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Libreswan CVE-2013-4564

MEDIUM
Numeric Errors (CWE-189)
2014-01-07 secalert@redhat.com
5.0
CVSS 2.0 · NVD
View

Vulnerability Assessment

Weakness
CWE
ASVS 5.0
V15 - Secure Coding and Architecture Numeric handling
Impact

CVSS score of 5.0 (MEDIUM). Attack characteristics: network attack vector, low complexity. EPSS exploitation probability: 1.38%.

Exploit ScenarioDerived

This vulnerability can be exploited remotely over the network. Successful exploitation could compromise the medium-severity affected system.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).
Patch available 1.4% exploitation probability (EPSS)

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AnalysisAI

Libreswan 3.6 allows remote attackers to cause a denial of service (crash) via a small length value and (1) no version or (2) an invalid major number in an IKE packet. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified under CWE-189. Libreswan 3.6 allows remote attackers to cause a denial of service (crash) via a small length value and (1) no version or (2) an invalid major number in an IKE packet. Affected products include: Libreswan.

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  • Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 5.0 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector
Network
Attack Complexity
Low
Confidentiality
None
Integrity
None
Availability
P

DescriptionCVE.org

Libreswan 3.6 allows remote attackers to cause a denial of service (crash) via a small length value and (1) no version or (2) an invalid major number in an IKE packet.

Threat Intelligence Overview

EPSS Score
1.4%
Top 20% exploitable
Data Quality
3 sources
Confidence: Low

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue
Severity MEDIUM
CISA KEV No
Public POC No
EPSS 1.4%
Patch available Yes
Active threat No
Deciding rule
MEDIUM severity (CVSS 4.0-6.9)
What every action level means
Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.
Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.
This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.
This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.
Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived
Scheduled
Exploitation· derived
None
System Exposure· derived
Open
Automatable· derived
No
Human Impact· derived
Medium

Priority Score

26
Low Medium High Critical
KEV: 0
EPSS: +1
CVSS: +25
PoC: 0
Weaponized: 0
Threat intel: 0
Gov advisory: 0

Attack Technique

Denial of Service attacks render applications or systems unavailable by overwhelming resources or triggering failure conditions.

Affected Products (CPE)CVE.org

cpe:2.3:a:libreswan:libreswan:3.6:*:*:*:*:*:*:*
CVE-2013-7283 CRITICAL POC
9.3 Jan 09

Race condition in the libreswan.spec files for Red Hat Enterprise Linux (RHEL) and Fedora packages in libreswan 3.6 has

CVE-2019-12312 HIGH POC
7.5 May 24

In Libreswan 3.27 an assertion failure can lead to a pluto IKE daemon restart. Rated high severity (CVSS 7.5), this vuln

CVE-2023-23009 MEDIUM POC
6.5 Feb 21

Libreswan 4.9 allows remote attackers to cause a denial of service (assert failure and daemon restart) via crafted TS pa

CVE-2013-7294 MEDIUM POC
5.0 Jan 16

The ikev2parent_inI1outR1 function in pluto/ikev2_parent.c in libreswan before 3.7 allows remote attackers to cause a de

CVE-2016-3071 HIGH
7.5 Apr 18

Libreswan 3.16 might allow remote attackers to cause a denial of service (daemon restart) via an IKEv2 aes_xcbc transfor

CVE-2016-5361 HIGH
7.5 Jun 16

programs/pluto/ikev1.c in libreswan before 3.17 retransmits in initial-responder states, which allows remote attackers t

CVE-2016-5391 HIGH
7.5 Jun 13

libreswan before 3.18 allows remote attackers to cause a denial of service (NULL pointer dereference and pluto daemon re

CVE-2026-12413 HIGH
7.5 Jul 02

Denial of service in the Libreswan IPsec VPN's pluto daemon allows remote unauthenticated attackers to crash and repeate

CVE-2026-14957 HIGH
7.5 Sep 02

Unauthenticated remote denial of service in Libreswan's pluto IKE daemon allows any network attacker to repeatedly crash

CVE-2023-30570 HIGH
7.5 May 29

pluto in Libreswan before 4.11 allows a denial of service (responder SPI mishandling and daemon crash) via unauthenticat

CVE-2023-2295 HIGH
7.5 May 17

A vulnerability was found in the libreswan library. Rated high severity (CVSS 7.5), this vulnerability is remotely explo

CVE-2020-1763 HIGH
7.5 May 12

An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unau

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