CVE-2023-3772— Kernel: xfrm: null pointer dereference in xfrm_update_ae_params()
Quick assessment
Affected
Red Hat Red Hat Enterprise Linux 8
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 XFRM 子系统存在一个漏洞，该漏洞允许具有CAP_NET_ADMIN特权的恶意用户在xfrm_update_ae_params()函数中触发空指针取消引用，导致可能的内核崩溃和拒绝服务攻击。
Possible ATT&CK Techniques 2 AI
T1068 · Exploitation for Privilege Escalation T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2023-3772
Vulnerability Information
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Vulnerability Title
Kernel: xfrm: null pointer dereference in xfrm_update_ae_params()
Source: CVE Program / CVE List V5
Vulnerability Description
A flaw was found in the Linux kernel’s IP framework for transforming packets (XFRM subsystem). This issue may allow a malicious user with CAP_NET_ADMIN privileges to directly dereference a NULL pointer in xfrm_update_ae_params(), leading to a possible kernel crash and denial of service.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
空指针解引用
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 代码问题漏洞
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 XFRM 子系统存在一个漏洞，该漏洞允许具有CAP_NET_ADMIN特权的恶意用户在xfrm_update_ae_params()函数中触发空指针取消引用，导致可能的内核崩溃和拒绝服务攻击。
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 8 | 0:4.18.0-513.5.1.rt7.307.el8_9 ~ * |
cpe:/a:redhat:enterprise_linux:8::realtime
|
|
| Red Hat | Red Hat Enterprise Linux 8 | 0:4.18.0-513.5.1.el8_9 ~ * |
cpe:/o:redhat:enterprise_linux:8::baseos
|
|
| Red Hat | Red Hat Enterprise Linux 8.6 Extended Update Support | 0:4.18.0-372.87.1.el8_6 ~ * |
cpe:/o:redhat:rhel_eus:8.6::baseos
|
|
| Red Hat | Red Hat Enterprise Linux 8.8 Extended Update Support | 0:4.18.0-477.43.1.el8_8 ~ * |
cpe:/a:redhat:rhel_eus:8.8::crb
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-362.8.1.el9_3 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Enterprise Linux 9 | 0:5.14.0-362.8.1.el9_3 ~ * |
cpe:/a:redhat:enterprise_linux:9::appstream
|
|
| Red Hat | Red Hat Virtualization 4 for Red Hat Enterprise Linux 8 | 0:4.18.0-372.87.1.el8_6 ~ * |
cpe:/o:redhat:rhel_eus:8.6::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 9 | - |
cpe:/o:redhat:enterprise_linux:9
|
|
II. Public POCs for CVE-2023-3772
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POC
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No public POC found.
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Vendor Advisories for CVE-2023-3772 (8)
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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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🔗 RHSA-2023:6901 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
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🔗 RHSA-2023:7077 - Security Advisory - Red Hat Customer Portal Read full article vendor-advisory x_refsource_REDHAT
Mailing List Discussions for CVE-2023-3772 (4)
Same Patch Batch · Red Hat · 2023-07-25 · 3 CVEs total
| CVE-2023-3773 | 5.5 MEDIUM | Kernel: xfrm: out-of-bounds read of xfrma_mtimer_thresh nlattr |
| CVE-2023-3637 | 4.3 MEDIUM | Openstack-neutron: unrestricted creation of security groups (fix for cve-2022-3277) |
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V. Comments for CVE-2023-3772
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