Tiktok: Direct Request
CVE-2022-28799 is a high-severity direct request vulnerability in Tiktok, with a CVSS 3.1 base score of 8.8 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, but only if a user takes part, for example by opening a link or file. The record lists version 23.7.3 as the first without the flaw, so updating Tiktok to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 14.6% chance of exploitation within 30 days, which is in the top 3.3% of all scored CVEs.
EPSS places it among the vulnerabilities most likely to be exploited soon.
What to do
- Update Tiktok to 23.7.3 or a later version.
- Read the advisory on github.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
- Because the attack needs a user to take part, warn users about unexpected links and files related to this product until it is patched.
Affected products and versions
Version data comes from NVD's product matching. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- RequiredA user must take an action such as opening a file or link.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 8.8 | High | NVD |
| CVSS 2.0 | 6.8 | Medium | NVD |
Official description
The TikTok application before 23.7.3 for Android allows account takeover. A crafted URL (unvalidated deeplink) can force the com.zhiliaoapp.musically WebView to load an arbitrary website. This may allow an attacker to leverage an attached JavaScript interface for the takeover with one click.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Direct Request
The web application does not adequately enforce appropriate authorization on all restricted URLs, scripts, or files.
How developers prevent this class of flaw
- Apply appropriate access control authorizations for each access to all restricted URLs, scripts or files.
- Consider using MVC based frameworks such as Struts.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Advisories
- github.com/Ch0pin/security-advisories/security/advisories/GHSA-v39p-88q5-5cvrThird Party Advisory
Third-party and government advisories
- hackerone.com/reports/1500614Issue Tracking, Third Party Advisory
- support.tiktok.com/en/safety-hc/reporting-security-vulnerabilities/reporting-the-security-vulnerabilitiesThird Party Advisory
Recent Direct Request vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 5.3 Medium severity
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