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Big Ip Access Policy ManagerApplication · F5

CVE-2015-8098

CRITICAL · 9.8 CVSS v3.0 Published 2016-01-12
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
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
F5 BIG-IP APM 11.4.1 before 11.4.1 HF9, 11.5.x before 11.5.3, and 11.6.0 before 11.6.0 HF4 allow remote attackers to cause a denial of service or execute arbitrary code via unspecified vectors related to processing a Citrix Remote Desktop connection through a virtual server configured with a remote desktop profile, aka an "Out-of-bounds memory vulnerability."

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 · moderate confidence

F5 BIG-IP APM contains an out-of-bounds memory vulnerability in the processing of Citrix Remote Desktop connections through virtual servers configured with remote desktop profiles. Successful exploitation allows remote attackers to cause denial of service or potentially execute arbitrary code due to improper memory access bounds checking.

MitigationApply the appropriate F5 BIG-IP hotfix: 11.4.1 HF9, 11.5.3, or 11.6.0 HF4 or later. Until patching is feasible, consider restricting access to virtual servers with remote desktop profiles or disabling the remote desktop profile functionality if not required.

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
Big Ip Access Policy ManagerApplication
Affected:= 11.2.0= 11.2.1= 11.3.0= 11.4.0= 11.5.0= 11.5.1= 11.6.0

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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 F5 BIG-IP APM version
    Run `tmsh show /sys version` or view the version in the BIG-IP Configuration Utility under System > Software Management > Installed Versions
    Affected if Version equals 11.2.0, 11.2.1, 11.3.0, 11.4.0, 11.5.0, 11.5.1, or 11.6.0
  2. Identify configured remote desktop profiles
    Run `tmsh list /ltm remote-desktop-profile all` to list all remote desktop profiles configured on the system
    Affected if Any remote desktop profiles exist in the configuration
  3. Check virtual servers using remote desktop profiles
    Run `tmsh list /ltm virtual all` and examine the output for lines containing 'remote-desktop-profile' to identify which virtual servers have the feature enabled
    Affected if Any virtual server references a remote-desktop-profile
  4. Verify Citrix RDP processing is enabled
    Examine the remote desktop profile configuration with `tmsh list /ltm remote-desktop-profile <profile_name>` and confirm the profile is actively referenced by a virtual server
    Affected if The remote desktop profile is assigned to a virtual server and the virtual server is in service

A system is affected if it runs one of the listed affected versions AND has a remote desktop profile assigned to a virtual server that processes Citrix Remote Desktop connections.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the appropriate F5 BIG-IP hotfix: 11.4.1 HF9, 11.5.3, or 11.6.0 HF4 or later. Until patching is feasible, consider restricting access to virtual servers with remote desktop profiles or disabling the remote desktop profile functionality if not required.

Recommended fix High confidence

11.4.1 HF9 / 11.5.3 / 11.6.0 HF4 or later (prefer latest stable 11.x or migrate to 12.x/13.x/14.x if available)

  1. 1. Identify the current F5 BIG-IP APM version by running 'tmsh show sys version' or checking the web UI.
  2. 2. Review the F5 BIG-IP release notes and upgrade guide at support.f5.com for upgrade procedures.
  3. 3. Plan maintenance window as upgrades require system downtime.
  4. 4. Perform a full backup of the BIG-IP configuration using 'tmsh save sys config' or the web UI.
  5. 5. If running 11.2.0, 11.2.1, 11.3.0, or 11.4.0, upgrade directly to a fixed release (11.4.1 HF9, 11.5.3, or 11.6.0 HF4 or later).
  6. 6. If running 11.4.1, upgrade to 11.4.1 HF9 or later.
  7. 7. If running 11.5.x, upgrade to 11.5.3 or later.
  8. 8. If running 11.6.0, upgrade to 11.6.0 HF4 or later.
Caveat Review F5 release notes for breaking changes between versions; some configurations or legacy features may require adjustment after upgrade

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Big Ip Access Policy Manager Scoped from the published advisory
  • Consultation4.0 h
  • Implementation12.0 h
  • Testing6.0 h
  • Review / QA3.0 h
25.0 hours of engineering $4,400
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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-2015-8098 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