CVE-2021-38555

An XML external entity (XXE) injection vulnerability exists in Apache Any23 StreamUtils.java

published September 11, 2021

CVSS
โ€”
EPSS
3%
Percentile
86.1
In the wild
Unconfirmed
What it is

๐Ÿšจ An XML external entity (XXE) injection vulnerability has been found in Any23, allowing attackers to peek into server files like a nosy neighbor! Think of this as a restaurant that serves up a menu but allows customers to sneak a peek into the kitchen โ€” an attacker can manipulate the XML to gain access to hidden files and sensitive information, just like how the diners can get a view of all the chaos behind the scenes! If exploited, this vulnerability could allow an attacker to read any files within the application server's filesystem, potentially revealing sensitive configuration data, private keys, or even personal data! This could lead to further attacks on other systems accessible to the application, posing a significant risk.

Put simply

Think of this as a restaurant that serves up a menu but allows customers to sneak a peek into the kitchen โ€” an attacker can manipulate the XML to gain access to hidden files and sensitive information, just like how the diners can get a view of all the chaos behind the scenes! This XXE vulnerability exists in the Any23 StreamUtils.java file, affecting versions prior to 2.5. It enables an attacker to inject malicious XML that the application processes, leaking sensitive information or gaining unauthorized access to backend systems.

What to do

If exploited, this vulnerability could allow an attacker to read any files within the application server's filesystem, potentially revealing sensitive configuration data, private keys, or even personal data! This could lead to further attacks on other systems accessible to the application, posing a significant risk. To mitigate this vulnerability, upgrade to Any23 version 2.5 or higher immediately. Additionally, ensure that XML parsing is configured securely by disabling external entity resolution and validating input data. You've got this! With these updates, you'll be protecting your application from sneaky XML shenanigans in no time! ๐Ÿ›ก๏ธ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02752 ยท 86.1th percentile
Published
2021-09-11T11:05Z
EPSS history
Timeline
  • 11 SEP 11:05Z
    An XML external entity (XXE) injection vulnerability exists in Apache Any23 StreamUtils.java
    cvelistv5