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
Published Aug 20, 2005
5.0
MEDIUMCVSS 2.0
EPSS 7.09%
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.
Affected products
No data.
Configuration 1
- 3.0
- 3.1
- 3.2
- 3.3
- 3.3.1
Configuration 2
- 1.7
- 1.64
- 1.66
- 1.66_r2
- 1.73_r1
- 1.73_r2
- 2.0.1_r8
- 2.1
- 2.1_r6
- 2.1_r7
- 2.5
- 2.5r1
- 2.5r2
- 2.5r6
- 2.6.0
- 2.6.1
- 2.6.1r1
- 2.6.1r2
- 2.6.1r3
- 2.6.1r4
- 2.6.1r5
- 2.6.1r6
- 2.6.1r7
- 2.6.1r8
- 2.6.1r9
- 2.6.1r10
- 2.6.1r11
- 2.6.1r12
- 2.7.1
- 2.7.1r1
- 2.7.1r2
- 2.7.1r3
- 2.8
- 2.8_r1
- 2.10_r3
- 2.10_r4
- 3.0.0
- 3.0.0r1
- 3.0.0r2
- 3.0.0r3
- 3.0.0r4
- 3.0.1
- 3.0.1r1
- 3.0.1r2
- 3.0.1r3
- 3.0.1r4
- 3.0.1r5
- 3.0.1r6
- 3.0.1r7
- 3.0.2
- 3.0.3
- 3.0.3_r1.1
- 3.0.3r1
- 3.0.3r2
- 3.0.3r3
- 3.0.3r4
- 3.0.3r5
- 3.0.3r6
- 3.0.3r7
- 3.0.3r8
- 3.1.0
- 3.1.0r1
- 3.1.0r2
- 3.1.0r3
- 3.1.0r4
- 3.1.0r5
- 3.1.0r6
- 3.1.0r7
- 3.1.0r8
- 3.1.0r9
- 3.1.0r10
- 3.1.0r11
- 3.1.0r12
- 3.1.1_r2
- 4.0.0
- 4.0.0
- 4.0.0r1
- 4.0.0r2
- 4.0.0r3
- 4.0.0r4
- 4.0.0r5
- 4.0.0r6
- 4.0.0r7
- 4.0.0r8
- 4.0.0r9
- 4.0.0r10
- 4.0.0r11
- 4.0.0r12
- 4.0.1
- 4.0.1r1
- 4.0.1r2
- 4.0.1r3
- 4.0.1r4
- 4.0.1r5
- 4.0.1r6
- 4.0.1r7
- 4.0.1r8
- 4.0.1r9
- 4.0.1r10
- 4.0.2
- 4.0.3
- 4.0.3r1
- 4.0.3r2
- 4.0.3r3
- 4.0.3r4
- 5.0.0
- 5.1.0
- 5.1.0r3a
- 5.2.0
- n/a
- 3.0_.pe1.0
- 5.0.0_r6.0
- 0110.0_11_4.0_r10.0
- 0110.0_11_5.1.0_r3a
- 4110.0_11_4.0_r10.0
- 4110.0_11_5.1.0_r3a
- 5.0.0_r6.0
Configuration 3
- 5.0
- 3.0
- 3.0r1
- 3.0r2
- 3.0.1_r1
- 3.0.1_r1
- 3.0.1_r1
- 3.0.1_r1
- n/a
- 4.2_r2.2
- 4.2_r2.2
No data.
No Red Hat product state for this CVE.
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:P/I:N/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (10 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 7.09% (0.07093) | 94.04th | v5 (v2026.06.15) |
| Jun 15, 2026 | 7.09% (0.07093) | 93.39th | v5 (v2026.06.15) |
| Mar 30, 2025 | 5.88% (0.05881) | 89.64th | v4 (v2025.03.14) |
| Mar 29, 2025 | 9.98% (0.09983) | 88.30th | v4 (v2025.03.14) |
| Mar 17, 2025 | 5.52% (0.05518) | 89.53th | v4 (v2025.03.14) |
| Dec 12, 2024 | 3.07% (0.03067) | 91.37th | v3 (v2023.03.01) |
| Mar 7, 2023 | 3.07% (0.03067) | 89.46th | v3 (v2023.03.01) |
| Mar 6, 2023 | 4.48% (0.04482) | 88.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 4.48% (0.04482) | 87.66th | v2 (v2022.01.01) |
| Feb 4, 2022 | 4.48% (0.04482) | 71.45th | v2 (v2022.01.01) |
No CWE recorded.
References (5)
- http://marc.info/?l=bugtraq&m=112438068426034&w=2 mailing-listx_refsource_BUGTRAQ
- http://secunia.com/advisories/16474/ third-party-advisoryx_refsource_SECUNIAVendor Advisory
- http://securitytracker.com/id?1014728 vdb-entryx_refsource_SECTRACK
- http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm x_refsource_MISCExploitVendor Advisory
- http://www.securityfocus.com/bid/14595 vdb-entryx_refsource_BIDExploit
| Link | Providers | Tags |
|---|---|---|
| http://marc.info/?l=bugtraq&m=112438068426034&w=2 | mailing-listx_refsource_BUGTRAQ | |
| http://secunia.com/advisories/16474/ | third-party-advisoryx_refsource_SECUNIAVendor Advisory | |
| http://securitytracker.com/id?1014728 | vdb-entryx_refsource_SECTRACK | |
| http://www.nta-monitor.com/news/vpn-flaws/juniper/netscreen/index.htm | x_refsource_MISCExploitVendor Advisory | |
| http://www.securityfocus.com/bid/14595 | vdb-entryx_refsource_BIDExploit |
Change history (0)
No recorded changes yet.