CVE-2019-7306Network attack vector

Information disclosure via Apport screenrc attachment

Published Apr 17, 2020 · Updated Sep 17, 2024

Information disclosure in Byobu before 5.128-0ubuntu1 allows remote attackers to obtain sensitive .screenrc contents through Apport. The source_byobu.py package hook attaches the local user's .screenrc to an Apport crash report without excluding configuration secrets. Exposure requires the local user to submit the generated report; disclosed data can include private hostnames, usernames, and passwords.

CVSS severity4.3
Medium
EPSS probability1.66%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Byobu before 5.128-0ubuntu1 allows remote attackers to obtain sensitive .screenrc contents through Apport. The source_byobu.py package hook attaches the local user's .screenrc to an Apport crash report without excluding configuration secrets. Exposure requires the local user to submit the generated report; disclosed data can include private hostnames, usernames, and passwords.

The record

CVE
CVE-2019-7306
Published
Apr 17, 2020
Updated
Sep 17, 2024
Vendor
Canonical
Product
Byobu
Classifications
CWE-552
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 17, 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=unspecified <5.128-0ubuntu1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Canonical · Byobuversion=unspecified <5.128-0ubuntu1

Published CVSS scores

5.0NIST NVDAV:N/AC:L/Au:N/C:P/I:N/A:N
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
4.3Canonical Ltd.CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-552Files or Directories Accessible to External Parties

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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