CVE-2017-17174
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 · uneditedSome Huawei products RSE6500 V500R002C00; SoftCo V200R003C20SPCb00; VP9660 V600R006C10; eSpace U1981 V100R001C20; V200R003C20; V200R003C30; V200R003C50 have a weak algorithm vulnerability. To exploit the vulnerability, a remote, unauthenticated attacker has to capture TLS traffic between clients and the affected products. The attacker may launch the Bleichenbacher attack on RSA key exchange to decrypt the session key and the previously captured sessions by some cryptanalytic operations. Successful exploit may cause information leak.
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 confidenceThis vulnerability is a variant of the Bleichenbacher attack (ROBOT) affecting TLS implementations in affected Huawei products. The attack exploits the PKCS#1 v1.5 padding oracle in RSA key exchange, allowing an attacker who can capture TLS traffic to decrypt session keys and previously captured encrypted sessions by sending modified RSA-encrypted premaster secrets and analyzing padding error responses.
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= v500r002c00= v200r003c20spcb00= v600r006c10= v200r001c20= v200r003c20= v200r003c30= v200r003c50CVSS 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
- Unchanged
- Confidentiality
- High
- Integrity
- None
- Availability
- None
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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 checksWork through these to decide whether this CVE applies to you.
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Identify the Huawei product modelAccess the device management interface or run 'display device'/'show system info' command to identify the exact model (Rse6500, Softco, Vp9660, or Espace U1981)Affected if The model is one of Rse6500, Softco, Vp9660, or Espace U1981
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Check the installed firmware versionRun 'display version' or access the firmware version information through the device admin interfaceAffected if The firmware version matches one of: Rse6500 v500r002c00, Softco v200r003c20spcb00, Vp9660 v600r006c10, or Espace U1981 versions v200r001c20, v200r003c20, v200r003c30, v200r003c50
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Identify TLS configuration and cipher suitesAccess the TLS/SSL configuration settings in the device management interface or run 'display ssl policy' to view configured cipher suitesAffected if RSA key exchange cipher suites (such as TLS_RSA_WITH_*) are enabled in the TLS configuration
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Verify if RSA key exchange is in useCheck the TLS handshake configuration or examine captured TLS traffic for use of RSA key exchange during the initial handshakeAffected if The device accepts RSA key exchange cipher suites for TLS connections
A user is affected if they are running one of the listed Huawei product firmware versions with RSA key exchange cipher suites enabled in TLS configuration.
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 dataUpgrade affected Huawei products to vendor-supplied patched versions, or disable RSA key exchange in TLS configurations and enforce forward-secret cipher suites (e.g., ECDHE) to prevent decryption of captured traffic.
- Consultation4.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-17174 — 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-2017-17174 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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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.
- 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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