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MitreCVE-2019-20172

HistoryDec 31, 2019 - 3:15 a.m.

CVE-2019-20172

2019-12-3103:15:10

CWE-119

mitre

web.nvd.nist.gov

140

cve-2019-20172

serenityos

kernel

memorymanager

nvd

security

vulnerability

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

Percentile

5.1%

JSON

Kernel/VM/MemoryManager.cpp in SerenityOS before 2019-12-30 does not reject syscalls with pointers into the kernel-only virtual address space, which allows local users to gain privileges by overwriting a return address that was found on the kernel stack.

Affected configurations

Nvd

Node

serenityosserenityosRange<2019-12-30

VendorProductVersionCPE
serenityosserenityos*cpe:2.3:o:serenityos:serenityos:*:*:*:*:*:*:*:*

Vendor	Product	Version	CPE
serenityos	serenityos	*	cpe:2.3:o:serenityos:serenityos::::::::

References

github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom

github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9

CVSS2

4.6

Attack Vector

LOCAL

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

CVSS3

7.8

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

AI Score

7.5

Confidence

High

EPSS

Percentile

5.1%

JSON

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