// For flags

CVE-2021-29482

denial of service in github.com/ulikunitz/xz

Severity Score

7.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

xz is a compression and decompression library focusing on the xz format completely written in Go. The function readUvarint used to read the xz container format may not terminate a loop provide malicous input. The problem has been fixed in release v0.5.8. As a workaround users can limit the size of the compressed file input to a reasonable size for their use case. The standard library had recently the same issue and got the CVE-2020-16845 allocated.

xz es una biblioteca de compresión y descompresión que se centra en el formato xz escrito completamente en Go. La función readUvarint utilizada para leer el formato contenedor xz no puede terminar un bucle y proporcionar una entrada maliciosa. El problema ha sido corregido en la versión v0.5.8. Como solución alternativa, los usuarios pueden limitar el tamaño de la entrada del archivo comprimido a un tamaño razonable para su caso de uso. La biblioteca estándar tuvo recientemente el mismo problema y se le asignó el CVE-2020-16845

A flaw was found in github.com/ulikunitz/xz. The function readUvarint may not terminate a loop what could lead to denial of service (DoS).

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-03-30 CVE Reserved
  • 2021-04-28 CVE Published
  • 2024-01-12 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-400: Uncontrolled Resource Consumption
  • CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Xz Project
Search vendor "Xz Project"
 XZ
Search vendor "Xz Project" for product "XZ"
 < 0.5.8
Search vendor "Xz Project" for product "XZ" and version " < 0.5.8"
go
Affected