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CVE-2015-3240

openswan: denial of service via IKE daemon restart when receiving a bad DH gx value

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Severity

Moderate

Red Hat Product Security

5

CVSS 2.0

Review impact separately from score.

Published · August 25, 2015

Updated · November 21, 2025

Description

A flaw was discovered in the way Libreswan's IKE daemon processed IKE KE payloads. A remote attacker could send specially crafted IKE payload with a KE payload of g^x=0 that, when processed, would lead to a denial of service (daemon crash).

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 2.0 · 5
AV:N/AC:L/Au:N/C:N/I:N/A:P

CWE-617 · Reachable Assertion