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Vulnerability record · CVE-2011-1930 · published 14 November 2019

CVE-2011-1930: Klibc project klibc vulnerability

KKlibc Project · Klibc

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.

9.8 CVSS 3.1 Critical EPSS 21% · top 2.6%
9.8CVSS 3.1 base score, v2 10.0
21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
10References
16 Jun 2026Last modified by NVD

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.

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

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://security.gentoo.org/glsa/glsa-201309-21.xml Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/05/22/12 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/47924 Third Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/cve-2011-1930 Not ApplicableThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-1930 Third Party Advisory
http://security.gentoo.org/glsa/glsa-201309-21.xml Third Party Advisory
http://www.openwall.com/lists/oss-security/2012/05/22/12 Mailing ListThird Party Advisory
http://www.securityfocus.com/bid/47924 Third Party AdvisoryVDB Entry
https://access.redhat.com/security/cve/cve-2011-1930 Not ApplicableThird Party Advisory
https://security-tracker.debian.org/tracker/CVE-2011-1930 Third Party Advisory

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Source: NIST National Vulnerability Database (record CVE-2011-1930), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.