8.1
HIGH
CVE-2021-22901
OpenSSL curl TLS1.3 Session Ticket Use-After-Free Remote Code Execution Vulnerability
Description

curl 7.75.0 through 7.76.1 suffers from a use-after-free vulnerability resulting in already freed memory being used when a TLS 1.3 session ticket arrives over a connection. A malicious server can use this in rare unfortunate circumstances to potentially reach remote code execution in the client. When libcurl at run-time sets up support for TLS 1.3 session tickets on a connection using OpenSSL, it stores pointers to the transfer in-memory object for later retrieval when a session ticket arrives. If the connection is used by multiple transfers (like with a reused HTTP/1.1 connection or multiplexed HTTP/2 connection) that first transfer object might be freed before the new session is established on that connection and then the function will access a memory buffer that might be freed. When using that memory, libcurl might even call a function pointer in the object, making it possible for a remote code execution if the server could somehow manage to get crafted memory content into the correct place in memory.

INFO

Published Date :

June 11, 2021, 4:15 p.m.

Last Modified :

March 27, 2024, 3:12 p.m.

Source :

[email protected]

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

2.2
Public PoC/Exploit Available at Github

CVE-2021-22901 has a 2 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-22901 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Netapp active_iq_unified_manager
2 Netapp solidfire_baseboard_management_controller_firmware
3 Netapp cloud_backup
4 Netapp solidfire_\&_hci_management_node
5 Netapp oncommand_insight
6 Netapp oncommand_workflow_automation
7 Netapp snapcenter
8 Netapp h300s_firmware
9 Netapp h500s_firmware
10 Netapp h700s_firmware
11 Netapp h410s_firmware
12 Netapp solidfire\,_enterprise_sds_\&_hci_storage_node
13 Netapp hci_compute_node_firmware
14 Netapp hci_compute_node
15 Netapp h300s
16 Netapp h410s
17 Netapp h500s
18 Netapp h700s
19 Netapp h300e_firmware
20 Netapp h500e_firmware
21 Netapp h700e_firmware
22 Netapp h300e
23 Netapp h500e
24 Netapp h700e
1 Oracle communications_cloud_native_core_network_slice_selection_function
2 Oracle communications_cloud_native_core_network_repository_function
3 Oracle essbase
4 Oracle communications_cloud_native_core_network_function_cloud_native_environment
5 Oracle communications_cloud_native_core_binding_support_function
6 Oracle mysql_server
7 Oracle communications_cloud_native_core_service_communication_proxy
1 Haxx curl
1 Siemens sinec_infrastructure_network_services
1 Splunk universal_forwarder
: Total Affected Vendor : 5 | Products : 34
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2021-22901.

URL Resource
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf Third Party Advisory
https://curl.se/docs/CVE-2021-22901.html Exploit Patch Vendor Advisory
https://github.com/curl/curl/commit/7f4a9a9b2a49547eae24d2e19bc5c346e9026479 Patch Third Party Advisory
https://hackerone.com/reports/1180380 Exploit Issue Tracking Third Party Advisory
https://security.netapp.com/advisory/ntap-20210723-0001/ Third Party Advisory
https://security.netapp.com/advisory/ntap-20210727-0007/ Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujan2022.html Patch Third Party Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

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chnzzh/OpenSSL-CVE-lib

None

Updated: 2 months, 2 weeks ago
5 stars 0 fork 0 watcher
Born at : Feb. 23, 2023, 5:42 a.m. This repo has been linked 455 different CVEs too.
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falk-werner/cve-check

CVE Checker

Python

Updated: 2 years ago
4 stars 0 fork 0 watcher
Born at : June 26, 2021, 9:38 p.m. This repo has been linked 7 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-22901 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-22901 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Reanalysis by [email protected]

    Mar. 27, 2024

    Action Type Old Value New Value
    Added CPE Configuration OR *cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* versions from (including) 8.2.0 up to (excluding) 8.2.12 *cpe:2.3:a:splunk:universal_forwarder:*:*:*:*:*:*:*:* versions from (including) 9.0.0 up to (excluding) 9.0.6 *cpe:2.3:a:splunk:universal_forwarder:9.1.0:*:*:*:*:*:*:*
  • Modified Analysis by [email protected]

    May. 13, 2022

    Action Type Old Value New Value
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpuapr2022.html No Types Assigned https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
    Changed CPE Configuration OR *cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* versions up to (excluding) 11.1.2.4.047 *cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* versions from (including) 21.0 up to (excluding) 21.3 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (including) 5.7.34 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.0.25 OR *cpe:2.3:a:oracle:communications_cloud_native_core_binding_support_function:1.11.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_network_function_cloud_native_environment:1.10.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_network_repository_function:1.15.1:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_network_slice_selection_function:1.8.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:communications_cloud_native_core_service_communication_proxy:1.15.0:*:*:*:*:*:*:* *cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* versions up to (excluding) 11.1.2.4.047 *cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* versions from (including) 21.0 up to (excluding) 21.3 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (including) 5.7.34 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.0.25
  • CVE Modified by [email protected]

    May. 10, 2022

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-732250.pdf [No Types Assigned]
  • CVE Modified by [email protected]

    Apr. 20, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpuapr2022.html [No Types Assigned]
  • Modified Analysis by [email protected]

    Apr. 06, 2022

    Action Type Old Value New Value
    Changed Reference Type https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf No Types Assigned https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:siemens:sinec_infrastructure_network_services:*:*:*:*:*:*:*:* versions up to (excluding) 1.0.1.1
  • CVE Modified by [email protected]

    Mar. 10, 2022

    Action Type Old Value New Value
    Added Reference https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf [No Types Assigned]
  • Modified Analysis by [email protected]

    Mar. 04, 2022

    Action Type Old Value New Value
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210723-0001/ No Types Assigned https://security.netapp.com/advisory/ntap-20210723-0001/ Third Party Advisory
    Changed Reference Type https://security.netapp.com/advisory/ntap-20210727-0007/ No Types Assigned https://security.netapp.com/advisory/ntap-20210727-0007/ Third Party Advisory
    Changed Reference Type https://www.oracle.com//security-alerts/cpujul2021.html No Types Assigned https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
    Changed Reference Type https://www.oracle.com/security-alerts/cpujan2022.html No Types Assigned https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory
    Added CPE Configuration OR *cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* versions up to (excluding) 11.1.2.4.047 *cpe:2.3:a:oracle:essbase:*:*:*:*:*:*:*:* versions from (including) 21.0 up to (excluding) 21.3 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions up to (including) 5.7.34 *cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:* versions from (including) 8.0.0 up to (including) 8.0.25
    Added CPE Configuration OR *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vsphere:*:* *cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:windows:*:* *cpe:2.3:a:netapp:cloud_backup:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:oncommand_insight:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:snapcenter:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire\,_enterprise_sds_\&_hci_storage_node:-:*:*:*:*:*:*:* *cpe:2.3:a:netapp:solidfire_\&_hci_management_node:-:*:*:*:*:*:*:* *cpe:2.3:o:netapp:solidfire_baseboard_management_controller_firmware:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:hci_compute_node_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:hci_compute_node:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h300s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h300s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h410s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h410s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h500s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h500s:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700e_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700e:-:*:*:*:*:*:*:*
    Added CPE Configuration AND OR *cpe:2.3:o:netapp:h700s_firmware:-:*:*:*:*:*:*:* OR cpe:2.3:h:netapp:h700s:-:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Feb. 07, 2022

    Action Type Old Value New Value
    Added Reference https://www.oracle.com/security-alerts/cpujan2022.html [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 30, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210727-0007/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 23, 2021

    Action Type Old Value New Value
    Added Reference https://security.netapp.com/advisory/ntap-20210723-0001/ [No Types Assigned]
  • CVE Modified by [email protected]

    Jul. 20, 2021

    Action Type Old Value New Value
    Added Reference https://www.oracle.com//security-alerts/cpujul2021.html [No Types Assigned]
  • Initial Analysis by [email protected]

    Jun. 22, 2021

    Action Type Old Value New Value
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:P/I:P/A:P)
    Added CVSS V3.1 NIST AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://curl.se/docs/CVE-2021-22901.html No Types Assigned https://curl.se/docs/CVE-2021-22901.html Exploit, Patch, Vendor Advisory
    Changed Reference Type https://github.com/curl/curl/commit/7f4a9a9b2a49547eae24d2e19bc5c346e9026479 No Types Assigned https://github.com/curl/curl/commit/7f4a9a9b2a49547eae24d2e19bc5c346e9026479 Patch, Third Party Advisory
    Changed Reference Type https://hackerone.com/reports/1180380 No Types Assigned https://hackerone.com/reports/1180380 Exploit, Issue Tracking, Third Party Advisory
    Added CWE NIST CWE-416
    Added CPE Configuration OR *cpe:2.3:a:haxx:curl:*:*:*:*:*:*:*:* versions from (including) 7.75.0 up to (including) 7.76.1
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-22901 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-22901 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

10.00 }} 2.68%

score

0.94934

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
: