CVE-2021-20399

IBM Qradar SIEM 7.3.0 to 7.3.3 Patch 8 and 7.4.0 to 7.4.3 GA is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data

High · published July 27, 2021

CVSS v3.0
7.1
EPSS
2%
Percentile
78.2
In the wild
Unconfirmed
What it is

🚨 A sneaky XML External Entity Injection (XXE) vulnerability in IBM Qradar SIEM means attackers could peek at sensitive info or munch through memory resources with ease! ⚡ Think of this vulnerability like a sneaky delivery driver who knows to take every shortcut to rummage through your filing cabinets instead of just dropping off the package. If they know the right route, they can get access to everything stored away! An attacker could exploit this vulnerability to not just snoop around but also consume valuable memory resources, potentially leading to system slowdowns or crashes. This could put sensitive data at risk and leave your security posture severely compromised — absolutely devastating!

Put simply

Think of this vulnerability like a sneaky delivery driver who knows to take every shortcut to rummage through your filing cabinets instead of just dropping off the package. If they know the right route, they can get access to everything stored away! This XXE vulnerability allows remote attackers to manipulate XML data to expose sensitive information or exhaust system resources by injecting malicious XML. It specifically targets versions 7.3.0 to 7.3.3 Patch 8 and 7.4.0 to 7.4.3 GA of IBM Qradar SIEM.

What to do

An attacker could exploit this vulnerability to not just snoop around but also consume valuable memory resources, potentially leading to system slowdowns or crashes. This could put sensitive data at risk and leave your security posture severely compromised — absolutely devastating! Update to the latest patch of IBM Qradar SIEM immediately to close this vulnerability. Ensure XML processing configurations are secure by disabling external entity resolution where possible. Regularly audit your security configurations to keep vulnerabilities at bay! You've got this! Follow these steps, and you'll have your systems locked down in no time! 🛡️

The record
Technical detail
CVSS v3.0
7.1 · HIGH
Vector
CVSS:3.0/AV:N/PR:L/C:H/UI:N/AC:L/S:U/I:N/A:L/RC:C/E:U/RL:O
CVSS v4.0
Not supplied
EPSS
0.01788 · 78.2th percentile
Published
2021-07-27T11:25Z
EPSS history
Timeline
  • 27 JUL 11:25Z
    IBM Qradar SIEM 7.3.0 to 7.3.3 Patch 8 and 7.4.0 to 7.4.3 GA is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data
    cvelistv5