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Vulnerability Assessment

Weakness
CWE
CWE-787
ASVS 5.0
V15 - Secure Coding and Architecture Bounds checking, write limits
MITRE ATT&CK

2 techniques across 2 tactics: Execution, Privilege Escalation

The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up.

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Impact

CVSS score of 7.3 (HIGH). Attack characteristics: local attack vector, low complexity, no privileges required, no user interaction not required. Public proof-of-concept exploit code is available. EPSS exploitation probability: 92.58%.
Exploit ScenarioDerived

A local attacker with access to the system could write data beyond allocated buffer boundaries leading to code execution or crashes. No authentication is required to exploit this vulnerability.
Act Now Prioritize within 24-48h. Why: HIGH severity + EPSS > 10%.
No patch listed yet 92.6% exploitation probability (EPSS)

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AnalysisAI

The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may. Rated high severity (CVSS 7.3), this vulnerability is no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 92.6%.

RemediationAI

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).

Affects your stack

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Technical ContextAI · show details

This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable. Affected products include: Gnu Glibc, Netapp Active Iq Unified Manager, Debian Debian Linux, Netapp Hci H300S Firmware, Netapp Hci H500S Firmware. Version information: up to 4.

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  • Exploit and PoC references, threat intelligence from 22 sources
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Severity by source

NVD PRIMARY 7.3 HIGH
AV:L/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
High

DescriptionCVE.org

The iconv() function in the GNU C Library versions 2.39 and older may overflow the output buffer passed to it by up to 4 bytes when converting strings to the ISO-2022-CN-EXT character set, which may be used to crash an application or overwrite a neighbouring variable.

Threat Intelligence Overview

Threat Score
5.7/10
Composite threat intelligence
EPSS Score
92.6%
Top 0% exploitable
Exploit
POC
Public exploit code exists
Data Quality
5 sources
Confidence: Medium
NVD CVE.org EPSS POC (2) VulDB

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.

SignalValue
Severity HIGH
CISA KEV No
Public POC Yes
EPSS 92.6%
Patch available No
Active threat Yes
Deciding rule
HIGH severity + EPSS > 10%
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Out-of-Cycle
Exploitation· derived
Active
System Exposure· derived
Small
Automatable· derived
No
Human Impact· derived
High

Priority Score

164
Low Medium High Critical
KEV: 0
EPSS: +93
CVSS: +36
PoC: +20
Weaponized: +15
Threat intel: 0
Gov advisory: 0

Attack Technique

Buffer Overflow HIGH

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.

Memory Corruption HIGH

Memory corruption occurs when a program writes data beyond the boundaries of allocated memory regions or accesses memory in unintended ways, violating the integrity of the process's address space.

Affected Products (CPE)CVE.org

cpe:2.3:a:gnu:glibc:*:*:*:*:*:*:*:*
cpe:2.3:a:netapp:active_iq_unified_manager:-:*:*:*:*:vmware_vsphere:*:*
cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h300s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h500s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h700s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h410s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h410c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h610c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h610s_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_h615c_firmware:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:hci_compute_node:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*

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Same weakness CWE-787 – Out-of-bounds Write

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Same technique Buffer Overflow

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References

Advisories & patches
ADVISORY https://vuldb.com/vuln/261388 REF http://www.openwall.com/lists/oss-security/2024/04/17/9 REF http://www.openwall.com/lists/oss-security/2024/04/18/4 REF http://www.openwall.com/lists/oss-security/2024/04/24/2 REF http://www.openwall.com/lists/oss-security/2024/05/27/1 REF http://www.openwall.com/lists/oss-security/2024/05/27/2 REF http://www.openwall.com/lists/oss-security/2024/05/27/3 REF http://www.openwall.com/lists/oss-security/2024/05/27/4 REF http://www.openwall.com/lists/oss-security/2024/05/27/5 REF http://www.openwall.com/lists/oss-security/2024/05/27/6 REF http://www.openwall.com/lists/oss-security/2024/07/22/5 REF https://cert-portal.siemens.com/productcert/html/ssa-082556.html REF https://lists.debian.org/debian-lts-announce/2024/05/msg00001.html REF https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/BTJFBGHDYG5PEIFD5WSSSKSFZ2AZWC5N/ REF https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/P3I4KYS6EU6S7QZ47WFNTPVAHFIUQNEL/ REF https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YAMJQI3Y6BHWV3CUTYBXOZONCUJNOB2Z/ REF https://security.netapp.com/advisory/ntap-20240531-0002/ REF https://sourceware.org/git/?p=glibc.git;a=blob;f=advisories/GLIBC-SA-2024-0004 REF https://www.ambionics.io/blog/iconv-cve-2024-2961-p1 REF https://www.ambionics.io/blog/iconv-cve-2024-2961-p2 REF https://www.ambionics.io/blog/iconv-cve-2024-2961-p3

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