CVE-2024-6387 (GCVE-0-2024-6387)
Vulnerability from cvelistv5 – Published: 2024-07-01 12:37 – Updated: 2026-09-01 11:07
VLAI
EPSS
VEX
Title
Openssh: regresshion - race condition in ssh allows rce/dos
Summary
A security regression (CVE-2006-5051) was discovered in OpenSSH's server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period.
Severity
8.1 (High)
SSVC
Exploitation: poc
Automatable: no
Technical Impact: total
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-02 13:18 UTC
CWE
- CWE-364 - Signal Handler Race Condition
Assigner
References
81 references
Impacted products
23 products
| Vendor | Product | Version | CPE status | |
|---|---|---|---|---|
|
Affected:
8.5p1 , ≤ 9.7p1
(custom)
|
||||
| Red Hat | Red Hat Enterprise Linux 9 |
Unaffected:
0:8.7p1-38.el9_4.1 , < *
(rpm)
cpe:/a:redhat:enterprise_linux:9::appstream cpe:/o:redhat:enterprise_linux:9::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions |
Unaffected:
0:8.7p1-12.el9_0.1 , < *
(rpm)
cpe:/a:redhat:rhel_e4s:9.0::appstream cpe:/o:redhat:rhel_e4s:9.0::baseos |
||
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support |
Unaffected:
0:8.7p1-30.el9_2.4 , < *
(rpm)
cpe:/a:redhat:rhel_eus:9.2::appstream cpe:/o:redhat:rhel_eus:9.2::baseos |
||
| Red Hat | Red Hat OpenShift Container Platform 4.13 |
Unaffected:
413.92.202407091321-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.13::el8 cpe:/a:redhat:openshift:4.13::el9 |
||
| Red Hat | Red Hat OpenShift Container Platform 4.14 |
Unaffected:
414.92.202407091253-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.14::el8 cpe:/a:redhat:openshift:4.14::el9 |
||
| Red Hat | Red Hat OpenShift Container Platform 4.15 |
Unaffected:
415.92.202407091355-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.15::el8 cpe:/a:redhat:openshift:4.15::el9 |
||
| Red Hat | Red Hat OpenShift Container Platform 4.16 |
Unaffected:
416.94.202407081958-0 , < *
(rpm)
cpe:/a:redhat:openshift:4.16::el9 |
||
| Red Hat | Red Hat Ceph Storage 5 |
cpe:/a:redhat:ceph_storage:5
|
||
| Red Hat | Red Hat Ceph Storage 6 |
cpe:/a:redhat:ceph_storage:6
|
||
| Red Hat | Red Hat Ceph Storage 7 |
cpe:/a:redhat:ceph_storage:7
|
||
| Red Hat | Red Hat Enterprise Linux 10 |
cpe:/o:redhat:enterprise_linux:10
|
||
| Red Hat | Red Hat Enterprise Linux 6 |
cpe:/o:redhat:enterprise_linux:6
|
||
| Red Hat | Red Hat Enterprise Linux 7 |
cpe:/o:redhat:enterprise_linux:7
|
||
| Red Hat | Red Hat Enterprise Linux 8 |
cpe:/o:redhat:enterprise_linux:8
|
||
| Red Hat | Red Hat OpenShift Container Platform 4 |
cpe:/a:redhat:openshift:4
|
||
| Siemens | Industrial Edge Management OS (IEM-OS) |
Affected:
0 , < *
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed | |
| Siemens | SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed | |
| Siemens | SINAMICS IIoT module |
Affected:
0 , < V1.0 HF1
(custom)
|
guessed | |
| Siemens | SINEMA Remote Connect Server |
Affected:
0 , < V3.2 SP2
(custom)
|
guessed | |
| Siemens | SINUMERIK ONE |
Affected:
0 , < V6.24
(custom)
|
guessed | |
| Siemens | SIPLUS S7-1500 CPU 1518-4 PN/DP MFP |
Affected:
V3.1.5 , < *
(custom)
|
guessed |
Date Public
2024-07-01 08:00
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]
}
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{
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"value": "A security regression (CVE-2006-5051) was discovered in OpenSSH\u0027s server (sshd). There is a race condition which can lead sshd to handle some signals in an unsafe manner. An unauthenticated, remote attacker may be able to trigger it by failing to authenticate within a set time period."
},
{
"lang": "es",
"value": "Se encontr\u00f3 una condici\u00f3n de ejecuci\u00f3n del controlador de se\u00f1ales en el servidor de OpenSSH (sshd), donde un cliente no se autentica dentro de los segundos de LoginGraceTime (120 de forma predeterminada, 600 en versiones anteriores de OpenSSH), luego se llama al controlador SIGALRM de sshd de forma asincr\u00f3nica. Sin embargo, este controlador de se\u00f1ales llama a varias funciones que no son seguras para se\u00f1ales as\u00edncronas, por ejemplo, syslog()."
}
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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