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EmurlApplication · Seattle Lab Software

CVE-2000-0397

MEDIUM · 5.0 CVSS v2.0 Published 2000-05-15
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
59/100
Remediation priority · Elevated
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
The EMURL web-based email account software encodes predictable identifiers in user session URLs, which allows a remote attacker to access a user's email account.

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

EMURL web-based email software uses predictable identifiers in user session URLs, allowing remote attackers to hijack sessions and access user email accounts by guessing or inferring valid session identifiers.

MitigationReplace predictable session identifiers with cryptographically random, unique session tokens and implement proper session validation on the server side.

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
EmurlApplication
Affected:= 2.0

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
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None

AV:N/AC:L/Au:N/C:P/I:N/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. Locate EMURL software installation
    Search for emurl.exe or related files on the system, or check installed programs list for Seattle Lab Emurl
    Affected if EMURL version 2.0 is installed and running as a web service
  2. Verify the installed version
    Check the software version through its interface, executable properties, or documentation
    Affected if The running version is EMURL 2.0 specifically
  3. Examine session URL patterns
    Log into the web interface and observe the URLs generated for authenticated sessions
    Affected if Session identifiers in URLs are sequential, numeric, or based on predictable patterns rather than cryptographically random tokens
  4. Test session predictability
    Create multiple sessions and compare the session ID values to determine if they follow a guessable sequence
    Affected if Session IDs can be predicted or guessed based on observing a few samples
  5. Check network accessibility
    Determine if the EMURL web server is accessible from untrusted networks
    Affected if The vulnerable software is exposed to the internet or untrusted internal users

A user is affected if EMURL version 2.0 is running and accessible, and session URLs contain predictable rather than random identifiers.

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

Replace predictable session identifiers with cryptographically random, unique session tokens and implement proper session validation on the server side.

Fix this in Emurl Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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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-2000-0397 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