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一、漏洞信息
漏洞编号：CVE-2023-4194
漏洞归属组件：kernel
漏洞归属的版本：4.19.140,4.19.194,4.19.90,5.10.0,6.1.0,6.1.14,6.1.19,6.1.5,6.1.6,6.1.8
CVSS V3.0分值：
BaseScore：5.5 Medium
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
漏洞简述：
A flaw was found in the Linux kernel s TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ( tun: tun_chr_open(): correctly initialize socket uid ), - 66b2c338adce ( tap: tap_open(): correctly initialize socket uid ), pass inode->i_uid to sock_init_data_uid() as the last parameter and that turns out to not be accurate.
漏洞公开时间：2023-08-07 22:15:00
漏洞创建时间：2023-08-14 13:46:27
漏洞详情参考链接：
https://nvd.nist.gov/vuln/detail/CVE-2023-4194
漏洞分析指导链接：
https://gitee.com/openeuler/cve-manager/blob/master/cve-vulner-manager/doc/md/manual.md
漏洞数据来源:
openBrain开源漏洞感知系统
漏洞补丁信息：
无
二、漏洞分析结构反馈
影响性分析说明：
A flaw was found in the Linux kernel s TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ( tun: tun_chr_open(): correctly initialize socket uid ), - 66b2c338adce ( tap: tap_open(): correctly initialize socket uid ), pass inode->i_uid to sock_init_data_uid() as the last parameter and that turns out to not be accurate.
openEuler评分：
5.5
Vector：CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
受影响版本排查(受影响/不受影响)：
1.openEuler-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP3:受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP3:否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
三、漏洞修复
安全公告链接：https://www.openeuler.org/zh/security/safety-bulletin/detail/?id=openEuler-SA-2023-1588
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| 参考网址 | 关联pr | 状态 | 补丁链接 |
|---|---|---|---|
| https://nvd.nist.gov/vuln/detail/CVE-2023-4194 | |||
| https://ubuntu.com/security/CVE-2023-4194 | None | None | https://discourse.ubuntu.com/c/ubuntu-pro |
| https://www.opencve.io/cve/CVE-2023-4194 | |||
| https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2023-4194 | |||
| https://security-tracker.debian.org/tracker/CVE-2023-4194 |
说明：补丁链接仅供初步排查参考，实际可用性请人工再次确认，补丁下载验证可使用CVE补丁工具。
若补丁不准确，烦请在此issue下评论 '/report-patch 参考网址 补丁链接1,补丁链接2' 反馈正确信息，便于我们不断优化工具，不胜感激。
如 /report-patch https://security-tracker.debian.org/tracker/CVE-2021-3997 https://github.com/systemd/systemd/commit/5b1cf7a9be37e20133c0208005274ce4a5b5c6a1
CVE-2023-4194
I7QXHX
影响性分析说明：
A flaw was found in the Linux kernel s TUN/TAP functionality. This issue could allow a local user to bypass network filters and gain unauthorized access to some resources. The original patches fixing CVE-2023-1076 are incorrect or incomplete. The problem is that the following upstream commits - a096ccca6e50 ( tun: tun_chr_open(): correctly initialize socket uid ), - 66b2c338adce ( tap: tap_open(): correctly initialize socket uid ), pass inode->i_uid to sock_init_data_uid() as the last parameter and that turns out to not be accurate.
openEuler评分:(评分和向量)
5.5
CVSS：3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N
创建时间：2023-08-07
受影响版本排查(受影响/不受影响):
1.openEuler-20.03-LTS-SP1(4.19.90):受影响
2.openEuler-20.03-LTS-SP3(4.19.90):受影响
3.openEuler-22.03-LTS:受影响
4.openEuler-22.03-LTS-SP1:受影响
5.openEuler-22.03-LTS-SP2:受影响
修复是否涉及abi变化(是/否)：
1.openEuler-20.03-LTS-SP1(4.19.90):否
2.openEuler-20.03-LTS-SP3(4.19.90):否
3.openEuler-22.03-LTS:否
4.openEuler-22.03-LTS-SP1:否
5.openEuler-22.03-LTS-SP2:否
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