Resource exhaustion in Linux Kernel
CVE-2011-2189
net/core/net_namespace.c in the Linux kernel 2.6.32 and earlier does not properly handle a high rate of creation and cleanup of network namespaces, which makes it easier for remote attackers to cause a denial of service (memory consumption) via requests to a daemon that requires a separate namespace per connection, as demonstrated by vsftpd.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.179 (97.1th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.179 · newest: 0.179 · change: 0.000
Affected products
- Linux Kernel
- Canonical Ubuntu Linux — versions 10.04, 10.10, 11.04
- Debian Linux — versions 5.0, 6.0, 7.0
- Red Hat Enterprise Linux — versions 6.0
- Red Hat Enterprise Mrg — versions 2.0
Weakness classification (CWE)
References
- bugzilla.redhat.com/show_bug.cgi (Exploit, Patch, Third Party Advisory, Issue Tracking)
- bugs.launchpad.net/ubuntu/+source/linux/+bug/720095 (Exploit, Third Party Advisory)
- neil.brown.name/git
- www.openwall.com/lists/oss-security/2011/06/06/20 (mailing-list, Mailing List, Third Party Advisory)
- www.openwall.com/lists/oss-security/2011/06/06/10 (mailing-list, Mailing List, Third Party Advisory)
- ie.archive.ubuntu.com/linux/kernel/v2.6/ChangeLog-2.6.33 (Broken Link)
- www.debian.org/security/2011/dsa-2305 (vendor-advisory, Third Party Advisory)
- patchwork.ozlabs.org/patch/88217/ (Patch, Mailing List, Third Party Advisory)
- kerneltrap.org/mailarchive/git-commits-head/2009/12/8/15289 (mailing-list, Broken Link)
- bugs.debian.org/cgi-bin/bugreport.cgi (Exploit, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2011-2189?
- CVE-2011-2189 is a high-severity vulnerability in Linux Kernel, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2011-10-10.
- How severe is CVE-2011-2189?
- High severity. CVSS v3 base score is 7.5 out of 10.