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CVE-2020-11498

HIGH
8.8
CVSS Score
Published: April 2, 2020 at 10:13 PM UTC
Updated: June 17, 2026 at 02:50 AM UTC
1 product affected across 1 vendorNebula

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Severity
HIGH8.8
Exploit prediction
EPSS 3%

Description

Slack Nebula through 1.1.0 contains a relative path vulnerability that allows a low-privileged attacker to execute code in the context of the root user via tun_darwin.go or tun_windows.go. A user can also use Nebula to execute arbitrary code in the user's own context, e.g., for user-level persistence or to bypass security controls. NOTE: the vendor states that this "requires a high degree of access and other preconditions that are tough to achieve."

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Nebula· Slack
95%
v ≤ 1.1.0

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

x_refsource_MISCExploitThird Party Advisory
Source: [email protected]
http://www.pwn3d.org/posts/7918501-slack-nebula-relative-path-bug-bounty-disclosure
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/slackhq/nebula/pull/191

CVSS

8.8HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-22

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