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Fencer Intel
high 7.8

CVE-2015-4047 json

racoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) v…

published 2015-05-29 11 y ago modified 2026-06-17 4 mo ago also EUVD-2015-4075

cvss
7.8
version 2.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
9.7%
EPSS 9.7% chance of exploitation in 30 days, percentile 95%
public exploits
0
none known

Summary

racoon/gssapi.c in IPsec-Tools 0.8.2 allows remote attackers to cause a denial of service (NULL pointer dereference and IKE daemon crash) via a series of crafted UDP requests.

Patch / fix

  • ipsec-tools Ubuntu 14.04 LTS 1:0.8.0-14+deb7u1ubuntu0.1

ubuntu advisories UBUNTU-CVE-2015-4047

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

  • ipsec-tools SLES for SAP 11 SP4, SLES for SAP 11 SP3, SLES 11 SP4 +2 more 0.7.3-1.13.1

suse advisories SUSE-SU-2015:1367-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2015-4047 updated cvss 4.3

ipsec-tools: NULL pointer dereference in racoon/gssapi.c

  • Red Hat Enterprise Linux 5 ipsec-tools
    affected: no fix planned “Will not fix”

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

Exploit prediction

9.73% chance of exploitation in the next 30 days, higher than 95% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • seclists.org http://seclists.org/fulldisclosure/2015/May/83 referenced PoC, tagged "exploit" by a source, unverified
  • seclists.org http://seclists.org/fulldisclosure/2015/May/81 referenced PoC, tagged "exploit" by a source, unverified
  • altsci.com https://www.altsci.com/ipsec/ipsec-tools-sa.html referenced PoC, tagged "exploit" by a source, unverified
  • openwall.com http://www.openwall.com/lists/oss-security/2015/05/20/1 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
NVD 2.0 7.8 AV:N/AC:L/Au:N/C:N/I:N/A:C

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.