CVE-2021-38000

Google Chromium Intents: Improper Input Validation

As of , CVE-2021-38000 in Google Chromium Intents is on CISA's list of exploited vulnerabilities: CISA listed it on . Our patch-first group: Patch soon.

Exploited
Yes: CISA listed it on 3 November 2021
US federal deadline
17 November 202114 days after CISA listed it. US federal civilian agencies must fix it by then.
Used in ransomware campaigns
Not known to CISA
EPSS score
0.05Higher than 91% of the CVEs EPSS scores. EPSS estimates the chance of exploitation activity in the next 30 days.
EPSS when listed
Not availableCISA listed it before 4 February 2022, where the EPSS files we read begin.
Public exploit
None foundNeither Metasploit nor Exploit-DB lists one.
Fix
No vendor link in CISA's entry

What CISA says to do

Apply updates per vendor instructions.

CISA's required action

What the flaw is

Google Chromium Intents contains an improper input validation vulnerability that allows a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

CISA's description

Insufficient validation of untrusted input in Intents in Google Chrome on Android prior to 95.0.4638.69 allowed a remote attacker to arbitrarily browser to a malicious URL via a crafted HTML page.

The CVE record's description, from Chrome

CVE published
23 November 2021
Assigned by
Chrome
CVSS
6.1 Medium (CVSS 3.1, from CISA-ADP)
CWE-20
Improper Input Validation
CWE-601
URL Redirection to Untrusted Site ('Open Redirect')
CISA SSVC, exploitation
active
CISA SSVC, automatable
no
CISA SSVC, technical impact
partial

Timeline

  1. CISA added it to its list of exploited vulnerabilities.
  2. The US federal deadline to fix it.
  3. The CVE record was published.

Chromium Intents: other exploited entries

VulnerabilityProductOur groupListedDeadlineEPSS
CVE-2022-2856Insufficient Input ValidationGoogle Chromium IntentsPatch soon0.05

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