CVE-2008-4551

Severity: medium (CVSS 5.0 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.5% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-10-14 · updated 2026-06-16
Weakness: CWE-399

Description

strongSwan 4.2.6 and earlier allows remote attackers to cause a denial of service (daemon crash) via an IKE_SA_INIT message with a large number of NULL values in a Key Exchange payload, which triggers a NULL pointer dereference for the return value of the mpz_export function in the GNU Multiprecision Library (GMP).

Affected products

strongSwan: through 4.2.6; 2.0.0, 2.0.1, 2.0.2, 2.1.0, 2.1.1, 2.1.2 (+54)

References

http://download.strongswan.org/CHANGES4.txt
http://labs.mudynamics.com/advisories/MU-200809-01.txt
http://secunia.com/advisories/31963
http://www.securityfocus.com/bid/31291
http://www.securitytracker.com/id?1020903
http://www.vupen.com/english/advisories/2008/2660
http://download.strongswan.org/CHANGES4.txt
http://labs.mudynamics.com/advisories/MU-200809-01.txt
http://secunia.com/advisories/31963
http://www.securityfocus.com/bid/31291
http://www.securitytracker.com/id?1020903
http://www.vupen.com/english/advisories/2008/2660

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