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Debian LinuxOperating system · Debian

CVE-2018-5130

HIGH · 8.8 CVSS v3.0 Published 2018-06-11
Fix available
A fix is available. Upgrade to 52.7.0 / 59.0 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

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
When packets with a mismatched RTP payload type are sent in WebRTC connections, in some circumstances a potentially exploitable crash is triggered. This vulnerability affects Firefox ESR < 52.7 and Firefox < 59.

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

A vulnerability in Firefox's WebRTC implementation allows remote attackers to cause a potentially exploitable crash by sending RTP packets with mismatched payload types. This occurs due to improper handling of RTP payload type mismatches in the WebRTC connection handling code.

MitigationUpdate Firefox to version 59 or later (or Firefox ESR 52.7+) to patch the vulnerability. Organizations should deploy browser updates through their patch management systems and verify WebRTC functionality post-update.

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
Debian LinuxOperating system
Affected:= 7.0= 8.0= 9.0
Enterprise Linux DesktopOperating system
Affected:= 6.0= 7.0
Enterprise Linux ServerOperating system
Affected:= 6.0= 7.0
Enterprise Linux Server AusOperating system
Affected:= 7.4
Enterprise Linux Server EusOperating system
Affected:= 7.4= 7.5
Enterprise Linux WorkstationOperating system
Affected:= 6.0= 7.0
Ubuntu LinuxOperating system
Affected:= 14.04= 16.04= 17.10
FirefoxWeb browser
Affected:< 52.7.0< 59.0

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
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

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 Firefox version
    Run 'firefox --version' in terminal, or open Firefox and go to Help > About Firefox, or check /usr/lib/firefox*/firefox version file
    Affected if Version is below 52.7.0 for ESR releases, or below 59.0 for standard releases
  2. Confirm Firefox release channel
    Check Help > About Firefox to identify if running Stable, Beta, or ESR release
    Affected if ESR versions below 52.7.0 or standard versions below 59.0 are affected
  3. Check WebRTC status in Firefox
    Enter 'about:config' in Firefox address bar, then search for 'media.peerconnection.enabled'
    Affected if media.peerconnection.enabled is set to true (WebRTC enabled)
  4. Verify OS distribution and version
    Run 'cat /etc/os-release' on Debian/Ubuntu or 'cat /etc/redhat-release' on RHEL systems
    Affected if Running Debian 7.0, 8.0, or 9.0; Ubuntu 14.04, 16.04, or 17.10; or RHEL 6.x/7.x with vulnerable Firefox

If Firefox version is below 52.7.0 (ESR) or below 59.0 (standard), and WebRTC is enabled, the environment is affected by this vulnerability.

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 52.7.0 / 59.0 or later
Fixed in 52.7.059.0
Interim mitigation

Update Firefox to version 59 or later (or Firefox ESR 52.7+) to patch the vulnerability. Organizations should deploy browser updates through their patch management systems and verify WebRTC functionality post-update.

Fix this in Debian Linux Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

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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-2018-5130 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