CVE-2023-52572— Linux kernel 安全漏洞
一分钟漏洞结论
影响对象
Linux Linux
利用判断
尚无明确在野利用证据，仍需结合暴露面评估
建议动作
优先检查厂商安全公告和参考链接中的修复版本；无法立即升级时，限制受影响服务暴露并加强监测。
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，该漏洞源于内存释放后重用。
可能的 ATT&CK 技术 1 AI
T1203 · Exploitation for Client Execution影响版本矩阵 14
| 厂商 | 产品 | 版本范围 | 状态 |
|---|---|---|---|
| Linux | Linux | ec637e3ffb6b978143652477c7c5f96c9519b691< fe87e2d0e6265859c659a3ef1e2559a83c5e8e68 |
affected |
ec637e3ffb6b978143652477c7c5f96c9519b691< 99960d282fba6634fa758df4124cb73ef8a77d8a |
affected | ||
ec637e3ffb6b978143652477c7c5f96c9519b691< ed3b36f351d97dacb62cd0f399e8cf79f73bd30a |
affected | ||
ec637e3ffb6b978143652477c7c5f96c9519b691< 908b3b5e97d25e879de3d1f172a255665491c2c3 |
affected | ||
ec637e3ffb6b978143652477c7c5f96c9519b691< 76569e3819e0bb59fc19b1b8688b017e627c268a |
affected | ||
ec637e3ffb6b978143652477c7c5f96c9519b691< d527f51331cace562393a8038d870b3e9916686f |
affected | ||
2.6.16 |
affected | ||
< 2.6.16 |
unaffected | ||
| … +6 条更多 | |||
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一、 漏洞 CVE-2023-52572 基础信息
漏洞信息
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Vulnerability Title
cifs: Fix UAF in cifs_demultiplex_thread()
来源: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved:
cifs: Fix UAF in cifs_demultiplex_thread()
There is a UAF when xfstests on cifs:
BUG: KASAN: use-after-free in smb2_is_network_name_deleted+0x27/0x160
Read of size 4 at addr ffff88810103fc08 by task cifsd/923
CPU: 1 PID: 923 Comm: cifsd Not tainted 6.1.0-rc4+ #45
...
Call Trace:
<TASK>
dump_stack_lvl+0x34/0x44
print_report+0x171/0x472
kasan_report+0xad/0x130
kasan_check_range+0x145/0x1a0
smb2_is_network_name_deleted+0x27/0x160
cifs_demultiplex_thread.cold+0x172/0x5a4
kthread+0x165/0x1a0
ret_from_fork+0x1f/0x30
</TASK>
Allocated by task 923:
kasan_save_stack+0x1e/0x40
kasan_set_track+0x21/0x30
__kasan_slab_alloc+0x54/0x60
kmem_cache_alloc+0x147/0x320
mempool_alloc+0xe1/0x260
cifs_small_buf_get+0x24/0x60
allocate_buffers+0xa1/0x1c0
cifs_demultiplex_thread+0x199/0x10d0
kthread+0x165/0x1a0
ret_from_fork+0x1f/0x30
Freed by task 921:
kasan_save_stack+0x1e/0x40
kasan_set_track+0x21/0x30
kasan_save_free_info+0x2a/0x40
____kasan_slab_free+0x143/0x1b0
kmem_cache_free+0xe3/0x4d0
cifs_small_buf_release+0x29/0x90
SMB2_negotiate+0x8b7/0x1c60
smb2_negotiate+0x51/0x70
cifs_negotiate_protocol+0xf0/0x160
cifs_get_smb_ses+0x5fa/0x13c0
mount_get_conns+0x7a/0x750
cifs_mount+0x103/0xd00
cifs_smb3_do_mount+0x1dd/0xcb0
smb3_get_tree+0x1d5/0x300
vfs_get_tree+0x41/0xf0
path_mount+0x9b3/0xdd0
__x64_sys_mount+0x190/0x1d0
do_syscall_64+0x35/0x80
entry_SYSCALL_64_after_hwframe+0x46/0xb0
The UAF is because:
mount(pid: 921) | cifsd(pid: 923)
-------------------------------|-------------------------------
| cifs_demultiplex_thread
SMB2_negotiate |
cifs_send_recv |
compound_send_recv |
smb_send_rqst |
wait_for_response |
wait_event_state [1] |
| standard_receive3
| cifs_handle_standard
| handle_mid
| mid->resp_buf = buf; [2]
| dequeue_mid [3]
KILL the process [4] |
resp_iov[i].iov_base = buf |
free_rsp_buf [5] |
| is_network_name_deleted [6]
| callback
1. After send request to server, wait the response until
mid->mid_state != SUBMITTED;
2. Receive response from server, and set it to mid;
3. Set the mid state to RECEIVED;
4. Kill the process, the mid state already RECEIVED, get 0;
5. Handle and release the negotiate response;
6. UAF.
It can be easily reproduce with add some delay in [3] - [6].
Only sync call has the problem since async call's callback is
executed in cifsd process.
Add an extra state to mark the mid state to READY before wakeup the
waitter, then it can get the resp safely.
来源: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
来源: CVE Program / CVE List V5
Vulnerability Type
N/A
来源: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
来源: 中国国家信息安全漏洞库 CNNVD
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，该漏洞源于内存释放后重用。
来源: 中国国家信息安全漏洞库 CNNVD
CVSS Information
N/A
来源: 中国国家信息安全漏洞库 CNNVD
Vulnerability Type
N/A
来源: 中国国家信息安全漏洞库 CNNVD
受影响产品
二、漏洞 CVE-2023-52572 的公开POC
| # | POC 描述 | 源链接 | 神龙链接 |
|---|
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CVE-2023-52572 补丁与修复 (2)
CVE-2023-52572 其他参考 (3)
同批安全公告 · Linux · 2024-03-02 · 共 57 条
| CVE-2023-52515 | 9.8 CRITICAL | Linux kernel 安全漏洞 |
| CVE-2023-52530 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52522 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52502 | 8.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2024-26621 | 8.2 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52523 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52509 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52574 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52517 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52503 | 7.8 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52513 | 7.5 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52565 | 7.1 HIGH | Linux kernel 安全漏洞 |
| CVE-2023-52562 | Linux kernel 安全漏洞 | |
| CVE-2023-52563 | Linux kernel 安全漏洞 | |
| CVE-2023-52561 | Linux kernel 安全漏洞 | |
| CVE-2023-52564 | Linux kernel 安全漏洞 | |
| CVE-2023-52582 | Linux kernel 安全漏洞 | |
| CVE-2023-52566 | Linux kernel 安全漏洞 | |
| CVE-2023-52518 | Linux kernel 安全漏洞 | |
| CVE-2023-52559 | Linux kernel 安全漏洞 |
显示前 20 条，共 57 条。 查看全部 → →
IV. Related Vulnerabilities
V. Comments for CVE-2023-52572
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