HOMEVULNERABILITIESCVE-2019-13629
MEDIUM

CVE-2019-13629

CWE-203Published: October 3, 2019· Updated: Jun 17, 2026

5.9
CVSS v3.1

Official Description

MatrixSSL 4.2.1 and earlier contains a timing side channel in ECDSA signature generation. This allows a local or a remote attacker, able to measure the duration of hundreds to thousands of signing operations, to compute the private key used. The issue occurs because crypto/pubkey/ecc_math.c scalar multiplication leaks the bit length of the scalar.

NVD Source

Technical Analysis

CVE-2019-13629 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 complete confidentiality breach (data exposure), with a CVSS base score of 5.9.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityHigh
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected Vendors & Products

matrixssl1 product(s)
matrixssl
Source: NVD CPE · 1 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

ADVISORYhttp://www.openwall.com/lists/oss-security/2019/10/02/2
ADVISORYhttp://www.openwall.com/lists/oss-security/2019/10/02/2

All References (8)

→
http://www.openwall.com/lists/oss-security/2019/10/02/2Mailing List · Third Party Advisory
→
https://eprint.iacr.org/2011/232.pdfNot Applicable
→
https://minerva.crocs.fi.muni.cz/Product
→
https://tches.iacr.org/index.php/TCHES/article/view/7337Not Applicable
→
http://www.openwall.com/lists/oss-security/2019/10/02/2Mailing List · Third Party Advisory
→
https://eprint.iacr.org/2011/232.pdfNot Applicable
→
https://minerva.crocs.fi.muni.cz/Product
→
https://tches.iacr.org/index.php/TCHES/article/view/7337Not Applicable

Quick Facts

CVE IDCVE-2019-13629
CVSS Score5.9 / 10
SeverityMEDIUM
WeaknessCWE-203
CISA KEVNo
Affected1 vendor(s)
PublishedOct 3, 2019

Related CVEs (CWE-203)

CVE-2024-25191
9.8
CVE-2024-25190
9.8
CVE-2022-23304
9.8
CVE-2022-23303
9.8
CVE-2024-25189
9.8
CVE-2024-25714
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2019-13629 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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