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CVE-2024-47659— smack: tcp: ipv4, fix incorrect labeling

Quick assessment

Affected
Linux Linux
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。攻击者利用该漏洞导致标签错误和未授权的写入。

CVSS 9.1 · Critical EPSS 0.78% · P55

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux 07feee8f812f7327a46186f7604df312c8c81962< d3f56c653c65f170b172d3c23120bc64ada645d8 affected
07feee8f812f7327a46186f7604df312c8c81962< 5b4b304f196c070342e32a4752e1fa2e22fc0671 affected
07feee8f812f7327a46186f7604df312c8c81962< a948ec993541db4ef392b555c37a1186f4d61670 affected
07feee8f812f7327a46186f7604df312c8c81962< 0aea09e82eafa50a373fc8a4b84c1d4734751e2c affected
07feee8f812f7327a46186f7604df312c8c81962< 0776bcf9cb6de46fdd94d10118de1cf9b05f83b9 affected
07feee8f812f7327a46186f7604df312c8c81962< 4be9fd15c3c88775bdf6fa37acabe6de85beebff affected
07feee8f812f7327a46186f7604df312c8c81962< d3703fa94116fed91f64c7d1c7d284fb4369070f affected
07feee8f812f7327a46186f7604df312c8c81962< 2fe209d0ad2e2729f7e22b9b31a86cc3ff0db550 affected
… +10 more rows
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I. Basic Information for CVE-2024-47659

Vulnerability Information
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Vulnerability Title
smack: tcp: ipv4, fix incorrect labeling
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: smack: tcp: ipv4, fix incorrect labeling Currently, Smack mirrors the label of incoming tcp/ipv4 connections: when a label 'foo' connects to a label 'bar' with tcp/ipv4, 'foo' always gets 'foo' in returned ipv4 packets. So, 1) returned packets are incorrectly labeled ('foo' instead of 'bar') 2) 'bar' can write to 'foo' without being authorized to write. Here is a scenario how to see this: * Take two machines, let's call them C and S, with active Smack in the default state (no settings, no rules, no labeled hosts, only builtin labels) * At S, add Smack rule 'foo bar w' (labels 'foo' and 'bar' are instantiated at S at this moment) * At S, at label 'bar', launch a program that listens for incoming tcp/ipv4 connections * From C, at label 'foo', connect to the listener at S. (label 'foo' is instantiated at C at this moment) Connection succeedes and works. * Send some data in both directions. * Collect network traffic of this connection. All packets in both directions are labeled with the CIPSO of the label 'foo'. Hence, label 'bar' writes to 'foo' without being authorized, and even without ever being known at C. If anybody cares: exactly the same happens with DCCP. This behavior 1st manifested in release 2.6.29.4 (see Fixes below) and it looks unintentional. At least, no explanation was provided. I changed returned packes label into the 'bar', to bring it into line with the Smack documentation claims.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会的开源操作系统Linux所使用的内核。 Linux kernel存在安全漏洞。攻击者利用该漏洞导致标签错误和未授权的写入。
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
Linux Linux 07feee8f812f7327a46186f7604df312c8c81962 ~ d3f56c653c65f170b172d3c23120bc64ada645d8 -
Linux Linux 2.6.30 -

II. Public POCs for CVE-2024-47659

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III. Intelligence Information for CVE-2024-47659

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Same Patch Batch · Linux · 2024-10-09 · 17 CVEs total

CVE-2024-47668 7.8 HIGH lib/generic-radix-tree.c: Fix rare race in __genradix_ptr_alloc()
CVE-2024-47670 7.8 HIGH ocfs2: add bounds checking to ocfs2_xattr_find_entry()
CVE-2024-47658 7.5 HIGH crypto: stm32/cryp - call finalize with bh disabled
CVE-2024-47667 7.3 HIGH PCI: keystone: Add workaround for Errata #i2037 (AM65x SR 1.0)
CVE-2024-47669 7.3 HIGH nilfs2: fix state management in error path of log writing function
CVE-2024-46870 drm/amd/display: Disable DMCUB timeout for DCN35
CVE-2024-46871 drm/amd/display: Correct the defined value for AMDGPU_DMUB_NOTIFICATION_MAX
CVE-2024-47660 fsnotify: clear PARENT_WATCHED flags lazily
CVE-2024-47662 drm/amd/display: Remove register from DCN35 DMCUB diagnostic collection
CVE-2024-47661 drm/amd/display: Avoid overflow from uint32_t to uint8_t
CVE-2024-47663 staging: iio: frequency: ad9834: Validate frequency parameter value
CVE-2024-47664 spi: hisi-kunpeng: Add verification for the max_frequency provided by the firmware
CVE-2024-47665 i3c: mipi-i3c-hci: Error out instead on BUG_ON() in IBI DMA setup
CVE-2024-47666 scsi: pm80xx: Set phy->enable_completion only when we wait for it
CVE-2024-47671 USB: usbtmc: prevent kernel-usb-infoleak
CVE-2024-47673 wifi: iwlwifi: mvm: pause TCM when the firmware is stopped

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2024-47659

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