CVE-2011-0997 Command injection in n/a
High 7.5
Published
Updated
Check this codebase for CVE-2011-0997 and fix it if it is affected.
What it is: CVE-2011-0997 is a high-severity command injection vulnerability in Canonical Ubuntu Linux, published on 8 Apr 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2011-0997 in the wild and no public exploit code.
Affected product: Canonical Ubuntu Linux. No package-level version data is available, so check the vendor advisory linked from the reference page.
Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.
Reference: https://insights.sbomify.com/CVE-2011-0997/ (Markdown: https://insights.sbomify.com/CVE-2011-0997/index.md)
Remote attackers can execute arbitrary commands on systems using ISC DHCP client by sending malicious hostnames in DHCP messages.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2011-0997?
CVE-2011-0997 is a high-severity command injection vulnerability in Canonical Ubuntu Linux, published on 8 Apr 2011. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to dhclient-script.
Weakness: CWE-20
Which versions are affected by CVE-2011-0997?
It affects 3 products.
Linux distribution packages (40)
dhclient Red Hat:enterprise_linux:4::as | All versions | 7:3.0.1-67.el4 |
dhcp Red Hat:enterprise_linux:4::as | All versions | 7:3.0.1-67.el4 |
dhcp-debuginfo Red Hat:enterprise_linux:4::as | All versions | 7:3.0.1-67.el4 |
dhcp-devel Red Hat:enterprise_linux:4::as | All versions | 7:3.0.1-67.el4 |
dhclient Red Hat:enterprise_linux:4::desktop | All versions | 7:3.0.1-67.el4 |
dhcp Red Hat:enterprise_linux:4::desktop | All versions | 7:3.0.1-67.el4 |
dhcp-debuginfo Red Hat:enterprise_linux:4::desktop | All versions | 7:3.0.1-67.el4 |
dhcp-devel Red Hat:enterprise_linux:4::desktop | All versions | 7:3.0.1-67.el4 |
dhclient Red Hat:enterprise_linux:4::es | All versions | 7:3.0.1-67.el4 |
dhcp Red Hat:enterprise_linux:4::es | All versions | 7:3.0.1-67.el4 |
dhcp-debuginfo Red Hat:enterprise_linux:4::es | All versions | 7:3.0.1-67.el4 |
dhcp-devel Red Hat:enterprise_linux:4::es | All versions | 7:3.0.1-67.el4 |
dhclient Red Hat:enterprise_linux:4::ws | All versions | 7:3.0.1-67.el4 |
dhcp Red Hat:enterprise_linux:4::ws | All versions | 7:3.0.1-67.el4 |
dhcp-debuginfo Red Hat:enterprise_linux:4::ws | All versions | 7:3.0.1-67.el4 |
dhcp-devel Red Hat:enterprise_linux:4::ws | All versions | 7:3.0.1-67.el4 |
dhclient Red Hat:enterprise_linux:5::server | All versions | 12:3.0.5-23.el5_6.4 |
dhcp Red Hat:enterprise_linux:5::server | All versions | 12:3.0.5-23.el5_6.4 |
dhcp-debuginfo Red Hat:enterprise_linux:5::server | All versions | 12:3.0.5-23.el5_6.4 |
dhcp-devel Red Hat:enterprise_linux:5::server | All versions | 12:3.0.5-23.el5_6.4 |
libdhcp4client Red Hat:enterprise_linux:5::server | All versions | 12:3.0.5-23.el5_6.4 |
libdhcp4client-devel Red Hat:enterprise_linux:5::server | All versions | 12:3.0.5-23.el5_6.4 |
dhclient Red Hat:enterprise_linux:6::client | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp Red Hat:enterprise_linux:6::client | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-debuginfo Red Hat:enterprise_linux:6::client | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-devel Red Hat:enterprise_linux:6::client | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhclient Red Hat:enterprise_linux:6::computenode | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp Red Hat:enterprise_linux:6::computenode | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-debuginfo Red Hat:enterprise_linux:6::computenode | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-devel Red Hat:enterprise_linux:6::computenode | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhclient Red Hat:enterprise_linux:6::server | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp Red Hat:enterprise_linux:6::server | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-debuginfo Red Hat:enterprise_linux:6::server | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-devel Red Hat:enterprise_linux:6::server | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhclient Red Hat:enterprise_linux:6::workstation | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp Red Hat:enterprise_linux:6::workstation | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-debuginfo Red Hat:enterprise_linux:6::workstation | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhcp-devel Red Hat:enterprise_linux:6::workstation | All versions | 12:4.1.1-12.P1.el6_0.4 |
dhclient Red Hat:rhel_els:3::as | All versions | 7:3.0.1-10.3_EL3 |
dhcp Red Hat:rhel_els:3::as | All versions | 7:3.0.1-10.3_EL3 |
Products include Canonical Ubuntu Linux, Debian Debian Linux, Isc Dhcp.
How do I fix CVE-2011-0997?
Upgrade to a fixed version.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2011-0997 being exploited?
There is no known exploitation of CVE-2011-0997 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2011-0997, DSA-2216-1, DSA-2217-1, GHSA-hhcj-97jg-v79c, RHSA-2011:0428, RHSA-2011:0840.