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CVE Record

CVE-2017-0911: Twitter Kit for iOS versions 3.0 to 3.2.1 is vulnerable to a callback verification flaw in the "Login with...

Twitter Kit for iOS versions 3.0 to 3.2.1 is vulnerable to a callback verification flaw in the "Login with Twitter" component allowing an attacker to provide alternate credentials. In the final step of "Login with Twitter" authentication information is passed back to the application using the registered custom URL scheme (typically twitterkit-<consumer-key>) on iOS. Because the callback handler did not verify the authenticity of the response, this step is vulnerable to forgery, potentially allowing attacker to associate a Twitter account with a third-party service.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

This vulnerability affected iOS apps using Twitter Kit 3.0 through 3.2.1 for Login with Twitter. The app could accept a forged login callback, letting an attacker link their Twitter account to someone’s account on a third-party service. Business impact depends on how much trust the service placed in Twitter login identity.

Executive priority

Treat as a targeted identity-linking risk for affected iOS apps, not a broad infrastructure emergency. Prioritize if Twitter login created user accounts, authorized sensitive actions, or linked to customer identity records.

Technical view

Twitter Kit for iOS returned final Login with Twitter authentication data through a registered custom URL scheme. Versions 3.0 to 3.2.1 did not authenticate that callback response, creating a callback forgery issue classified as CWE-360. The stated impact is unauthorized association of a Twitter account with a third-party service.

Likely exposure

Exposure is limited to iOS applications that integrated Twitter Kit for iOS versions 3.0 to 3.2.1 and used the Login with Twitter component. Apps not using that SDK path are not identified as affected in the provided sources.

Exploitation context

The provided sources describe the vulnerability and impact but do not show CISA KEV listing or confirmed active exploitation. The issue involves forged callback data during the final authentication handoff, not a general Twitter account takeover claim.

Researcher notes

Evidence identifies affected versions and root cause, but no CVSS vector is provided in the bundle. Keep analysis scoped to callback authenticity failure in Twitter Kit for iOS and avoid assuming broader OAuth compromise or active exploitation.

Mitigation direction

  • Upgrade affected iOS apps off Twitter Kit versions 3.0 through 3.2.1.
  • Review Twitter’s vendor guidance and the 3.2.2 changelog before release.
  • Revoke or revalidate suspicious Twitter-linked account associations if business impact warrants it.
  • Audit mobile authentication flows that trust custom URL scheme callbacks.

Validation and detection

  • Inventory iOS apps for Twitter Kit for iOS dependency versions.
  • Confirm whether Login with Twitter is enabled in affected app builds.
  • Review account-linking logs for unusual Twitter identity changes during the exposure window.
  • Test that updated builds reject unauthenticated or mismatched login callbacks.
Prepared
Confidence
high
Sources
7

Public sources used

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

Conservative CVE-to-ATT&CK context

These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.

ATT&CK lookup starting points

Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.

cwe · low confidence lookup

CWE-360: Exact CWE lookup

Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.

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cve · low confidence lookup

CVE-2017-0911 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors
0Timeline events
0ADP providers
6Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
TwitterTwitter Kit for iOSVersions 3.0 to 3.2.1Listed
Weakness

CWE details

CWE-360

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.

CWE-360 · source CWE mapping

Trust of System Event Data

Trust of System Event Data represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

Open CWE intelligenceSame-CWE CVEs