| Package | Affected versions | Patched versions |
|---|---|---|
| dhcp | = 3.0= 3.0.1= 3.0.2= 3.0.3= 3.0.4= 3.0.5= 3.0.6= 3.1-esv= 3.1.0= 3.1.1= 3.1.2= 3.1.3= 4.1-esv= 4.2.0= 4.2.1 |
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.
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