CVE-2021-42010

CRLF log injection

Critical · published October 24, 2022

CVSS v3.1
9.8
EPSS
2%
Percentile
77.8
In the wild
Unconfirmed
What it is

🚨 A sneaky CRLF log injection is lurking in Heron versions up to 0.20.4-incubating! This vulnerability lets attackers manipulate your logs, which is absolutely devastating! 🔥 Think of it like a restaurant with an open kitchen where anyone can slip in a false order on a busy night. The chefs, trusting the orders they read, could serve out the wrong dishes, causing chaos in the dining room instead of the kitchen! If exploited, an attacker could inject malicious data into your logs, which might lead to data breaches or make it easier for them to launch further attacks. It's like handing over the recipe book to someone who can swap out the ingredients for something harmful!

Put simply

Think of it like a restaurant with an open kitchen where anyone can slip in a false order on a busy night. The chefs, trusting the orders they read, could serve out the wrong dishes, causing chaos in the dining room instead of the kitchen! This CRLF log injection vulnerability stems from Heron's failure to properly escape log statements, enabling attackers to manipulate log entries and potentially gain unauthorized access. This is a classic case of trusting data without verification!

What to do

If exploited, an attacker could inject malicious data into your logs, which might lead to data breaches or make it easier for them to launch further attacks. It's like handing over the recipe book to someone who can swap out the ingredients for something harmful! To protect yourself, immediately update Heron to version 0.20.5-incubating, which addresses this critical issue. Also, consider implementing thorough logging practices to sanitize and validate log inputs to prevent future attacks. You've got this! By updating and securing your logs, you’re taking a big step in becoming a security hero! 🛡️

The record
Technical detail
CVSS v3.1
9.8 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.01760 · 77.8th percentile
Published
2022-10-24T00:00Z
EPSS history
Timeline
  • 24 OCT 00:00Z
    CRLF log injection
    cvelistv5