security flaw
Published Mar 9, 2002
5.0
MEDIUMCVSS 2.0
EPSS 3.09%
Description
Linux kernel 2.0, 2.2 and 2.4 with syncookies enabled allows remote attackers to bypass firewall rules by brute force guessing the cookie.
Affected products
No data.
Configuration 1
- 3.1
- 3.1
Configuration 2
- 2.3
- 2.4
- 2.3.1
- 2.0
- 2.2.0
- 2.4.0
- 6.3
- 6.4
- 7.0
- 7.1
- 7.2
- 7.3
No data.
Red Hat Linux 6.2
n/a
Fixed · RHSA-2001:142
Red Hat Linux 7.0
n/a
Fixed · RHSA-2001:142
Red Hat Linux 7.1
n/a
Fixed · RHSA-2001:142
Red Hat Linux 7.2
n/a
Fixed · RHSA-2001:142
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Linux 6.2 | n/a | Fixed | RHSA-2001:142 |
| Red Hat Linux 7.0 | n/a | Fixed | RHSA-2001:142 |
| Red Hat Linux 7.1 | n/a | Fixed | RHSA-2001:142 |
| Red Hat Linux 7.2 | n/a | Fixed | RHSA-2001:142 |
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 | 3.09% (0.03087) | 87.25th | v5 (v2026.06.15) |
| Jun 15, 2026 | 3.09% (0.03087) | 85.96th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.62% (0.00623) | 68.36th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.14% (0.00142) | 51.46th | v3 (v2023.03.01) |
| Jun 21, 2024 | 0.14% (0.00142) | 50.18th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.14% (0.00142) | 48.16th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.32% (0.01319) | 71.27th | v2 (v2022.01.01) |
| Feb 23, 2023 | 1.32% (0.01319) | 71.23th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.32% (0.01319) | 69.22th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.32% (0.01319) | 44.98th | v2 (v2022.01.01) |
No CWE recorded.
References (11)
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000432 vendor-advisoryx_refsource_CONECTIVA
- http://www.caldera.com/support/security/advisories/CSSA-2001-038.0.txt vendor-advisoryx_refsource_CALDERAPatchVendor Advisory
- http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-082.php3 vendor-advisoryx_refsource_MANDRAKE
- http://www.linuxsecurity.com/advisories/other_advisory-1683.html vendor-advisoryx_refsource_ENGARDEPatchVendor Advisory
- http://www.novell.com/linux/security/advisories/2001_039_kernel2_txt.html vendor-advisoryx_refsource_SUSE
- http://www.redhat.com/support/errata/RHSA-2001-142.html vendor-advisoryx_refsource_REDHAT
- https://access.redhat.com/security/cve/CVE-2001-0851 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1616625 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7461 vdb-entryx_refsource_XF
- https://nvd.nist.gov/vuln/detail/CVE-2001-0851
- https://www.cve.org/CVERecord?id=CVE-2001-0851
| Link | Providers | Tags |
|---|---|---|
| http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000432 | vendor-advisoryx_refsource_CONECTIVA | |
| http://www.caldera.com/support/security/advisories/CSSA-2001-038.0.txt | vendor-advisoryx_refsource_CALDERAPatchVendor Advisory | |
| http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-082.php3 | vendor-advisoryx_refsource_MANDRAKE | |
| http://www.linuxsecurity.com/advisories/other_advisory-1683.html | vendor-advisoryx_refsource_ENGARDEPatchVendor Advisory | |
| http://www.novell.com/linux/security/advisories/2001_039_kernel2_txt.html | vendor-advisoryx_refsource_SUSE | |
| http://www.redhat.com/support/errata/RHSA-2001-142.html | vendor-advisoryx_refsource_REDHAT | |
| https://access.redhat.com/security/cve/CVE-2001-0851 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1616625 | Issue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/7461 | vdb-entryx_refsource_XF | |
| https://nvd.nist.gov/vuln/detail/CVE-2001-0851 | ||
| https://www.cve.org/CVERecord?id=CVE-2001-0851 |
Change history (0)
No recorded changes yet.