CVE-2023-3777— Use-after-free in Linux kernel's netfilter: nf_tables component
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I. Basic Information for CVE-2023-3777
Vulnerability Information
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Vulnerability Title
Use-after-free in Linux kernel's netfilter: nf_tables component
Source: NVD (National Vulnerability Database)
Vulnerability Description
A use-after-free vulnerability in the Linux kernel's netfilter: nf_tables component can be exploited to achieve local privilege escalation. When nf_tables_delrule() is flushing table rules, it is not checked whether the chain is bound and the chain's owner rule can also release the objects in certain circumstances. We recommend upgrading past commit 6eaf41e87a223ae6f8e7a28d6e78384ad7e407f8.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
释放后使用
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 资源管理错误漏洞
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 netfilter 子系统在某些情况下无法正确处理表规则刷新。
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
II. Public POCs for CVE-2023-3777
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Same Patch Batch · Linux · 2023-09-06 · 8 CVEs total
| CVE-2023-4623 | 7.8 HIGH | Use-after-free in Linux kernel's net/sched: sch_hfsc (HFSC qdisc traffic control) componen |
| CVE-2023-4622 | 7.8 HIGH | Use-after-free in Linux kernel's af_unix component |
| CVE-2023-4244 | 7.8 HIGH | Use-after-free in Linux kernel's netfilter: nf_tables component |
| CVE-2023-4208 | 7.8 HIGH | Use-after-free in Linux kernel's net/sched: cls_u32 component |
| CVE-2023-4207 | 7.8 HIGH | Use-after-free in Linux kernel's net/sched: cls_fw component |
| CVE-2023-4206 | 7.8 HIGH | Use-after-free in Linux kernel's net/sched: cls_route component |
| CVE-2023-4015 | 7.8 HIGH | Use-after-free in Linux kernel's netfilter: nf_tables component |
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V. Comments for CVE-2023-3777
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