CVE-2023-52832

wifi: mac80211: don't return unset power in ieee80211_get_tx_power()

Severity Score

9.1

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

In the Linux kernel, the following vulnerability has been resolved:

wifi: mac80211: don't return unset power in ieee80211_get_tx_power()

We can get a UBSAN warning if ieee80211_get_tx_power() returns the
INT_MIN value mac80211 internally uses for "unset power level".

UBSAN: signed-integer-overflow in net/wireless/nl80211.c:3816:5
-2147483648 * 100 cannot be represented in type 'int'
CPU: 0 PID: 20433 Comm: insmod Tainted: G WC OE
Call Trace:
dump_stack+0x74/0x92
ubsan_epilogue+0x9/0x50
handle_overflow+0x8d/0xd0
__ubsan_handle_mul_overflow+0xe/0x10
nl80211_send_iface+0x688/0x6b0 [cfg80211]
[...]
cfg80211_register_wdev+0x78/0xb0 [cfg80211]
cfg80211_netdev_notifier_call+0x200/0x620 [cfg80211]
[...]
ieee80211_if_add+0x60e/0x8f0 [mac80211]
ieee80211_register_hw+0xda5/0x1170 [mac80211]

In this case, simply return an error instead, to indicate
that no data is available.

En el kernel de Linux, se ha resuelto la siguiente vulnerabilidad: wifi: mac80211: no devolver energía no configurada en ieee80211_get_tx_power(). Podemos obtener una advertencia de UBSAN si ieee80211_get_tx_power() devuelve el valor INT_MIN que mac80211 usa internamente para "nivel de energía no configurada". UBSAN: desbordamiento de entero con signo en net/wireless/nl80211.c:3816:5 -2147483648 * 100 no se puede representar en el tipo 'int' CPU: 0 PID: 20433 Comm: insmod Contaminado: G WC OE Call Trace: dump_stack+ 0x74/0x92 ubsan_epilogue+0x9/0x50 handle_overflow+0x8d/0xd0 __ubsan_handle_mul_overflow+0xe/0x10 nl80211_send_iface+0x688/0x6b0 [cfg80211] [...] cfg80211_register_wdev+0x78/0xb0 cfg80211] cfg80211_netdev_notifier_call+0x200/0x620 [cfg80211] [.. .] ieee80211_if_add+0x60e/0x8f0 [mac80211] ieee80211_register_hw+0xda5/0x1170 [mac80211] En este caso, simplemente devuelva un error para indicar que no hay datos disponibles.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

None

Automatable

Yes

Tech. Impact

Partial

* Organization's Worst-case Scenario

Timeline

2024-05-21 CVE Reserved
2024-05-21 CVE Published
2024-05-22 EPSS Updated
2024-08-02 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-190: Integer Overflow or Wraparound
CWE-920: Improper Restriction of Power Consumption

CAPEC

References (11)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC
https://git.kernel.org/stable/c/1571120c44dbe5757aee1612c5b6097cdc42710f	2023-11-28
https://git.kernel.org/stable/c/298e767362cade639b7121ecb3cc5345b6529f62	2023-11-28
https://git.kernel.org/stable/c/efeae5f4972f75d50002bc50eb112ab9e7069b18	2023-11-28
https://git.kernel.org/stable/c/717de20abdcd1d4993fa450e28b8086a352620ea	2023-11-28
https://git.kernel.org/stable/c/21a0f310a9f3bfd2b4cf4f382430e638607db846	2023-11-28
https://git.kernel.org/stable/c/2be24c47ac19bf639c48c082486c08888bd603c6	2023-11-28
https://git.kernel.org/stable/c/adc2474d823fe81d8da759207f4f1d3691aa775a	2023-11-28
https://git.kernel.org/stable/c/5a94cffe90e20e8fade0b9abd4370bd671fe87c7	2023-11-28
https://git.kernel.org/stable/c/e160ab85166e77347d0cbe5149045cb25e83937f	2023-09-13

URL	Date	SRC
https://access.redhat.com/security/cve/CVE-2023-52832	2024-08-08
https://bugzilla.redhat.com/show_bug.cgi?id=2282645	2024-08-08

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.14.331 Search vendor "Linux" for product "Linux Kernel" and version " < 4.14.331"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 4.19.300 Search vendor "Linux" for product "Linux Kernel" and version " < 4.19.300"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.4.262 Search vendor "Linux" for product "Linux Kernel" and version " < 5.4.262"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.10.202 Search vendor "Linux" for product "Linux Kernel" and version " < 5.10.202"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 5.15.140 Search vendor "Linux" for product "Linux Kernel" and version " < 5.15.140"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.1.64 Search vendor "Linux" for product "Linux Kernel" and version " < 6.1.64"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.5.13 Search vendor "Linux" for product "Linux Kernel" and version " < 6.5.13"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.6.3 Search vendor "Linux" for product "Linux Kernel" and version " < 6.6.3"		en		Affected
Linux Search vendor "Linux"		Linux Kernel Search vendor "Linux" for product "Linux Kernel"				< 6.7 Search vendor "Linux" for product "Linux Kernel" and version " < 6.7"		en		Affected