Avoid calls to 'buffer' with 'noAssert' flag set

Docs > Code Analysis > Static Analysis Rules > Avoid calls to 'buffer' with 'noAssert' flag set

Metadata

ID: typescript-node-security/detect-buffer-noassert

Language: TypeScript

Severity: Error

Category: Security

Description

Avoid calls to buffer with noAssert. If you skip the offset validation it can go beyond the end of the Buffer.

Non-Compliant Code Examples

a.readUInt8(0, true)
a.readUInt16LE(0, true)
a.readUInt16BE(0, true)
a.readUInt32LE(0, true)
a.readUInt32BE(0, true)
a.readInt8(0, true)
a.readInt16LE(0, true)
a.readInt16BE(0, true)
a.readInt32LE(0, true)
a.readInt32BE(0, true)
a.readFloatLE(0, true)
a.readFloatBE(0, true)
a.readDoubleLE(0, true)
a.readDoubleBE(0, true)
a.writeUInt8(0, 0, true)
a.writeUInt16LE(0, 0, true)
a.writeUInt16BE(0, 0, true)
a.writeUInt32LE(0, 0, true)
a.writeUInt32BE(0, 0, true)
a.writeInt8(0, 0, true)
a.writeInt16LE(0, 0, true)
a.writeInt16BE(0, 0, true)
a.writeInt32LE(0, 0, true)
a.writeInt32BE(0, 0, true)
a.writeFloatLE(0, 0, true)
a.writeFloatBE(0, 0, true)
a.writeDoubleLE(0, 0, true)
a.writeDoubleBE(0, 0, true)

Compliant Code Examples

a.readUInt8(0)
a.readUInt16LE(0)
a.readUInt16BE(0)
a.readUInt32LE(0)
a.readUInt32BE(0)
a.readInt8(0)
a.readInt16LE(0)
a.readInt16BE(0)
a.readInt32LE(0)
a.readInt32BE(0)
a.readFloatLE(0)
a.readFloatBE(0)
a.readDoubleLE(0)
a.readDoubleBE(0)
a.writeUInt8(0)
a.writeUInt16LE(0)
a.writeUInt16BE(0)
a.writeUInt32LE(0)
a.writeUInt32BE(0)
a.writeInt8(0)
a.writeInt16LE(0)
a.writeInt16BE(0)
a.writeInt32LE(0)
a.writeInt32BE(0)
a.writeFloatLE(0)
a.writeFloatBE(0)
a.writeDoubleLE(0)
a.writeDoubleBE(0)
a.readUInt8(0, false)
a.readUInt16LE(0, false)
a.readUInt16BE(0, false)
a.readUInt32LE(0, false)
a.readUInt32BE(0, false)
a.readInt8(0, false)
a.readInt16LE(0, false)
a.readInt16BE(0, false)
a.readInt32LE(0, false)
a.readInt32BE(0, false)
a.readFloatLE(0, false)
a.readFloatBE(0, false)
a.readDoubleLE(0, false)
a.readDoubleBE(0, false)
a.writeUInt8(0, false)
a.writeUInt16LE(0, false)
a.writeUInt16BE(0, false)
a.writeUInt32LE(0, false)
a.writeUInt32BE(0, false)
a.writeInt8(0, false)
a.writeInt16LE(0, false)
a.writeInt16BE(0, false)
a.writeInt32LE(0, false)
a.writeInt32BE(0, false)
a.writeFloatLE(0, false)
a.writeFloatBE(0, false)
a.writeDoubleLE(0, false)
a.writeDoubleBE(0, false)