CVE-2005-1802
CVE-2005-1802 is a medium-severity vulnerability in Nortel Contivity with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.
Key facts
- Severity: Medium (CVSS 2.0 base score 5.0)
- EPSS exploit prediction: 2% (73rd percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Nortel Contivity
- Published:
- Last modified:
Description
Nortel VPN Router (aka Contivity) allows remote attackers to cause a denial of service (crash) via an IPsec IKE packet with a malformed ISAKMP header.
Frequently asked questions
- What is CVE-2005-1802?
- Nortel VPN Router (aka Contivity) allows remote attackers to cause a denial of service (crash) via an IPsec IKE packet with a malformed ISAKMP header.
- How severe is CVE-2005-1802?
- CVE-2005-1802 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2005-1802 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2005-1802?
- CVE-2005-1802 primarily affects Nortel Contivity. In total, 17 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2005-1802?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2005-1802 published?
- CVE-2005-1802 was published on 2005-05-27 and last updated on 2026-06-16.
References
- http://securitytracker.com/id?1014068
- http://www.nta-monitor.com/news/vpn-flaws/nortel/vpn-router-dos/
- http://www.securityfocus.com/archive/1/399423
- http://www.securityfocus.com/bid/13792
Affected products (17)
- cpe:2.3:h:nortel:contivity:1000_vpn_switch:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:1500_vpn_switch:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:1600_secure_ip_services_gateway:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:2000_vpn_switch:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:2500_vpn_switch:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:2600_secure_ip_services_gateway:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:4000_vpn_switch:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:4500_secure_ip_services_gateway:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:contivity:4600_secure_ip_services_gateway:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_1010:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_1050:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_1100:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_1700:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_1740:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_2700:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_5000:*:*:*:*:*:*:*:*
- cpe:2.3:h:nortel:vpn_router_600:*:*:*:*:*:*:*:*
More vulnerabilities in Nortel Contivity
- CVE-2007-2333 — Critical (CVSS 10.0): Nortel VPN Router (aka Contivity) 1000, 2000, 4000, and 5000 before 5_05.149, 5_05.3xx before 5_05.304, and 6.x before…
- CVE-2007-2334 — High (CVSS 7.5): Nortel VPN Router (aka Contivity) 1000, 2000, 4000, and 5000 before 5_05.149, 5_05.3xx before 5_05.304, and 6.x before…
- CVE-2005-2579 — High (CVSS 7.2): Nortel Contivity VPN Client V05_01.030, when configuring a certificate to be used as authentication, does not properly…
- CVE-2004-1105 — Medium (CVSS 5.0): Nortel Networks Contivity VPN Client displays a different error message depending on whether the username is valid or…
- CVE-2000-0063 — Medium (CVSS 5.0): cgiproc CGI script in Nortel Contivity HTTP server allows remote attackers to read arbitrary files by specifying the…
- CVE-2000-0064 — Medium (CVSS 5.0): cgiproc CGI script in Nortel Contivity HTTP server allows remote attackers to cause a denial of service via a malformed…