Cyber Resilience

CVE-2018-17456

Redhat Enterprise Linux 6.0 … 7.6

Public PoCHigh EPSS
Published
06 October 2018
Modified
21 November 2024
Patch / advisory
View advisory
CVSS Score v3 9.8
Click a component to see what it means
Raw vectorCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS Score 0.97 99.9th percentile
Risk Priority 97 floored blend · peak EPSS

Summary

CVE-2018-17456 is a critical-severity Argument Injection (CWE-88) vulnerability in Redhat Enterprise Linux. Its CVSS base score is 9.8 (Critical).

Operationally, ranked in the top 0.1% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

OWASP Top 10 for Web (2025)

A05:2025 Injection

EU & UK References

Vulnerability Data

Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive "git clone" of a superproject if a .gitmodules file has a URL…

more

field beginning with a '-' character.

CWE(s)
CWE-88

Related Threats

Likely ATT&CK TechniquesAI

Techniques this vulnerability likely enables, inferred from its description, weakness type, and attributed-actor tradecraft. Confidence is per-technique.

T1190 Exploit Public-Facing Application Initial Accessconfidence: HIGH
Remote code execution via malicious .gitmodules URL in recursive git clone directly enables exploitation of a public-facing Git service or repository.
attack.mitre.org →
T1203 Exploitation for Client Execution Executionconfidence: HIGH
The vulnerability is triggered during client-side processing of a malicious repository, enabling client execution via a crafted git clone.
attack.mitre.org →
T1059.004 Unix Shell Executionconfidence: MEDIUM
Arbitrary command execution achieved by injecting shell metacharacters via the malicious URL field in .gitmodules.
attack.mitre.org →
inferred from description + CWE · MITRE ATT&CK Enterprise v19.0

CVEs Like This One

CVE-2017-17405Same product: Debian Debian Linux
CVE-2017-8291Same product: Debian Debian Linux
CVE-2017-14492Same product: Canonical Ubuntu Linux
CVE-2017-14493Same product: Canonical Ubuntu Linux
CVE-2016-6662Same product: Debian Debian Linux
CVE-2014-1510Same product: Canonical Ubuntu Linux
CVE-2014-1511Same product: Canonical Ubuntu Linux
CVE-2024-52301Same product: Debian Debian Linux
CVE-2026-24061Same product: Debian Debian Linux
CVE-2019-14287Same product: Canonical Ubuntu Linux

Affected Assets

git-scm
git
2.14.0 — 2.14.5 · 2.15.0 — 2.15.3 · 2.16.0 — 2.16.5
redhat
ansible tower
3.3
redhat
enterprise linux
6.0, 6.7, 7.0, 7.3, 7.4
redhat
enterprise linux desktop
7.0
redhat
enterprise linux server
7.0
redhat
enterprise linux server aus
7.6
redhat
enterprise linux server eus
7.6
redhat
enterprise linux server tus
7.6
redhat
enterprise linux workstation
7.0
canonical
ubuntu linux
14.04, 16.04, 18.04
+1 more product configuration(s) — see NVD for full list

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)
  • V1.2.5

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 mostly match
prevents

Secure SDLC practices directly require proper input validation and command construction to prevent argument injection.

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.8.29 Security testing in development and acceptance mostly match
detects

Security testing can detect argument injection but does not prevent it at the source.

A.8.25 Secure development life cycle partial match
prevents

Secure development lifecycle mandates input validation and command construction practices that directly prevent argument injection.

A.8.26 Application security requirements partial match
prevents

Application security requirements include explicit rules for safe command-line argument handling and escaping.

A.8.27 Secure system architecture and engineering principles partial match
prevents

Secure architecture principles discourage unsafe command invocation patterns and favor safer APIs.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly require proper neutralization of command arguments, directly eliminating CWE-88.

A.8.32 Change management none match
none

Change management can catch unsafe command patterns during reviews but is not a direct mitigation.

References