HOMEVULNERABILITIESCVE-2023-24609
HIGH

CVE-2023-24609

CWE-190Published: December 22, 2023· Updated: Jun 17, 2026

7.5
CVSS v3.1

Official Description

Matrix SSL 4.x through 4.6.0 and Rambus TLS Toolkit have a length-subtraction integer overflow for Client Hello Pre-Shared Key extension parsing in the TLS 1.3 server. An attacked device calculates an SHA-2 hash over at least 65 KB (in RAM). With a large number of crafted TLS messages, the CPU becomes heavily loaded. This occurs in tls13VerifyBinder and tls13TranscriptHashUpdate.

NVD Source

Technical Analysis

CVE-2023-24609 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in availability disruption (denial of service), with a CVSS base score of 7.5.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityNone
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Vendors & Products

matrixssl1 product(s)
matrixssl
rambus1 product(s)
tls toolkit
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842
ADVISORYhttps://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842

All References (4)

→
https://www.rambus.com/security/software-protocols/tls-toolkit/Product
→
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842Exploit · Third Party Advisory
→
https://www.rambus.com/security/software-protocols/tls-toolkit/Product
→
https://www.telekom.com/en/company/data-privacy-and-security/news/advisories-504842Exploit · Third Party Advisory

Quick Facts

CVE IDCVE-2023-24609
CVSS Score7.5 / 10
SeverityHIGH
WeaknessCWE-190
CISA KEVNo
Affected2 vendor(s)
PublishedDec 22, 2023

Related CVEs (CWE-190)

CVE-2012-5835
10.0
CVE-2010-1233
10.0
CVE-2008-2663
10.0
CVE-2015-5108
10.0
CVE-2010-3254
10.0
CVE-2013-2555
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-24609 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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