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CVE-2021-30129

DoS/OOM leak vulnerability in Apache Mina SSHD Server

MEDIUM
6.5
CVSS Score
Published: July 12, 2021 at 12:10 PM UTC
Updated: June 17, 2026 at 03:49 AM UTC
10 products affected across 2 vendorsFLEXCUBE Universal BankingRetail Customer Management and Segmentation FoundationBanking Payments

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Severity
MEDIUM6.5
Exploit prediction
EPSS 3%

Description

A vulnerability in sshd-core of Apache Mina SSHD allows an attacker to overflow the server causing an OutOfMemory error. This issue affects the SFTP and port forwarding features of Apache Mina SSHD version 2.0.0 and later versions. It was addressed in Apache Mina SSHD 2.7.0

Affected

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

Sshd· Apache
95%
2.0.0 ≤ v < 2.7.0
Affected range stops below 2.7.0, so it looks safe — our inference, not a vendor statement
Banking Payments· Oracle
95%
14.5
Banking Trade Finance· Oracle
95%
14.5
Banking Treasury Management· Oracle
95%
14.5
Communications Cloud Native Core Console· Oracle
95%
1.9.0
FLEXCUBE Universal Banking· Oracle
95%
14.0.0 ≤ v ≤ 14.3.014.5
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
Retail Customer Management and Segmentation Foundation· Oracledrupal
95%
18.019.0
Mina Sshd· Apachemaven
60%
2.0.0 ≤ v < Apache Mina SSHD*2.0.0
Affected range stops below Apache Mina SSHD*, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (5)

Mailing Listx_refsource_MLISTThird Party Advisory
Source: [email protected]
http://www.openwall.com/lists/oss-security/2021/07/12/1
x_refsource_MISCMailing Listx_refsource_MLISTVendor Advisory
Source: [email protected]
https://lists.apache.org/thread.html/r6d4f78e192a0c8eabd671a018da464024642980ecd24096bde6db36f%40%3Cusers.mina.apache.org%3E
Mailing Listx_refsource_MLIST
Source: [email protected]
https://lists.apache.org/thread.html/red01829efa2a8c893c4baff4f23c9312bd938543a9b8658e172b853b%40%3Cannounce.apache.org%3E
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://www.oracle.com/security-alerts/cpuapr2022.html
x_refsource_MISC
Source: [email protected]
https://www.oracle.com/security-alerts/cpujul2022.html

CVSS

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

Quick Info

StatusMODIFIED
CWE
CWE-772

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