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Git CVE-2015-7545

CRITICAL
Improper Input Validation (CWE-20)
2016-04-13 secalert@redhat.com
RCE Red Hat Canonical Git Ubuntu Linux Opensuse Software Collections Git Project
9.8
CVSS 3.0 · NVD
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Vulnerability Assessment

Weakness
CWE
CWE-20
OWASP Top 10:2025
A05:2025 - Injection
ASVS 5.0
V2 - Validation and Business Logic Input validation, allowlisting
Impact

CVSS score of 9.8 (CRITICAL). Attack characteristics: network attack vector, low complexity, no privileges required, no user interaction not required. EPSS exploitation probability: 34.73%.
Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the critical-severity affected system.
Act Now Prioritize within 24-48h. Why: CRITICAL severity.
Patch available 34.7% exploitation probability (EPSS)

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AnalysisAI

The (1) git-remote-ext and (2) unspecified other remote helper programs in Git before 2.3.10, 2.4.x before 2.4.10, 2.5.x before 2.5.4, and 2.6.x before 2.6.1 do not properly restrict the allowed. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Epss exploitation probability 34.7%.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

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Technical ContextAI · show details

This vulnerability is classified under CWE-20. The (1) git-remote-ext and (2) unspecified other remote helper programs in Git before 2.3.10, 2.4.x before 2.4.10, 2.5.x before 2.5.4, and 2.6.x before 2.6.1 do not properly restrict the allowed protocols, which might allow remote attackers to execute arbitrary code via a URL in a (a) .gitmodules file or (b) unknown other sources in a submodule. Affected products include: Git Project Git, Redhat Software Collections, Canonical Ubuntu Linux, Opensuse. Version information: before 2.3.10.

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

NVD PRIMARY 9.8 CRITICAL
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

DescriptionCVE.org

The (1) git-remote-ext and (2) unspecified other remote helper programs in Git before 2.3.10, 2.4.x before 2.4.10, 2.5.x before 2.5.4, and 2.6.x before 2.6.1 do not properly restrict the allowed protocols, which might allow remote attackers to execute arbitrary code via a URL in a (a) .gitmodules file or (b) unknown other sources in a submodule.

Threat Intelligence Overview

EPSS Score
34.7%
Top 3% exploitable
Data Quality
4 sources
Confidence: Medium
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.

SignalValue
Severity CRITICAL
CISA KEV No
Public POC No
EPSS 34.7%
Patch available Yes
Active threat No
Deciding rule
CRITICAL severity
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
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
Yes
Human Impact· derived
Medium

Priority Score

84
Low Medium High Critical
KEV: 0
EPSS: +35
CVSS: +49
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Remote Code Execution CRITICAL

Remote Code Execution represents the critical moment when an attacker successfully runs arbitrary code on a target system without physical access.

Affected Products (CPE)CVE.org

cpe:2.3:a:git_project:git:*:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.0:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.1:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.2:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.3:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.4:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.5:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.6:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.7:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.8:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.4.9:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.5.0:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.5.1:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.5.2:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.5.3:*:*:*:*:*:*:*
cpe:2.3:a:git_project:git:2.6.0:*:*:*:*:*:*:*
cpe:2.3:a:redhat:software_collections:1.0:*:*:*:*:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*
cpe:2.3:o:canonical:ubuntu_linux:15.04:*:*:*:*:*:*:*
+ 3 more

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References

Advisories & patches
PATCH https://github.com/git/git/blob/master/Documentation/RelNotes/2.3.10.txt PATCH https://github.com/git/git/blob/master/Documentation/RelNotes/2.4.10.txt PATCH https://github.com/git/git/blob/master/Documentation/RelNotes/2.5.4.txt REF http://lists.opensuse.org/opensuse-updates/2015-11/msg00066.html REF http://rhn.redhat.com/errata/RHSA-2015-2515.html REF http://www.debian.org/security/2016/dsa-3435 REF http://www.openwall.com/lists/oss-security/2015/12/08/5 REF http://www.openwall.com/lists/oss-security/2015/12/09/8 REF http://www.openwall.com/lists/oss-security/2015/12/11/7 REF http://www.oracle.com/technetwork/topics/security/bulletinapr2016-2952098.html REF http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html REF http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2015-2719645.html REF http://www.securityfocus.com/bid/78711 REF http://www.securitytracker.com/id/1034501 REF http://www.slackware.com/security/viewer.php?l=slackware-security&y=2016&m=slackware-security.533255 REF http://www.ubuntu.com/usn/USN-2835-1 REF https://bugzilla.redhat.com/show_bug.cgi?id=1269794 REF https://github.com/git/git/blob/master/Documentation/RelNotes/2.6.1.txt REF https://kernel.googlesource.com/pub/scm/git/git/+/33cfccbbf35a56e190b79bdec5c85457c952a021 REF https://lkml.org/lkml/2015/10/5/683 REF https://security.gentoo.org/glsa/201605-01

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