CVE-2020-15258

In Wire before 3.20.x, `shell.openExternal` was used without checking the URL. This vulnerability allows an attacker to execute code on the victims machine by sending messages containing links with arbitrary protocols. The victim has to interact with the link and sees the URL that is opened. The issue was patched by implementing a helper function which checks if the URL's protocol is common. If it is common, the URL will be opened externally. If not, the URL will not be opened and a warning appears for the user informing them that a probably insecure URL was blocked from being executed. The issue is patched in Wire 3.20.x. More technical details about exploitation are available in the linked advisory.

CVSS v3.0 8.0 HIGH
CVSS v2.0 6.0 MEDIUM

8.0^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.0^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:S/C:P/I:P/A:P

Exploitability : 6.8 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://github.com/wireapp/wire-desktop/security/advisories/GHSA-5gpx-9976-ggpm	Exploit Third Party Advisory
https://benjamin-altpeter.de/shell-openexternal-dangers/	Exploit Third Party Advisory
https://github.com/wireapp/wire-desktop/commit/b3705fffa75a03f055530f55a754face5ac0623b	Patch Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:wire:wire:*:*:*:*:*:*:*:*

Information

Published : 2020-10-16 10:15

Updated : 2020-10-28 09:38

NVD link : CVE-2020-15258

Mitre link : CVE-2020-15258

JSON object : View

CWE

CWE-20

Improper Input Validation

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Products Affected

wire

wire

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