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CVE-2011-1930

CriticalPublished

In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send...

Published: Nov 14, 2019
Updated: Aug 6, 2024
Assigning CNA: redhat
Evidence observed: May 18, 2011

Primary CVSS

9.8/ 10Critical

nvd · CVSS 3.1

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS probability estimate

20.5%

Moderate · next 30 days

Percentile: 97.5%
Model date: Oct 12, 2026

EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.

Summary

In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped. This may allow a remote attacker to send a specially crafted DHCP reply which could execute arbitrary code with the privileges of any process which sources DHCP options.

Sources

klibc 1.5.2 - DHCP Options Processing Remote Shell Command ExecutionExploit
maximilian attems · linux · May 18, 2011

Responsible use

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