CVE-2011-1930

Name: CVE-2011-1930
Creator: NVD / NIST
Published: 2019-11-14T03:15:10.51+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 20.53%

Last modified Jun 16, 2026

CVE-2011-1930 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 20.53% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

9.8/10

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

EPSS Probability

20.53%

97.2th percentile

Probability of exploitation in the next 30 days. Learn more

Affected Software

Vendor	Product	Versions
Klibc Project	Klibc	< 1.5.25
Debian	Debian Linux	8.0
Debian	Debian Linux	9.0
Debian	Debian Linux	10.0

References

http://security.gentoo.org/glsa/glsa-201309-21.xmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2012/05/22/12Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/47924Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2011-1930Not Applicable, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-1930Third Party Advisory
http://security.gentoo.org/glsa/glsa-201309-21.xmlThird Party Advisory
http://www.openwall.com/lists/oss-security/2012/05/22/12Mailing List, Third Party Advisory
http://www.securityfocus.com/bid/47924Third Party Advisory, VDB Entry
https://access.redhat.com/security/cve/cve-2011-1930Not Applicable, Third Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-1930Third Party Advisory

Timeline

Published: Nov 14, 2019
Last Modified: Jun 16, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2011-1930?

How severe is CVE-2011-1930?

CVE-2011-1930 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 20.53% probability of exploitation in the next 30 days.

How do I fix CVE-2011-1930?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2011-1930?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST