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CVE-2021-41973

Apache MINA HTTP listener DOS

MEDIUM
6.5
CVSS Score
Published: November 1, 2021 at 08:35 AM UTC
Updated: June 17, 2026 at 04:09 AM UTC
9 products affected across 2 vendorsFLEXCUBE Universal BankingBanking PaymentsBanking Treasury Management

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Severity
MEDIUM6.5
Exploit prediction
EPSS 5%

Description

In Apache MINA, a specifically crafted, malformed HTTP request may cause the HTTP Header decoder to loop indefinitely. The decoder assumed that the HTTP Header begins at the beginning of the buffer and loops if there is more data than expected. Please update MINA to 2.1.5 or greater.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Mina· Apachemaven
95%
v < 2.0.222.1.0 ≤ v < 2.1.5Apache MINA ≤ v < 2.1.5
Affected range stops below 2.0.22, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.1.5, so it looks safe — our inference, not a vendor statement
Banking Payments· Oracle
95%
14.5
Banking Trade Finance Process Management· Oracle
95%
14.5
Banking Treasury Management· Oracle
95%
14.5
Communications Cloud Native Core Console· Oracle
95%
1.9.0
Customer Management and Segmentation Foundation· Oracle
95%
18.019.0
FLEXCUBE Universal Banking· Oracle
95%
14.0 ≤ v ≤ 14.314.5
Fusion Middleware Common Libraries and Tools· Oracle
95%
12.2.1.3.012.2.1.4.014.1.1.0.0
Oss Support Tools· Oracledrupal
95%
2.12.42

References (4)

Mailing Listx_refsource_MLISTPatchThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/11/01/2
Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/11/01/8
x_refsource_MISCMailing ListPatchVendor Advisory
Source: [email protected]
https://lists.apache.org/thread.html/r0b907da9340d5ff4e6c1a4798ef4e79700a668657f27cca8a39e9250%40%3Cdev.mina.apache.org%3E
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuapr2022.html

CVSS

6.5MEDIUM[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-835

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