CVE-2005-0039

Severity: medium (CVSS 6.4 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 4.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2005-05-10 · updated 2026-06-16

Description

Certain configurations of IPsec, when using Encapsulating Security Payload (ESP) in tunnel mode, integrity protection at a higher layer, or Authentication Header (AH), allow remote attackers to decrypt IPSec communications by modifying the outer packet in ways that cause plaintext data from the inner packet to be returned in ICMP messages, as demonstrated using bit-flipping attacks and (1) Destination Address Rewriting, (2) a modified header length that causes portions of the packet to be interpreted as IP Options, or (3) a modified protocol field and source address.

Affected products

Nissc Ipsec: 1.0

References

http://marc.info/?l=bugtraq&m=111566201610350&w=2
http://secunia.com/advisories/17938
http://securitytracker.com/id?1015320
http://www.kb.cert.org/vuls/id/302220
http://www.niscc.gov.uk/niscc/docs/al-20050509-00386.html?lang=en
http://www.securityfocus.com/archive/1/407774
http://www.securityfocus.com/bid/13562
http://www.vupen.com/english/advisories/2005/0507
http://www.vupen.com/english/advisories/2005/2806
http://marc.info/?l=bugtraq&m=111566201610350&w=2
http://secunia.com/advisories/17938
http://securitytracker.com/id?1015320

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