// For flags

CVE-2021-36221

golang: net/http/httputil: panic due to racy read of persistConn after handler panic

Severity Score

5.9
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Go before 1.15.15 and 1.16.x before 1.16.7 has a race condition that can lead to a net/http/httputil ReverseProxy panic upon an ErrAbortHandler abort.

Go versiones anteriores a 1.15.15 y 1.16.x versiones anteriores a 1.16.7, presenta una condición de carrera que puede conllevar un pánico de net/http/httputil ReverseProxy al abortar ErrAbortHandler

A race condition flaw was found in Go. The incoming requests body weren't closed after the handler panic and as a consequence this could lead to ReverseProxy crash. The highest threat from this vulnerability is to Availability.

OpenShift sandboxed containers support for OpenShift Container Platform provides users with built-in support for running Kata containers as an additional, optional runtime. This advisory contains an update for OpenShift sandboxed containers with enhancements, security updates, and bug fixes. Space precludes documenting all of the updates to OpenShift sandboxed containers in this advisory.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-07-07 CVE Reserved
  • 2021-08-08 CVE Published
  • 2024-08-04 CVE Updated
  • 2025-05-15 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Siemens
Search vendor "Siemens"
 Scalance Lpe9403 Firmware
Search vendor "Siemens" for product "Scalance Lpe9403 Firmware"
 < 2.0
Search vendor "Siemens" for product "Scalance Lpe9403 Firmware" and version " < 2.0"
-
Affected
in Siemens
Search vendor "Siemens"
 Scalance Lpe9403
Search vendor "Siemens" for product "Scalance Lpe9403"
--
Safe
Golang
Search vendor "Golang"
 Go
Search vendor "Golang" for product "Go"
 < 1.15.15
Search vendor "Golang" for product "Go" and version " < 1.15.15"
-
Affected
Golang
Search vendor "Golang"
 Go
Search vendor "Golang" for product "Go"
 >= 1.16.0 < 1.16.7
Search vendor "Golang" for product "Go" and version " >= 1.16.0 < 1.16.7"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 35
Search vendor "Fedoraproject" for product "Fedora" and version "35"
-
Affected
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
Oracle
Search vendor "Oracle"
 Timesten In-memory Database
Search vendor "Oracle" for product "Timesten In-memory Database"
 < 21.1.1.1.0
Search vendor "Oracle" for product "Timesten In-memory Database" and version " < 21.1.1.1.0"
-
Affected