CVE-2019-8919
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 · uneditedThe seadroid (aka Seafile Android Client) application through 2.2.13 for Android always uses the same Initialization Vector (IV) with Cipher Block Chaining (CBC) Mode to encrypt private data, making it easier to conduct chosen-plaintext attacks or dictionary attacks.
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 confidenceThe Seafile Android Client through version 2.2.13 uses a static Initialization Vector (IV) when encrypting private data with CBC mode, violating cryptographic best practices that require unique IVs per encryption operation. This deterministic IV enables attackers to perform statistical, chosen-plaintext, or dictionary attacks to recover plaintext data.
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<= 2.2.13CVSS 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
- None
- Availability
- None
CVSS:3.0/AV:N/AC:L/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 Seafile Android Client installationLocate the Seadroid app package on the Android device. The typical package name is com.seafile.seadroid2.Affected if The Seafile Android Client (Seadroid) is installed on the device.
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Verify the installed versionCheck the app version in the Android system settings under App Info or use a package manager command to retrieve the versionName. Compare against the affected range: versions 2.2.13 and earlier.Affected if The installed version is 2.2.13 or any earlier version.
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Confirm encryption feature is enabledInspect the Seadroid app settings to determine if local encryption for private data is activated. This may be found under Settings, Account, or Security options where users configure encrypted vaults or private libraries.Affected if Local encryption of private data is enabled in the Seafile Android Client.
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Inspect encryption implementation for static IVAnalyze the app's encryption code or binary to verify whether the CBC mode encryption uses a hardcoded or static Initialization Vector rather than a randomly generated unique IV per encryption operation.Affected if The encryption implementation uses a static IV for all CBC mode encryption operations.
A user is affected if they have Seafile Android Client version 2.2.13 or earlier with local encryption enabled and the app uses a static IV in its CBC encryption routine.
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 dataUpdate the encryption implementation to generate cryptographically random unique IVs for each encryption operation, store them alongside the ciphertext (IV is not confidential), and update the decryption routine accordingly. Existing encrypted data may require migration or re-encryption.
- Consultation4.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA3.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,040.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-8919 — 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-2019-8919 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
- No spam, self-promotion, credentials, or personal data