CVEvulnerability

CVE-2005-0039

6.4 MEDIUM Published 2005-05-10 Modified 2026-06-16 Official page ↗
Status
Modified
Published
2005-05-10
Last modified
2026-06-16
Assigner
[email protected]
CVSS 2.0 ([email protected])
6.4 MEDIUM — AV:N/AC:L/Au:N/C:P/I:P/A:N

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 configurations

• nissc ipsec 1.0

Related

Referenced by CWE · observed example (1)

  • CWE-649 Reliance on Obfuscation or Encryption of Security-Relevant Inputs without Integrity Checking weakness

References