HOMEVULNERABILITIESCVE-2023-36328
CRITICAL

CVE-2023-36328

CWE-190Published: September 1, 2023· Updated: Jun 17, 2026

9.8
CVSS v3.1

Official Description

Integer Overflow vulnerability in mp_grow in libtom libtommath before commit beba892bc0d4e4ded4d667ab1d2a94f4d75109a9, allows attackers to execute arbitrary code and cause a denial of service (DoS).

NVD Source

Technical Analysis

CVE-2023-36328 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), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.8.

CVSS v3.1 Vector Breakdown

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

Affected Vendors & Products

Fedora1 product(s)
fedora
libtom1 product(s)
libtommath
Source: NVD CPE · 4 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

PATCHhttps://github.com/libtom/libtommath/pull/546
PATCHhttps://github.com/libtom/libtommath/pull/546
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3H2PFUTBKQUDSOJXQQS7LUSZQWT3JTW2/
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46GORAXZ34MHQNUGJBKS7PJ5NSMIAJGC/
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ZUPWZGPFJ4JOI2NIP7YLRKZD5YXQTBK/
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3H2PFUTBKQUDSOJXQQS7LUSZQWT3JTW2/
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46GORAXZ34MHQNUGJBKS7PJ5NSMIAJGC/
ADVISORYhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ZUPWZGPFJ4JOI2NIP7YLRKZD5YXQTBK/

All References (9)

→
https://github.com/libtom/libtommath/pull/546Issue Tracking · Patch
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3H2PFUTBKQUDSOJXQQS7LUSZQWT3JTW2/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46GORAXZ34MHQNUGJBKS7PJ5NSMIAJGC/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ZUPWZGPFJ4JOI2NIP7YLRKZD5YXQTBK/Mailing List · Third Party Advisory
→
https://github.com/libtom/libtommath/pull/546Issue Tracking · Patch
→
https://lists.debian.org/debian-lts-announce/2024/09/msg00011.html
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3H2PFUTBKQUDSOJXQQS7LUSZQWT3JTW2/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/46GORAXZ34MHQNUGJBKS7PJ5NSMIAJGC/Mailing List · Third Party Advisory
→
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6ZUPWZGPFJ4JOI2NIP7YLRKZD5YXQTBK/Mailing List · Third Party Advisory

Quick Facts

CVE IDCVE-2023-36328
CVSS Score9.8 / 10
SeverityCRITICAL
WeaknessCWE-190
CISA KEVNo
Affected2 vendor(s)
PublishedSep 1, 2023

Related CVEs (CWE-190)

CVE-2015-5108
10.0
CVE-2026-24814
10.0
CVE-2015-5097
10.0
CVE-2010-3254
10.0
CVE-2010-1233
10.0
CVE-2012-5143
10.0

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2023-36328 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. CVE data is provided under the NVD usage policy.
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