free them.

Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

Package advisory (CVE-2024-1394)

Affected packages:

• github.com/golang-fips/go <= 1.22.1
• github.com/golang-fips/openssl/v2 < 2.0.1
• github.com/microsoft/go-crypto-openssl <= 0.2.8
• github.com/microsoft/go-crypto-openssl/openssl < 0.2.9

Patched in:

• github.com/golang-fips/openssl/v2 2.0.1
• github.com/microsoft/go-crypto-openssl/openssl 0.2.9

Source: https://osv.dev/vulnerability/GHSA-78hx-gp6g-7mj6