4.3

CVE-2015-3240: libreswan Numeric Errors

CVSS: 4.3v2.0MediumModified
AliasesRHSA-2015:1979
Published 09-11-2015Last modified 06-08-2024
Open JSON

Vulnerability summary

CVE-2015-3240 is a medium (CVSS 4.3) Numeric Errors vulnerability in libreswan. EPSS estimates a 2.79% chance of exploitation in the next 30 days, higher than 86.2% of scored vulnerabilities.

Overall risk
18/100
0100
Low · default modelHow is this calculated?
CVSS score
4.3/10
010
Medium · v2.0 (NVD)
EPSS score
2.79%
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. 09-11-2015
    PublishedVulnerability first disclosed.
  2. 06-08-2024
    Last modifiedVulnerability information updated.

Description

The pluto IKE daemon in libreswan before 3.15 and Openswan before 2.6.45, when built with NSS, allows remote attackers to cause a denial of service (assertion failure and daemon restart) via a zero DH g^x value in a KE payload in a IKE packet.

CVSS metrics

1 score · 1 source · 1 version

EPSS trend

Probability

2.79%

Chance of exploitation in the next 30 days

Percentile

86%

Versus all other CVEs

30-day change

+0.02 pp

From 2.77% on 20-09-2026

20-09-202620-10-2026
EPSS score
2.79%

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< 0:3.15-5.el7_1 | < 0:3.15-5.ael7b_1
  • libreswan-debuginfo< 0:3.15-5.el7_1 | < 0:3.15-5.ael7b_1
Libreswan1 product

2 vendors · 3 products

References

17 links
Show all 17 references