CVE-2001-0851
CVE-2001-0851 is a medium-severity vulnerability in Caldera Openlinux Server 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: 3% (86th percentile)
- Actively exploited: Not listed in CISA KEV
- Affected product: Caldera Openlinux Server
- Published:
- Last modified:
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.
Frequently asked questions
- What is CVE-2001-0851?
- 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.
- How severe is CVE-2001-0851?
- CVE-2001-0851 has a CVSS 2.0 base score of 5.0, rated medium severity.
- Is CVE-2001-0851 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (86th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2001-0851?
- CVE-2001-0851 primarily affects Caldera Openlinux Server. In total, 14 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2001-0851?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- When was CVE-2001-0851 published?
- CVE-2001-0851 was published on 2001-12-06 and last updated on 2026-06-16.
References
- http://distro.conectiva.com.br/atualizacoes/?id=a&anuncio=000432
- http://www.caldera.com/support/security/advisories/CSSA-2001-038.0.txt
- http://www.linux-mandrake.com/en/security/2001/MDKSA-2001-082.php3
- http://www.linuxsecurity.com/advisories/other_advisory-1683.html
- http://www.novell.com/linux/security/advisories/2001_039_kernel2_txt.html
- http://www.redhat.com/support/errata/RHSA-2001-142.html
- https://exchange.xforce.ibmcloud.com/vulnerabilities/7461
Affected products (14)
- cpe:2.3:a:caldera:openlinux_server:3.1:*:*:*:*:*:*:*
- cpe:2.3:a:caldera:openlinux_workstation:3.1:*:*:*:*:*:*:*
- cpe:2.3:o:caldera:openlinux:2.3:*:*:*:*:*:*:*
- cpe:2.3:o:caldera:openlinux_edesktop:2.4:*:*:*:*:*:*:*
- cpe:2.3:o:caldera:openlinux_eserver:2.3.1:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.2.0:*:*:*:*:*:*:*
- cpe:2.3:o:linux:linux_kernel:2.4.0:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux:6.3:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux:6.4:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux:7.0:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux:7.1:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux:7.2:*:*:*:*:*:*:*
- cpe:2.3:o:suse:suse_linux:7.3:*:*:*:*:*:*:*
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