CVE-2019-20172

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.

CVSS v3.0 7.8 HIGH
CVSS v2.0 4.6 MEDIUM

7.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 1.8 / Impact : 5.9

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

4.6^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 3.9 / Impact : 6.4

Access Vector LOCAL

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/Fire30/CTF-WRITEUPS/tree/master/36c3_ctf/wisdom	Exploit Third Party Advisory
https://github.com/SerenityOS/serenity/commit/0fc24fe2564736689859e7edfa177a86dac36bf9	Patch Third Party Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:o:serenityos:serenity:*:*:*:*:*:*:*:*

Information

Published : 2019-12-31 03:15

Updated : 2020-08-24 17:37

NVD link : CVE-2019-20172

Mitre link : CVE-2019-20172

JSON object : View

Products Affected

serenityos

serenity

CWE

CWE-119

Improper Restriction of Operations within the Bounds of a Memory Buffer

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