CVE-2017-2787
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 · uneditedA buffer overflows exists in the psnotifyd application of the Pharos PopUp printer client version 9.0. A specially crafted packet can be sent to the victim's computer and can lead to a heap based buffer overflow resulting in potential remote code execution. This client is always listening, has root privileges, and requires no user interaction to exploit.
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 confidenceA heap-based buffer overflow vulnerability exists in the psnotifyd daemon of Pharos PopUp printer client version 9.0. An attacker can send a specially crafted packet to the always-listening service (running with root privileges) to trigger the overflow and achieve remote code execution without any user interaction.
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= 9.0CVSS 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
- High
- Privileges
- None
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/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 checksWork through these to decide whether this CVE applies to you.
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Identify installed Pharos PopUp versionUse system package manager or check program files for Pharos PopUp installation. Look for version information in installed programs or the application's About/Version details.Affected if Version is exactly 9.0 (CVE-2017-2787 affects only version 9.0)
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Locate the psnotifyd daemonSearch for the psnotifyd or psnotify executable in common daemon/service directories (/usr/sbin, /usr/lib, /opt, or the Pharos installation directory). On Windows systems, check services list for psnotifyd service.Affected if The psnotifyd daemon is present on the system
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Verify if psnotifyd service is runningCheck running processes for psnotifyd or query the system service manager. On Linux: ps aux | grep psnotifyd. On Windows: check Services console or sc query psnotifyd.Affected if psnotifyd service is actively running (vulnerability requires the service to be running to be exploitable)
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Check network exposure of psnotifyd serviceIdentify the port psnotifyd listens on (typically check netstat output for processes associated with psnotifyd). Determine if the service is bound to network interfaces accessible from other systems.Affected if psnotifyd is bound to a network port accessible from untrusted networks (the vulnerability is exploitable remotely via network packets)
System is affected if Pharos PopUp version 9.0 is installed AND the psnotifyd daemon is running and accessible over the network.
Generated from the published advisory. Verify against your own configuration.
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 dataIf a vendor patch is unavailable, disable the psnotifyd service or remove the Pharos PopUp client if unnecessary; otherwise, network segment the affected system and block inbound access to the service port.
- Consultation3.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-2787 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-2787 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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