CVE-2005-2640 EXPLOIT
5.0
MEDIUM · CVSS 2.0 · EPSS 7.1% (pctl 94)
Patch early
A public exploit exists.
Description
Behavioral discrepancy information leak in Juniper Netscreen VPN running ScreenOS 5.2.0 and earlier, when using IKE with pre-shared key authentication, allows remote attackers to enumerate valid usernames via an IKE Aggressive Mode packet, which generates a response if the username is valid but does not respond when the username is invalid.
Scoring
| CVSS | 5.0 (MEDIUM, v2.0) |
|---|---|
| Vector | AV:N/AC:L/Au:N/C:P/I:N/A:N |
| EPSS | 7.09% — more likely to be exploited than 94% of all CVEs |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2005-08-23 |
| Last modified | 2026-06-16 |
Affected (16)
| Vendor | Product |
|---|---|
| juniper | netscreen screenos |
| juniper | netscreen-5gt |
| juniper | netscreen-idp |
| juniper | netscreen-idp 10 |
| juniper | netscreen-idp 100 |
| juniper | netscreen-idp 1000 |
| juniper | netscreen-idp 500 |
| neoteris | instant virtual extranet |
| netscreen | netscreen-sa 5000 series |
| netscreen | netscreen-sa 5020 series |
| netscreen | netscreen-sa 5050 series |
| netscreen | ns-10 |
| netscreen | ns-100 |
| netscreen | ns-204 |
| netscreen | ns-500 |
| netscreen | ns-50ns25 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Juniper NetScreen 5.0 - VPN 'Username' Enumeration | 2005-08-18 |
References
- http://marc.info/?l=bugtraq&m=112438068426034&w=2
- http://secunia.com/advisories/16474/
- http://securitytracker.com/id?1014728
- http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm
- http://www.securityfocus.com/bid/14595
- http://marc.info/?l=bugtraq&m=112438068426034&w=2
- http://secunia.com/advisories/16474/
- http://securitytracker.com/id?1014728
- http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm
- http://www.securityfocus.com/bid/14595
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