CVE-2011-1930 in the critical feed json
In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$DEVICE.conf are not properly escaped.
published 2019-11-14 6 y ago modified 2026-06-16 4 mo ago also EUVD-2011-1928
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 20.5%
- EPSS 20.5% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
Summary
In klibc 1.5.20 and 1.5.21, the DHCP options written by ipconfig to /tmp/net-$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.
Patch / fix
- klibc_project klibc 1.5.25
- klibc Debian 14, Debian 13, Debian 12 1.5.22-1
debian advisories DEBIAN-CVE-2011-1930
Timeline
- First public exploit (EDB-35785)
- Published
Exploit prediction
20.53% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-09).
Exploits and checks
- EDB-35785 klibc 1.5.2 - DHCP Options Processing Remote Shell Command Execution remote, 2011-05-18
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Affected products
- klibc klibc
References
-
security-tracker.debian.org
/tracker/CVE-2011-1930
third-party-advisory
-
access.redhat.com
/security/cve/cve-2011-1930
not-applicable, third-party-advisory
-
security.gentoo.org
/glsa/glsa-201309-21.xml
third-party-advisory
-
openwall.com
/lists/oss-security/2012/05/22/12
mailing-list, third-party-advisory
-
securityfocus.com
/bid/47924
third-party-advisory, vdb-entry
Sources
- CVE List CVE-2011-1930
- NVD CVE-2011-1930
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.