CVE-2020-8024

Privilege escalation via uucp-writable executable paths

Published Jun 29, 2020 · Updated Sep 17, 2024

Incorrect default permissions in hylafax+ on openSUSE Leap 15.1, Leap 15.2, and Factory allow local users controlling uucp to escalate. The package leaves /etc/hylafax/faxmail/application and paths under /var/spool/hylafax writable by uucp, permitting executable replacement before another user invokes a HylaFAX binary. Control of uucp is required, and code then runs with the privileges of the user who calls the replaced executable, often root.

CVSS severity5.3
Medium
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect default permissions in hylafax+ on openSUSE Leap 15.1, Leap 15.2, and Factory allow local users controlling uucp to escalate. The package leaves /etc/hylafax/faxmail/application and paths under /var/spool/hylafax writable by uucp, permitting executable replacement before another user invokes a HylaFAX binary. Control of uucp is required, and code then runs with the privileges of the user who calls the replaced executable, often root.

The record

CVE
CVE-2020-8024
Published
Jun 29, 2020
Updated
Sep 17, 2024
Vendor
OpenSUSE
Product
openSUSE Leap
Classifications
CWE-276, T1574
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 29, 2020CVE publishedPublication date reported by the CVE source.
  2. Sep 17, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=hylafax+ <=5.6.1-lp151.3.7
  2. Affected versionversion=hylafax+ <7.0.2-lp152.2.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

OpenSUSE · openSUSE Leapversion=hylafax+ <=5.6.1-lp151.3.7; version=hylafax+ <7.0.2-lp152.2.1
OpenSUSE · openSUSE Factoryversion=hylafax+ <7.0.2-2.1

Published CVSS scores

6.8NIST NVDAV:N/AC:M/Au:N/C:P/I:P/A:P
5.3NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-276Incorrect Default Permissions
T1574Hijack Execution Flow

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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