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Ubuntu LinuxOperating system · Canonical

CVE-2017-13088

MEDIUM · 5.3 CVSS v3.0 Published 2017-10-17
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
58/100
Remediation priority · Elevated
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
Wi-Fi Protected Access (WPA and WPA2) that support 802.11v allows reinstallation of the Integrity Group Temporal Key (IGTK) when processing a Wireless Network Management (WNM) Sleep Mode Response frame, allowing an attacker within radio range to replay frames from access points to clients.

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

This vulnerability in WPA/WPA2 with 802.11v support allows reinstallation of the Integrity Group Temporal Key (IGTK) when processing WNM Sleep Mode Response frames. An attacker within radio range can exploit this to replay frames from access points to clients, compromising the integrity of wireless communications.

MitigationApply vendor firmware updates to affected access points and client devices that support 802.11v WNM Sleep Mode functionality. Until patches are available, consider disabling 802.11v WNM features in device configurations where supported.

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:= 14.04= 16.04= 17.04
Debian LinuxOperating system
Affected:= 8.0= 9.0
FreeBSDOperating system
Affected:all versions= 10= 10.4= 11= 11.1
Enterprise Linux DesktopOperating system
Affected:= 7
Enterprise Linux ServerOperating system
Affected:= 7
LeapOperating system
Affected:= 42.2= 42.3
HostapdApplication
Affected:= 0.2.4= 0.2.5= 0.2.6= 0.2.8= 0.3.7= 0.3.9= 0.3.10= 0.3.11= 0.4.7= 0.4.8= 0.4.9= 0.4.10
Wpa SupplicantApplication
Affected:= 0.2.4= 0.2.5= 0.2.6= 0.2.7= 0.2.8= 0.3.7= 0.3.8= 0.3.9= 0.3.10= 0.3.11= 0.4.7= 0.4.8

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
Adjacent
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

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

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 wpa_supplicant version
    Run 'wpa_supplicant -v' or 'dpkg -l wpa_supplicant' on Debian/Ubuntu, 'rpm -q wpa_supplicant' on RHEL, or check the package version installed on the system
    Affected if The installed version matches one of the affected versions listed: 0.2.4 through 0.4.10 (specifically 0.2.4-0.2.8, 0.3.7-0.3.11, 0.4.7-0.4.8)
  2. Check hostapd version
    Run 'hostapd -v' or check the installed package version with 'dpkg -l hostapd' on Debian/Ubuntu, 'rpm -q hostapd' on RHEL
    Affected if The installed version matches one of the affected versions listed: 0.2.4-0.2.6, 0.2.8, 0.3.7, 0.3.9-0.3.11, 0.4.7-0.4.10
  3. Identify if 802.11v WNM features are in use
    Examine wireless configuration files (commonly in /etc/wpa_supplicant.conf, /etc/network/interfaces, or NetworkManager configs) for lines containing 'wnm', '80211v', or 'wireless_nan' directives. Also check if the wireless interface is connecting to an access point that advertises WNM capabilities
    Affected if 802.11v WNM Sleep Mode functionality is enabled or the connected AP supports and advertises WNM features
  4. Check FreeBSD wireless stack version
    On FreeBSD systems, run 'uname -a' to identify the FreeBSD version (10, 10.4, 11, or 11.1 are affected; all versions are listed as affected)
    Affected if Running any affected FreeBSD version (10.x, 11.x) with wireless networking enabled

A system is affected if it runs a vulnerable version of wpa_supplicant or hostapd (as listed) AND uses WPA/WPA2 with 802.11v WNM Sleep Mode functionality enabled, allowing an attacker within radio range to replay frames.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor firmware updates to affected access points and client devices that support 802.11v WNM Sleep Mode functionality. Until patches are available, consider disabling 802.11v WNM features in device configurations where supported.

Fix this in Ubuntu Linux Scoped from the published advisory
  • Consultation8.0 h
  • Implementation12.0 h
  • Testing16.0 h
  • Review / QA8.0 h
44.0 hours of engineering $7,600
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Scan for this in your stack

Free · runs locally
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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-2017-13088 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