SARA / Free Tools / CVE / CVE-2023-42559

CVE-2023-42559 — Improper exception management vulnerability in Knox Guard prior to SMR Dec-2023

Improper exception management vulnerability in Knox Guard prior to SMR Dec-2023 Release 1 allows Knox Guard lock bypass via changing system time.

CVSS

4.9 MEDIUM

EPSS

4.00% (top 86.60%)

CWE

—

Published

2023-12-05T02:44:17.066Z

Last modified

2024-08-02T19:23:39.612Z

CVSS vector

CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

01What is this vulnerability?

Improper exception management vulnerability in Knox Guard prior to SMR Dec-2023 Release 1 allows Knox Guard lock bypass via changing system time.

Vendor	Product	Versions
Samsung Mobile	Samsung Mobile Devices	SMR Dec-2023 Release in Android 11, 12, 13, 14

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

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.

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

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

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

security.samsungmobile.com — https://security.samsungmobile.com/securityUpdate.smsb?year=2023&month=12

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