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CVE-2023-52353

Arm Mbed Tls vulnerability

7.5 HIGHPublic exploitEPSS 0.46%
  1. Published21 Jan 2024

Description

An issue was discovered in Mbed TLS through 3.5.1. In mbedtls_ssl_session_reset, the maximum negotiable TLS version is mishandled. For example, if the last connection negotiated TLS 1.2, then 1.2 becomes the new maximum.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityNone
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Affected products

Arm Mbed Tls< 3.5.2

Remediation

Fixed in
Arm Mbed Tls≥ 3.5.2

References

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Frequently asked

Is CVE-2023-52353 being actively exploited?

CVE-2023-52353 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.46%.

How severe is CVE-2023-52353?

CVE-2023-52353 has a CVSS 3.1 base score of 7.5, rated high. EPSS estimates a 0.46% probability of exploitation.

Which products are affected by CVE-2023-52353?

Affected products include Arm Mbed Tls.

How do I fix CVE-2023-52353?

Upgrade affected software to a fixed version, for example Arm Mbed Tls 3.5.2 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-52353 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.