CVE-2011-0997
HIGH severity · CVSS 7.5 · Improper input validation
7.5CVSS HIGH
Summary
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.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges required—
User interaction—
Confidentiality impact—
Integrity impact—
Availability impact—
Exploit probability (EPSS)84%
AV:N/AC:L/Au:N/C:P/I:P/A:P
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057888.htmlAdvisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058279.htmlAdvisory
- http://marc.info/?l=bugtraq&m=133226187115472&w=2Advisory
- http://secunia.com/advisories/44037Advisory
- http://secunia.com/advisories/44048Advisory
- http://secunia.com/advisories/44089Advisory
- http://secunia.com/advisories/44090Advisory