HIGH
dhclient: insufficient sanitization of certain DHCP response values
Published Apr 8, 2011
7.5
HIGHCVSS 2.0
EPSS 84.57%
Description
dhclient in ISC DHCP 3.0.x through 4.2.x before 4.2.1-P1, 3.1-ESV before 3.1-ESV-R1, and 4.1-ESV before 4.1-ESV-R2 allows remote attackers to execute arbitrary commands via shell metacharacters in a hostname obtained from a DHCP message, as demonstrated by a hostname that is provided to dhclient-script.
Affected products
No data.
Configuration 1
OR
- 3.0
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.1
- 3.0.2
- 3.0.2
- 3.0.2
- 3.0.2
- 3.0.2
- 3.0.3
- 3.0.3
- 3.0.3
- 3.0.3
- 3.0.4
- 3.0.4
- 3.0.4
- 3.0.4
- 3.0.4
- 3.0.5
- 3.0.5
- 3.0.6
- 3.1-esv
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.0
- 3.1.1
- 3.1.1
- 3.1.2
- 3.1.2
- 3.1.2
- 3.1.3
- 3.1.3
- 3.1.3
Configuration 2
OR
- 4.1-esv
- 4.1-esv
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.0
- 4.2.1
- 4.2.1
- 4.2.1
Configuration 3
OR
- 5.0
- 6.0
- 7.0
Configuration 4
OR
- 6.06
- 8.04
- 9.10
- 10.04
- 10.10
No data.
Red Hat Enterprise Linux 3 Extended Lifecycle Support
dhcp-7:3.0.1-10.3_EL3
Fixed · RHSA-2011:0840
Red Hat Enterprise Linux 4
dhcp-7:3.0.1-67.el4
Fixed · RHSA-2011:0428
Red Hat Enterprise Linux 5
dhcp-12:3.0.5-23.el5_6.4
Fixed · RHSA-2011:0428
Red Hat Enterprise Linux 6
dhcp-12:4.1.1-12.P1.el6_0.4
Fixed · RHSA-2011:0428
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 3 Extended Lifecycle Support | dhcp-7:3.0.1-10.3_EL3 | Fixed | RHSA-2011:0840 |
| Red Hat Enterprise Linux 4 | dhcp-7:3.0.1-67.el4 | Fixed | RHSA-2011:0428 |
| Red Hat Enterprise Linux 5 | dhcp-12:3.0.5-23.el5_6.4 | Fixed | RHSA-2011:0428 |
| Red Hat Enterprise Linux 6 | dhcp-12:4.1.1-12.P1.el6_0.4 | Fixed | RHSA-2011:0428 |
No package ranges for this CVE.
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
No CVSS v3.1 score for this CVE.
No CVSS v3.0 score for this CVE.
7.5 HIGH NVD
AV:N/AC:L/Au:N/C:P/I:P/A:P
Access Vector Network
Access Complexity Low
Authentication None
Confidentiality Impact Partial
Integrity Impact Partial
Availability Impact Partial
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
84.57% 0.84569
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
EPSS probability 0.84569
Score over time
2022–2026- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v2
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (15 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 84.57% (0.84569) | 99.70th | v5 (v2026.06.15) |
| Jun 15, 2026 | 84.17% (0.84172) | 99.66th | v5 (v2026.06.15) |
| Feb 22, 2026 | 73.50% (0.73501) | 98.77th | v4 (v2025.03.14) |
| Oct 28, 2025 | 81.40% (0.81401) | 99.12th | v4 (v2025.03.14) |
| Mar 30, 2025 | 71.98% (0.71985) | 98.66th | v4 (v2025.03.14) |
| Mar 29, 2025 | 76.06% (0.76058) | 98.59th | v4 (v2025.03.14) |
| Mar 17, 2025 | 71.98% (0.71985) | 98.65th | v4 (v2025.03.14) |
| Dec 17, 2024 | 91.61% (0.91608) | 99.15th | v3 (v2023.03.01) |
| Dec 12, 2024 | 96.79% (0.96790) | 99.74th | v3 (v2023.03.01) |
| Jun 8, 2024 | 96.95% (0.96946) | 99.73th | v3 (v2023.03.01) |
| Apr 24, 2024 | 97.03% (0.97034) | 99.74th | v3 (v2023.03.01) |
| Mar 7, 2023 | 97.07% (0.97070) | 99.56th | v3 (v2023.03.01) |
| Mar 6, 2023 | 15.27% (0.15272) | 95.95th | v2 (v2022.01.01) |
| Apr 1, 2022 | 15.27% (0.15272) | 95.58th | v2 (v2022.01.01) |
| Feb 4, 2022 | 15.27% (0.15272) | 91.38th | v2 (v2022.01.01) |
Weaknesses (2)
References (38)
- http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 x_refsource_CONFIRMThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057888.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058279.html vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory
- http://marc.info/?l=bugtraq&m=133226187115472&w=2 vendor-advisoryx_refsource_HPMailing ListThird Party Advisory
- http://secunia.com/advisories/44037 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/44048 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/44089 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/44090 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/44103 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/44127 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://secunia.com/advisories/44180 third-party-advisoryx_refsource_SECUNIAThird Party Advisory
- http://security.gentoo.org/glsa/glsa-201301-06.xml vendor-advisoryx_refsource_GENTOOThird Party Advisory
- http://securitytracker.com/id?1025300 vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry
- http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593345 vendor-advisoryx_refsource_SLACKWAREThird Party Advisory
- http://www.debian.org/security/2011/dsa-2216 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.debian.org/security/2011/dsa-2217 vendor-advisoryx_refsource_DEBIANThird Party Advisory
- http://www.kb.cert.org/vuls/id/107886 third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource
- http://www.mandriva.com/security/advisories?name=MDVSA-2011:073 vendor-advisoryx_refsource_MANDRIVAThird Party Advisory
- http://www.osvdb.org/71493 vdb-entryx_refsource_OSVDBBroken Link
- http://www.redhat.com/support/errata/RHSA-2011-0428.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.redhat.com/support/errata/RHSA-2011-0840.html vendor-advisoryx_refsource_REDHATThird Party Advisory
- http://www.securityfocus.com/bid/47176 vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry
- http://www.ubuntu.com/usn/USN-1108-1 vendor-advisoryx_refsource_UBUNTUThird Party Advisory
- http://www.vupen.com/english/advisories/2011/0879 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/0886 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/0909 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/0915 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/0926 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/0965 vdb-entryx_refsource_VUPENPermissions Required
- http://www.vupen.com/english/advisories/2011/1000 vdb-entryx_refsource_VUPENPermissions Required
- https://access.redhat.com/security/cve/CVE-2011-0997 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=689832 x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory
- https://exchange.xforce.ibmcloud.com/vulnerabilities/66580 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2011-0997
- https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12812 vdb-entrysignaturex_refsource_OVALThird Party Advisory
- https://www.cve.org/CVERecord?id=CVE-2011-0997
- https://www.exploit-db.com/exploits/37623/ exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry
- https://www.isc.org/software/dhcp/advisories/cve-2011-0997 x_refsource_CONFIRMPatchVendor Advisory
| Link | Providers | Tags |
|---|---|---|
| http://kb.juniper.net/InfoCenter/index?page=content&id=JSA10761 | x_refsource_CONFIRMThird Party Advisory | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-April/057888.html | vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory | |
| http://lists.fedoraproject.org/pipermail/package-announce/2011-April/058279.html | vendor-advisoryx_refsource_FEDORAMailing ListThird Party Advisory | |
| http://marc.info/?l=bugtraq&m=133226187115472&w=2 | vendor-advisoryx_refsource_HPMailing ListThird Party Advisory | |
| http://secunia.com/advisories/44037 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://secunia.com/advisories/44048 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://secunia.com/advisories/44089 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://secunia.com/advisories/44090 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://secunia.com/advisories/44103 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://secunia.com/advisories/44127 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://secunia.com/advisories/44180 | third-party-advisoryx_refsource_SECUNIAThird Party Advisory | |
| http://security.gentoo.org/glsa/glsa-201301-06.xml | vendor-advisoryx_refsource_GENTOOThird Party Advisory | |
| http://securitytracker.com/id?1025300 | vdb-entryx_refsource_SECTRACKThird Party AdvisoryVDB Entry | |
| http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.593345 | vendor-advisoryx_refsource_SLACKWAREThird Party Advisory | |
| http://www.debian.org/security/2011/dsa-2216 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.debian.org/security/2011/dsa-2217 | vendor-advisoryx_refsource_DEBIANThird Party Advisory | |
| http://www.kb.cert.org/vuls/id/107886 | third-party-advisoryx_refsource_CERT-VNThird Party AdvisoryUS Government Resource | |
| http://www.mandriva.com/security/advisories?name=MDVSA-2011:073 | vendor-advisoryx_refsource_MANDRIVAThird Party Advisory | |
| http://www.osvdb.org/71493 | vdb-entryx_refsource_OSVDBBroken Link | |
| http://www.redhat.com/support/errata/RHSA-2011-0428.html | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| http://www.redhat.com/support/errata/RHSA-2011-0840.html | vendor-advisoryx_refsource_REDHATThird Party Advisory | |
| http://www.securityfocus.com/bid/47176 | vdb-entryx_refsource_BIDThird Party AdvisoryVDB Entry | |
| http://www.ubuntu.com/usn/USN-1108-1 | vendor-advisoryx_refsource_UBUNTUThird Party Advisory | |
| http://www.vupen.com/english/advisories/2011/0879 | vdb-entryx_refsource_VUPENPermissions Required | |
| http://www.vupen.com/english/advisories/2011/0886 | vdb-entryx_refsource_VUPENPermissions Required | |
| http://www.vupen.com/english/advisories/2011/0909 | vdb-entryx_refsource_VUPENPermissions Required | |
| http://www.vupen.com/english/advisories/2011/0915 | vdb-entryx_refsource_VUPENPermissions Required | |
| http://www.vupen.com/english/advisories/2011/0926 | vdb-entryx_refsource_VUPENPermissions Required | |
| http://www.vupen.com/english/advisories/2011/0965 | vdb-entryx_refsource_VUPENPermissions Required | |
| http://www.vupen.com/english/advisories/2011/1000 | vdb-entryx_refsource_VUPENPermissions Required | |
| https://access.redhat.com/security/cve/CVE-2011-0997 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=689832 | x_refsource_CONFIRMIssue TrackingPatchThird Party Advisory | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/66580 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry | |
| https://nvd.nist.gov/vuln/detail/CVE-2011-0997 | ||
| https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A12812 | vdb-entrysignaturex_refsource_OVALThird Party Advisory | |
| https://www.cve.org/CVERecord?id=CVE-2011-0997 | ||
| https://www.exploit-db.com/exploits/37623/ | exploitx_refsource_EXPLOIT-DBThird Party AdvisoryVDB Entry | |
| https://www.isc.org/software/dhcp/advisories/cve-2011-0997 | x_refsource_CONFIRMPatchVendor Advisory |
Change history (0)
No recorded changes yet.
Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Apr 8, 2011
Updated Aug 6, 2024
Reserved Feb 14, 2011
Link CVE-2011-0997
CISA Vulnrichment
Updated n/a