Iperf3
CVE-2023-38403
HIGH
Vulnerability Assessment
| Weakness |
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Integer overflow checks
MITRE ATT&CK
1 technique across 1 tactic: Execution The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. |
| Impact | CVSS score of 7.5 (HIGH). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. |
| Exploit ScenarioDerived | A remote attacker could cause unexpected behavior through arithmetic overflow by sending crafted requests to the affected application. No authentication is required to exploit this vulnerability. |
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Alert meAnalysisAI
iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.
RemediationAI
A vendor patch is available. Apply the latest security update as soon as possible. Validate arithmetic operations, use safe integer libraries, check bounds before allocation.
Affects your stack
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Checking this CVE against your own stacks and servers is part of the Basic plan and up.
Technical ContextAI · show details
This vulnerability is classified as Integer Overflow (CWE-190), which allows attackers to cause unexpected behavior through arithmetic overflow. iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field. Affected products include: Es Iperf3, Debian Debian Linux, Fedoraproject Fedora, Netapp Ontap Select Deploy Administration Utility, Netapp Clustered Data Ontap. Version information: before 3.14.
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- Exploit and PoC references, threat intelligence from 22 sources
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Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
DescriptionNVD
iperf3 before 3.14 allows peers to cause an integer overflow and heap corruption via a crafted length field.
Threat Intelligence Overview
NVD
CVE.org
EPSS
GitHub
How this decision was reached
The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.
What every action level means
SSVC AssessmentENISA
Priority Score
Attack Technique
A buffer overflow occurs when a program writes more data to a memory buffer than it was allocated to hold, causing the excess data to spill into adjacent memory regions.
Integer overflow occurs when an arithmetic operation produces a result that exceeds the maximum value a given integer type can store.
Affected Products (CPE)NVD
The parse_string function in cjson.c in the cJSON library mishandles UTF8/16 strings, which allows remote attackers to c
iperf v3.17.1 was discovered to contain a segmentation violation via the iperf_exchange_parameters() function. Rated hig
Remote unauthenticated heap use-after-free in iperf3 3.21 can let an attacker crash or potentially execute code on an ex
Heap-based buffer overflow in iperf3 3.20 and 3.21 allows an unauthenticated remote client to overrun a 256-byte RSA buf
Denial of service in iperf3 prior to 3.22 allows unauthenticated remote attackers to permanently pin a UDP receive worke
iPerf3 before 3.17, when used with OpenSSL before 3.2.0 as a server with RSA authentication, allows a timing side channe
In iperf before 3.19.1, net.c has a buffer overflow when --skip-rx-copy is used (for MSG_TRUNC in recv). Rated high seve
In iperf before 3.19.1, iperf_auth.c has a Base64Decode assertion failure and application exit upon a malformed authenti
In iperf before 3.19.1, iperf_auth.c has an off-by-one error and resultant heap-based buffer overflow. Rated medium seve
Exploit-DB