CVE-2023-39191— Kernel: ebpf: insufficient stack type checks in dynptr
Quick assessment
Affected
Red Hat Red Hat Enterprise Linux 9
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在不正确的输入验证，允许具有CAP_BPF权限的攻击者升级权限并在内核上下文中执行任意代码。
Possible ATT&CK Techniques 2 AI
T1055 · Process Injection T1068 · Exploitation for Privilege Escalation
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I. Basic Information for CVE-2023-39191
Vulnerability Information
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Vulnerability Title
Kernel: ebpf: insufficient stack type checks in dynptr
Source: CVE Program / CVE List V5
Vulnerability Description
An improper input validation flaw was found in the eBPF subsystem in the Linux kernel. The issue occurs due to a lack of proper validation of dynamic pointers within user-supplied eBPF programs prior to executing them. This may allow an attacker with CAP_BPF privileges to escalate privileges and execute arbitrary code in the context of the kernel.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞，该漏洞源于存在不正确的输入验证，允许具有CAP_BPF权限的攻击者升级权限并在内核上下文中执行任意代码。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-362.8.1.el9_3 ~ * |
cpe:/a:redhat:enterprise_linux:9::crb
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-362.8.1.el9_3 ~ * |
cpe:/a:redhat:enterprise_linux:9::crb
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | 0:5.14.0-284.48.1.el9_2 ~ * |
cpe:/o:redhat:rhel_eus:9.2::baseos
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | 0:5.14.0-284.48.1.rt14.333.el9_2 ~ * |
cpe:/a:redhat:rhel_eus:9.2::realtime
|
|
| Red Hat | Red Hat Enterprise Linux 9.2 Extended Update Support | - |
cpe:/o:redhat:rhel_eus:9.2::baseos
|
|
| 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 7 | - |
cpe:/o:redhat:enterprise_linux:7
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 8 | - |
cpe:/o:redhat:enterprise_linux:8
|
|
| Red Hat | Red Hat Enterprise Linux 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
II. Public POCs for CVE-2023-39191
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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Vendor Advisories for CVE-2023-39191 (7)
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🔗 RHSA-2023:6583 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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Same Patch Batch · Red Hat · 2023-10-04 · 8 CVEs total
| CVE-2023-4586 | 7.4 HIGH | Hotrod-client: hot rod client does not enable hostname validation when using tls that lea |
| CVE-2023-3971 | 7.3 HIGH | Controller: html injection in custom login info |
| CVE-2023-4237 | 7.3 HIGH | Platform: ec2_key module prints out the private key directly to the standard output |
| CVE-2023-4380 | 6.3 MEDIUM | Platform: token exposed at importing project |
| CVE-2023-3428 | 6.2 MEDIUM | Imagemagick: heap-buffer-overflow in coders/tiff.c |
| CVE-2023-3576 | 5.5 MEDIUM | Libtiff: memory leak in tiffcrop.c |
| CVE-2023-2422 | 5.5 MEDIUM | Keycloak: oauth client impersonation |
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V. Comments for CVE-2023-39191
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