Vulnerability Monitor

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CVE-2021-25122

When responding to new h2c connection requests, Apache Tomcat versions 10.0.0-M1 to 10.0.0, 9.0.0.M1 to 9.0.41 and 8.5.0 to 8.5.61 could duplicate request headers and a limited amount of request body from one request to another meaning user A and user B could both see the results of user A's request.

Security Impact Summary

This vulnerability carries a HIGH severity rating with a CVSS v3.1 score of 7.5, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 12 products from apache, from debian, from oracle and 9 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2021, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2021-03-01T12:15:13.793

Last Modified

2024-11-21T05:54:23.690

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:P/I:N/A:N

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: PARTIAL
Integrity Impact: NONE
Availability Impact: NONE

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Secondary
CWE-200
Type: Primary
CWE-200

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Application	apache	tomcat	≤ 8.5.61	Yes
Application	apache	tomcat	≤ 9.0.41	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	9.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Application	apache	tomcat	10.0.0	Yes
Operating System	debian	debian_linux	9.0	Yes
Operating System	debian	debian_linux	10.0	Yes
Application	oracle	agile_plm	9.3.3	Yes
Application	oracle	agile_plm	9.3.6	Yes
Application	oracle	communications_cloud_native_core_policy	1.14.0	Yes
Application	oracle	communications_cloud_native_core_security_edge_protection_proxy	1.6.0	Yes
Application	oracle	communications_instant_messaging_server	10.0.1.5.0	Yes
Application	oracle	database	12.2.0.1	Yes
Application	oracle	database	19c	Yes
Application	oracle	database	21c	Yes
Application	oracle	graph_server_and_client	< 21.3.0	Yes
Application	oracle	graph_server_and_client	21.3.0	Yes
Application	oracle	instantis_enterprisetrack	17.1	Yes
Application	oracle	instantis_enterprisetrack	17.2	Yes
Application	oracle	instantis_enterprisetrack	17.3	Yes
Application	oracle	managed_file_transfer	12.2.1.3.0	Yes
Application	oracle	managed_file_transfer	12.2.1.4.0	Yes
Application	oracle	mysql_enterprise_monitor	≤ 8.0.23	Yes
Application	oracle	siebel_ui_framework	≤ 21.9	Yes

References

http://www.openwall.com/lists/oss-security/2021/03/01/1 Mailing List, Third Party Advisory ([email protected])
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E ([email protected])
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E Mailing List, Vendor Advisory ([email protected])
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E Mailing List, Vendor Advisory ([email protected])
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E ([email protected])
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E ([email protected])
https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E ([email protected])
https://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947%40%3Cusers.tomcat.apache.org%3E ([email protected])
https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E ([email protected])
https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html Mailing List, Third Party Advisory ([email protected])
https://security.gentoo.org/glsa/202208-34 Third Party Advisory ([email protected])
https://security.netapp.com/advisory/ntap-20210409-0002/ Third Party Advisory ([email protected])
https://www.debian.org/security/2021/dsa-4891 Third Party Advisory ([email protected])
https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory ([email protected])
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory ([email protected])
http://www.openwall.com/lists/oss-security/2021/03/01/1 Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E Mailing List, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cannounce.tomcat.apache.org%3E Mailing List, Vendor Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cdev.tomcat.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/r7b95bc248603360501f18c8eb03bb6001ec0ee3296205b34b07105b7%40%3Cusers.tomcat.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/rcd90bf36b1877e1310b87ecd14ed7bbb15da52b297efd9f0e7253a3b%40%3Cusers.tomcat.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/rd0463f9a5cbc02a485404c4b990f0da452e5ac5c237808edba11c947%40%3Cusers.tomcat.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://lists.apache.org/thread.html/rf6d5d57b114678d8898005faef31e9fd6d7c981fcc4ccfc3bc272fc9%40%3Cdev.tomcat.apache.org%3E (af854a3a-2127-422b-91ae-364da2661108)
https://lists.debian.org/debian-lts-announce/2021/03/msg00018.html Mailing List, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.gentoo.org/glsa/202208-34 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://security.netapp.com/advisory/ntap-20210409-0002/ Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.debian.org/security/2021/dsa-4891 Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpujan2022.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For apache's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.