Security Resilience

CVE-2023-3079

Memory Safety in Fedoraproject Fedora 37 … 38

CISA KEVActive ExploitationEUVD ExploitedPublic PoCMemory Safety
Published
05 June 2023
Modified
08 October 2026
KEV Added
07 June 2023
Patch / advisory
View advisory
CVSS Score v3.1 8.8
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
EPSS Score 0.38 99th percentile
Risk Priority 90 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2023-3079 is a high-severity Type Confusion (CWE-843) vulnerability in Fedoraproject Fedora. Its CVSS base score is 8.8 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Junk Data (T1001.001); ranked in the top 1% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog; a public proof-of-concept is referenced.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

Type confusion in the V8 JavaScript engine of Google Chrome prior to version 114.0.5735.110 constitutes the vulnerability, assigned CVE-2023-3079 with CWE-843. The flaw permits heap corruption when a victim renders a specially crafted HTML page, carrying a CVSS 3.1 score of 8.8 reflecting network attack vector, low complexity, and high impact on confidentiality, integrity, and availability.

A remote attacker can trigger the issue by persuading a user to visit a malicious web page, after which successful exploitation may allow arbitrary code execution within the renderer process. Public proof-of-concept material on PacketStorm demonstrates both the type confusion primitive and a follow-on sandbox escape chain.

Chrome stable channel updates released on 5 June 2023 upgraded V8 to a corrected version; administrators are advised to deploy 114.0.5735.110 or later, and Fedora package maintainers issued corresponding updates to affected Linux distributions.

EPSS for the CVE rose sharply from a low baseline to a peak of 0.3477 on 10 January 2025 before receding to the current value of 0.0171, indicating that exploitation interest materialized well after initial disclosure.

EU & UK References

Vulnerability Data

Type confusion in V8 in Google Chrome prior to 114.0.5735.110 allowed a remote attacker to potentially exploit heap corruption via a crafted HTML page. (Chromium security severity: High)

CWE(s)
CWE-843
KEV Date Added
07 June 2023

Related Threats

Threat-Actor AttributionAI

Google LLC (civil insider-recruitment defendant)
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Microsoft Corp. (Salesforce / Slack engineer recruitment claims)
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Lazarus Group (G0032)
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
AnonOps
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Storm-0530
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
Maui ransomware
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA
l group
North Korea Cyber Group Conducts Global Espionage Campaign to Advance Regime’s Military and Nuclear Programs | CISA

MITRE ATT&CK Enterprise Techniques

T1001.001 Junk Data Command And Control
Adversaries may add junk data to protocols used for command and control to make detection more difficult.
attack.mitre.org →
T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1005 Data from Local System Collection
Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.
attack.mitre.org →
T1011.001 Exfiltration Over Bluetooth Exfiltration
Adversaries may attempt to exfiltrate data over Bluetooth rather than the command and control channel.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-2033Same product: Couchbase Couchbase Serverboth on KEV
CVE-2021-21224Same product: Debian Debian Linuxboth on KEV
CVE-2023-4762Same product: Debian Debian Linuxboth on KEV
CVE-2020-6418Same product: Debian Debian Linuxboth on KEV
CVE-2024-5274Same product: Fedoraproject Fedoraboth on KEV
CVE-2024-4947Same product: Fedoraproject Fedoraboth on KEV
CVE-2021-30551Same product: Fedoraproject Fedoraboth on KEV
CVE-2023-4352Same product: Debian Debian Linux
CVE-2023-3216Same product: Debian Debian Linux
CVE-2021-37973Same product: Debian Debian Linuxboth on KEV

Affected Assets

google
chrome
≤ 114.0.5735.110
fedoraproject
fedora
37, 38
debian
debian linux
11.0, 12.0
couchbase
couchbase server
7.2.0 · ≤ 7.1.5

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.5.2
  • V15.3.5

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 partial match
blocks

Secure SDLC practices directly prevent type-confusion flaws via safe typing, static analysis, and code review while the control itself addresses many additional weaknesses.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References