CVE-2020-15690

In Nim before 1.2.6, the standard library asyncftpclient lacks a check for whether a message contains a newline character

published January 30, 2021

CVSS
—
EPSS
3%
Percentile
88.0
In the wild
Unconfirmed
What it is

⚠️ A sneaky newline character could slip right through the asyncftpclient library! This flaw in Nim versions before 1.2.6 could lead to unexpected behavior when processing messages. 🤔 Think of it like a waiter who doesn’t notice an important note slipped in with your order. If the note contains special instructions but goes unchecked, it could lead to a mix-up that affects the entire kitchen! 🍽️ Without a proper check for newline characters, messages processed by asyncftpclient could become corrupted or misinterpreted. An attacker could exploit this vulnerability to manipulate communication, leading to chaos in data handling!

Put simply

Think of it like a waiter who doesn’t notice an important note slipped in with your order. If the note contains special instructions but goes unchecked, it could lead to a mix-up that affects the entire kitchen! 🍽️ The issue arises from the lack of validation on incoming messages in the asyncftpclient, allowing newline characters to pass through unchecked. This can lead to unintended impacts on message parsing and processing.

What to do

Without a proper check for newline characters, messages processed by asyncftpclient could become corrupted or misinterpreted. An attacker could exploit this vulnerability to manipulate communication, leading to chaos in data handling! Update to Nim version 1.2.6 or later to ensure that newline characters are properly checked in incoming messages. Additionally, review existing code for any potential assumptions regarding message formatting. 🔍 You've got this! A simple update will help lock down your application and keep things running smoothly. 🛡️

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.03180 · 88.0th percentile
Published
2021-01-30T05:12Z
EPSS history
Timeline
  • 30 JAN 05:12Z
    In Nim before 1.2.6, the standard library asyncftpclient lacks a check for whether a message contains a newline character
    cvelistv5