First published: Tue Apr 10 2007(Updated: )
The isakmp_info_recv function in src/racoon/isakmp_inf.c in racoon in Ipsec-tools before 0.6.7 allows remote attackers to cause a denial of service (tunnel crash) via crafted (1) DELETE (ISAKMP_NPTYPE_D) and (2) NOTIFY (ISAKMP_NPTYPE_N) messages.
Credit: cve@mitre.org
Affected Software | Affected Version | How to fix |
---|---|---|
Ipsec-tools | <=0.6.2 |
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CVE-2007-1841 has a severity rating of medium due to its potential to cause denial of service.
To fix CVE-2007-1841, upgrade to Ipsec-tools version 0.6.7 or later.
CVE-2007-1841 enables remote attackers to crash VPN tunnels by sending specially crafted ISAKMP messages.
CVE-2007-1841 affects Ipsec-tools versions earlier than 0.6.7.
Temporary workarounds include implementing strict firewall rules to filter out malicious ISAKMP messages.