dbcve.org
Ubuntu LinuxOperating system · Canonical

CVE-2015-1330

MEDIUM · 6.8 CVSS v2.0 Published 2015-07-01
Fix available
A fix is available. Upgrade to after 0.86 or later.
See remediation →
77/100
Remediation priority · High
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
unattended-upgrades before 0.86.1 does not properly authenticate packages when the (1) force-confold or (2) force-confnew dpkg options are enabled in the DPkg::Options::* apt configuration, which allows remote man-in-the-middle attackers to upload and execute arbitrary packages via unspecified vectors.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · high confidence

unattended-upgrades before version 0.86.1 fails to properly authenticate packages when force-confold or force-confnew dpkg options are configured in DPkg::Options, allowing remote man-in-the-middle attackers to inject and execute arbitrary packages by bypassing the package authentication mechanism.

MitigationUpgrade unattended-upgrades to version 0.86.1 or later, and ensure force-confold/force-confnew options are not enabled in DPkg::Options unless absolutely necessary.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Ubuntu LinuxOperating system
Affected:= 12.04= 14.04= 14.10= 15.04
Unattended UpgradesApplication
Affected:<= 0.86

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
M
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial

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

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Check installed unattended-upgrades version
    Run 'dpkg -l unattended-upgrades' or 'apt-cache policy unattended-upgrades' to retrieve the installed version number
    Affected if version is below 0.86.1 (or unknown/0.86 and below on Debian)
  2. Locate DPkg::Options configuration files
    Inspect files in /etc/apt/apt.conf.d/ and /etc/dpkg/dpkg.conf.d/ for any configuration containing 'DPkg::Options'
    Affected if configuration files exist in these directories
  3. Verify force-confold or force-confnew are not enabled
    Search the DPkg::Options configuration for the strings 'force-confold' or 'force-confnew' (case-insensitive)
    Affected if either 'force-confold' or 'force-confnew' appears in DPkg::Options setting

User is affected only if unattended-upgrades version is below 0.86.1 AND force-confold or force-confnew is configured in DPkg::Options

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

From vendor data
Upgrade available Upgrade to a release after 0.86
Interim mitigation

Upgrade unattended-upgrades to version 0.86.1 or later, and ensure force-confold/force-confnew options are not enabled in DPkg::Options unless absolutely necessary.

Fix this in Ubuntu Linux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.

Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2015-1330 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data