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K
zdiGwangun Jung at THEORIZDI-22-1457
HistoryOct 21, 2022 - 12:00 a.m.

Linux Kernel nftables Uninitialized Variable Information Disclosure Vulnerability

2022-10-2100:00:00
Gwangun Jung at THEORI
www.zerodayinitiative.com
8

5.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L

2.9 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:M/C:P/I:N/A:P

0.0004 Low

EPSS

Percentile

14.6%

This vulnerability allows local attackers to disclose sensitive information on affected installations of the Linux Kernel. An attacker must first obtain the ability to execute high-privileged code on the target system in order to exploit this vulnerability. The specific flaw exists within the nft_osf_eval function. The issue results from the lack of proper initialization of memory prior to accessing it. An attacker can leverage this in conjunction with other vulnerabilities to execute arbitrary code in the context of the kernel.

5.1 Medium

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

HIGH

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

NONE

Availability Impact

LOW

CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:L

2.9 Low

CVSS2

Access Vector

LOCAL

Access Complexity

LOW

Authentication

MULTIPLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:L/AC:L/Au:M/C:P/I:N/A:P

0.0004 Low

EPSS

Percentile

14.6%