CVE-2019-2208 — In PromiseBuiltinsAssembler::NewPromiseCapability of builtins-promise

In PromiseBuiltinsAssembler::NewPromiseCapability of builtins-promise.cc, there is a possible out of bounds read in v8 JIT code due to a bug in code generation. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is no

01What is this vulnerability?

In PromiseBuiltinsAssembler::NewPromiseCapability of builtins-promise.cc, there is a possible out of bounds read in v8 JIT code due to a bug in code generation. This could lead to remote information disclosure with no additional execution privileges needed. User interaction is not needed for exploitation. Product: Android Versions: Android-8.1, Android-9 Android ID: A-138441919

02Affected products

Vendor	Product	Versions
n	a / Android	Android-8.1, Android-9

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2019-11-13T17:42:39.000Z
• Last modified: 2024-08-04T18:42:50.881Z

09References

• source.android.com — https://source.android.com/security/bulletin/2020-01-01