5

CVE-2015-3204: libreswan Improper Input Validation

CVSS: 5.0v2.0MediumModified
AliasesRHSA-2015:1154
Published 01-07-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-3204 is a medium (CVSS 5.0) Improper Input Validation vulnerability in libreswan. EPSS estimates a 2.60% chance of exploitation in the next 30 days, higher than 85.1% of scored vulnerabilities.

Overall risk
21/100
0100
Low · default modelHow is this calculated?
CVSS score
5.0/10
010
Medium · v2.0 (NVD)
EPSS score
2.60%
0%100%
Low · -0.02 pp in 30 days
KEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded

Timeline

  1. 01-07-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

libreswan 3.9 through 3.12 allows remote attackers to cause a denial of service (daemon restart) via an IKEv1 packet with (1) unassigned bits set in the IPSEC DOI value or (2) the next payload value set to ISAKMP_NEXT_SAK.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.60%

Chance of exploitation in the next 30 days

Percentile

85%

Versus all other CVEs

30-day change

-0.02 pp

From 2.62% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.60%

Known exploited

Compare KEV catalogs

Not in any of the 3 tracked catalogs.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Redhat2 products
  • libreswan< 0:3.12-10.1.el7_1 | < 0:3.12-10.1.ael7b_1
  • libreswan-debuginfo< 0:3.12-10.1.el7_1 | < 0:3.12-10.1.ael7b_1
Libreswan1 product

2 vendors · 3 products

References

12 links
Show all 12 references