CVE-2018-12633
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I. Basic Information for CVE-2018-12633
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue was discovered in the Linux kernel through 4.17.2. vbg_misc_device_ioctl() in drivers/virt/vboxguest/vboxguest_linux.c reads the same user data twice with copy_from_user. The header part of the user data is double-fetched, and a malicious user thread can tamper with the critical variables (hdr.size_in and hdr.size_out) in the header between the two fetches because of a race condition, leading to severe kernel errors, such as buffer over-accesses. This bug can cause a local denial of service and information leakage.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.17.2及之前版本中的drivers/virt/vboxguest/vboxguest_linux.c文件的‘vbg_misc_device_ioctl()’函数存在安全漏洞。本地攻击者可利用该漏洞造成拒绝服务，泄露信息。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
II. Public POCs for CVE-2018-12633
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | A technical case study and exploitation analysis of the Authentication Bypass vulnerability in TP-Link TL-WR840N firmware (CVE-2018-12633). | https://github.com/wiliam227user/CVE-2018-12633-TPLink-Auth-Bypass | POC Details |
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- https://bugzilla.kernel.org/show_bug.cgi?id=200131x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2018-12633
Same Patch Batch · n/a · 2018-06-22 · 20 CVEs total
| CVE-2018-12657 | SLiMS 8 Akasia Master File模块跨站脚本漏洞 | |
| CVE-2018-12689 | phpLDAPadmin 安全漏洞 | |
| CVE-2018-12688 | tinyexr 输入验证漏洞 | |
| CVE-2018-12687 | tinyexr 输入验证错误漏洞 | |
| CVE-2018-12684 | CivetWeb 缓冲区错误漏洞 | |
| CVE-2018-12678 | Portainer 安全漏洞 | |
| CVE-2018-1000201 | ruby-ffi 安全漏洞 | |
| CVE-2018-12636 | WordPress iThemes Security(better-wp-security)插件SQL注入漏洞 | |
| CVE-2018-12659 | SLiMS 8 Akasia 安全漏洞 | |
| CVE-2018-12658 | SLiMS 8 Akasia Stock Take模块跨站脚本漏洞 | |
| CVE-2018-12634 | Circontrol CirCarLife Scada 安全漏洞 | |
| CVE-2018-12656 | SLiMS 8 Akasia Membership模块跨站脚本漏洞 | |
| CVE-2018-12655 | SLiMS 8 Akasia Circulation模块跨站脚本漏洞 | |
| CVE-2018-12654 | SLiMS 8 Akasia Bibliography模块跨站脚本漏洞 | |
| CVE-2018-12649 | MISP 安全漏洞 | |
| CVE-2018-12648 | Exempi 安全漏洞 | |
| CVE-2018-12642 | Froxlor 访问控制错误漏洞 | |
| CVE-2018-12641 | GNU Binutils GNU libiberty 缓冲区错误漏洞 | |
| CVE-2018-12635 | Circontrol CirCarLife Scada 安全漏洞 |
IV. Related Vulnerabilities
Same vendor: n/a
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Open5GS PCF context.c pcf_sess_set_ipv6prefix denial of serv - CVE-2026-8223
Open5GS sm-policies Endpoint pcf_sess_sbi_discover_and_send - CVE-2026-8222
Open5GS sm-policies Endpoint nbsf-handler.c pcf_nbsf_managem
V. Comments for CVE-2018-12633
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