CVE-2009-0692 in the critical feed json
Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.…
published 2009-07-14 17 y ago modified 2026-06-16 4 mo ago also EUVD-2009-0692
- cvss
- 10.0
- version 2.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 25.8%
- EPSS 25.8% chance of exploitation in 30 days, percentile 97%
- public exploits
- 1
- Exploit-DB
Summary
Stack-based buffer overflow in the script_write_params method in client/dhclient.c in ISC DHCP dhclient 4.1 before 4.1.0p1, 4.0 before 4.0.1p1, 3.1 before 3.1.2p1, 3.0, and 2.0 allows remote DHCP servers to execute arbitrary code via a crafted subnet-mask option.
Patch / fix
- dhcp RHEL 3 7:3.0.1-10.2_EL3
- dhclient RHEL 3 7:3.0.1-10.2_EL3
- dhcp RHEL 4 7:3.0.1-65.el4_8.1
- dhclient RHEL 4 7:3.0.1-65.el4_8.1
- dhcp RHEL 4.7 EUS 7:3.0.1-62.el4_7.1
- dhclient RHEL 4.7 EUS 7:3.0.1-62.el4_7.1
red hat advisories RHSA-2009:1154RHSA-2009:1136
- isc.org/node/468 advisory
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2009-0692 updated cvss 8.3
dhclient: stack overflow leads to arbitrary code execution as root
-
Red Hat Desktop version 3 dhcp 3.0.1-10.2_EL3, dhclient 3.0.1-10.2_EL3fixed: vendor fix RHSA-2009:1154
-
Red Hat Enterprise Linux AS EUS (v. 4.7) dhcp 3.0.1-62.el4_7.1, dhclient 3.0.1-62.el4_7.1fixed: vendor fix RHSA-2009:1136
-
Red Hat Enterprise Linux AS version 3 dhcp 3.0.1-10.2_EL3, dhclient 3.0.1-10.2_EL3fixed: vendor fix RHSA-2009:1154
-
Red Hat Enterprise Linux AS version 4 dhcp 3.0.1-65.el4_8.1, dhclient 3.0.1-65.el4_8.1 Red Hat Enterprise Linux Desktop version 4 dhcp 3.0.1-65.el4_8.1, dhclient 3.0.1-65.el4_8.1 Red Hat Enterprise Linux ES EUS (v. 4.7) dhcp 3.0.1-62.el4_7.1, dhclient 3.0.1-62.el4_7.1fixed: vendor fix RHSA-2009:1136
-
Red Hat Enterprise Linux ES version 3 dhcp 3.0.1-10.2_EL3, dhclient 3.0.1-10.2_EL3fixed: vendor fix RHSA-2009:1154
-
Red Hat Enterprise Linux ES version 4 dhcp 3.0.1-65.el4_8.1, dhclient 3.0.1-65.el4_8.1fixed: vendor fix RHSA-2009:1136
-
Red Hat Enterprise Linux WS version 3 dhcp 3.0.1-10.2_EL3, dhclient 3.0.1-10.2_EL3fixed: vendor fix RHSA-2009:1154
-
Red Hat Enterprise Linux WS version 4 dhcp 3.0.1-65.el4_8.1, dhclient 3.0.1-65.el4_8.1fixed: vendor fix RHSA-2009:1136
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
Timeline
- Published
- First public exploit (EDB-9265)
Exploit prediction
25.78% chance of exploitation in the next 30 days, higher than 97% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- EDB-9265 ISC DHCP dhclient < 3.1.2p1 - Remote Buffer Overflow (PoC) dos, 2009-07-27
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 2.0 | 10.0 | AV:N/AC:L/Au:N/C:C/I:C/A:C |
Classification
- Weakness
-
- CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
References
-
isc.org
/node/468
patch, vendor-advisory
-
itrc.hp.com
/service/cki/docDisplay.do?docId=emr_na-c02286083
vendor-advisory
-
lists.opensuse.org
/opensuse-security-announce/2009-07/msg00003.html
vendor-advisory
-
redhat.com
/archives/fedora-package-announce/2009-November/msg00340.html
vendor-advisory
-
debian.org
/security/2009/dsa-1833
vendor-advisory
-
security.gentoo.org
/glsa/glsa-200907-12.xml
vendor-advisory
-
mandriva.com
/security/advisories?name=MDVSA-2009:151
vendor-advisory
-
redhat.com
/support/errata/RHSA-2009-1136.html
vendor-advisory
-
ubuntu.com
/usn/usn-803-1
vendor-advisory
-
ftp.netbsd.org
/pub/NetBSD/security/advisories/NetBSD-SA2009-010.txt.asc
vendor-advisory
-
redhat.com
/support/errata/RHSA-2009-1154.html
vendor-advisory
-
slackware.com
/security/viewer.php?l=slackware-security&y=2009&m=slackware-security.561471
vendor-advisory
-
redhat.com
/archives/fedora-package-announce/2009-August/msg01177.html
vendor-advisory
-
secunia.com
/advisories/35785
third-party-advisory, vendor-advisory
-
vupen.com
/english/advisories/2009/1891
vdb-entry
-
secunia.com
/advisories/35830
third-party-advisory
- bugzilla.redhat.com /show_bug.cgi?id=507717
-
secunia.com
/advisories/35832
third-party-advisory
-
secunia.com
/advisories/35850
third-party-advisory
-
kb.cert.org
/vuls/id/410676
third-party-advisory, us-government-resource
-
secunia.com
/advisories/35880
third-party-advisory
-
secunia.com
/advisories/40551
third-party-advisory
-
osvdb.org
/55819
vdb-entry
-
securityfocus.com
/bid/35668
vdb-entry
-
secunia.com
/advisories/35831
third-party-advisory
-
secunia.com
/advisories/35829
third-party-advisory
-
vupen.com
/english/advisories/2010/1796
vdb-entry
-
secunia.com
/advisories/35841
third-party-advisory
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5941
vdb-entry, signature
-
oval.cisecurity.org
/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A10758
vdb-entry, signature
- isc.org /downloadables/12
-
secunia.com
/advisories/37342
third-party-advisory
-
secunia.com
/advisories/35851
third-party-advisory
-
secunia.com
/advisories/35849
third-party-advisory
-
securitytracker.com
/id?1022548
vdb-entry
-
secunia.com
/advisories/36457
third-party-advisory
Sources
- CVE List CVE-2009-0692
- NVD CVE-2009-0692
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