// For flags

CVE-2021-44717

golang: syscall: don't close fd 0 on ForkExec error

Severity Score

4.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Go before 1.16.12 and 1.17.x before 1.17.5 on UNIX allows write operations to an unintended file or unintended network connection as a consequence of erroneous closing of file descriptor 0 after file-descriptor exhaustion.

Go versiones anteriores a 1.16.12 y versiones 1.17.x anteriores a 1.17.5 en UNIX, permite operaciones de escritura en un archivo no deseado o en una conexión de red no deseada como consecuencia de un cierre erróneo del descriptor de archivo 0 tras el agotamiento del descriptor de archivo.

There's a flaw in golang's syscall.ForkExec() interface. An attacker who manages to first cause a file descriptor exhaustion for the process, then cause syscall.ForkExec() to be called repeatedly, could compromise data integrity and/or confidentiality in a somewhat uncontrolled way in programs linked with and using syscall.ForkExec().

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the container images for Red Hat OpenShift Container Platform 4.10.3. Issues addressed include bypass, cross site request forgery, denial of service, and traversal vulnerabilities.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-12-07 CVE Reserved
  • 2021-12-16 CVE Published
  • 2024-08-04 CVE Updated
  • 2025-05-28 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
  • CWE-404: Improper Resource Shutdown or Release
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Golang
Search vendor "Golang"
Go
Search vendor "Golang" for product "Go"
< 1.16.12
Search vendor "Golang" for product "Go" and version " < 1.16.12"
-
Affected
in Opengroup
Search vendor "Opengroup"
Unix
Search vendor "Opengroup" for product "Unix"
--
Safe
Golang
Search vendor "Golang"
Go
Search vendor "Golang" for product "Go"
>= 1.17.0 < 1.17.5
Search vendor "Golang" for product "Go" and version " >= 1.17.0 < 1.17.5"
-
Affected
in Opengroup
Search vendor "Opengroup"
Unix
Search vendor "Opengroup" for product "Unix"
--
Safe
Debian
Search vendor "Debian"
Debian Linux
Search vendor "Debian" for product "Debian Linux"
9.0
Search vendor "Debian" for product "Debian Linux" and version "9.0"
-
Affected