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zdiAnonymousZDI-21-340
HistoryMar 22, 2021 - 12:00 a.m.

(Pwn2Own) Synology DiskStation Manager iscsi_snapshot_comm_core Use-After-Free Remote Code Execution Vulnerability

2021-03-2200:00:00
Anonymous
www.zerodayinitiative.com
60

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.008 Low

EPSS

Percentile

81.2%

This vulnerability allows local attackers to execute arbitrary code on affected installations of Synology DS418play. Authentication is not required to exploit this vulnerability. The specific flaw exists within the iscsi_snapshot_comm_core service. The issue results from the lack of proper locking when performing operations on an object, which can cause a pointer to be reused after it has been freed. An attacker can leverage this in conjunction with other vulnerabilities to escalate privileges and execute code in the context of the current process.

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

7.5 High

CVSS2

Access Vector

NETWORK

Access Complexity

LOW

Authentication

NONE

Confidentiality Impact

PARTIAL

Integrity Impact

PARTIAL

Availability Impact

PARTIAL

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

0.008 Low

EPSS

Percentile

81.2%

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