dnsmasq: DNS cache poisoning from local network may lead to DoS
Published Mar 26, 2005
7.5
HIGHCVSS 3.1
EPSS 1.87%
Description
Dnsmasq before 2.21 allows remote attackers to poison the DNS cache via answers to queries that were not made by Dnsmasq.
Affected products
No data.
- < 2.21
No data.
Red Hat Enterprise Linux 6
dnsmasq
Not affected
Red Hat Enterprise Linux 7
dnsmasq
Not affected
Red Hat Enterprise Linux 8
dnsmasq
Not affected
Red Hat Enterprise Linux 9
dnsmasq
Not affected
Red Hat OpenStack Platform 10 (Newton)
dnsmasq
Not affected
Red Hat OpenStack Platform 13 (Queens)
dnsmasq
Not affected
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 6 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 7 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 8 | dnsmasq | Not affected | n/a |
| Red Hat Enterprise Linux 9 | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 10 (Newton) | dnsmasq | Not affected | n/a |
| Red Hat OpenStack Platform 13 (Queens) | dnsmasq | Not affected | n/a |
No package ranges for this CVE.
Remediation
Red Hat statement
RHOSP deployments are not affected because they pull dnsmasq directly from the rhel-7-server channel. A RHOSP dnsmasq update will therefore not be provided at this time. All RHEL versions are not affected because they have the updated/fixed dnsmasq.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
1 other source (Red Hat) ▾
CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
No CVSS v3.0 score for this CVE.
AV:N/AC:L/Au:N/C:N/I:P/A:N
This CVE is not in the KEV list.
No CISA SSVC assessment for this CVE yet.
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
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 (12 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 1.87% (0.01874) | 78.63th | v5 (v2026.06.15) |
| Jun 15, 2026 | 1.87% (0.01874) | 76.59th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.14% (0.00139) | 31.27th | v4 (v2025.03.14) |
| Dec 12, 2024 | 0.28% (0.00278) | 69.12th | v3 (v2023.03.01) |
| Mar 2, 2024 | 0.28% (0.00278) | 67.52th | v3 (v2023.03.01) |
| Feb 9, 2024 | 0.30% (0.00300) | 68.69th | v3 (v2023.03.01) |
| Feb 8, 2024 | 0.71% (0.00713) | 79.87th | v3 (v2023.03.01) |
| Mar 7, 2023 | 0.71% (0.00713) | 77.42th | v3 (v2023.03.01) |
| Mar 6, 2023 | 1.21% (0.01213) | 66.61th | v2 (v2022.01.01) |
| Feb 17, 2023 | 1.21% (0.01213) | 66.22th | v2 (v2022.01.01) |
| Apr 1, 2022 | 1.21% (0.01213) | 64.21th | v2 (v2022.01.01) |
| Feb 4, 2022 | 1.21% (0.01213) | 40.54th | v2 (v2022.01.01) |
References (8)
- http://secunia.com/advisories/14691 third-party-advisoryx_refsource_SECUNIABroken LinkPatchVendor Advisory
- http://www.securityfocus.com/bid/12897 vdb-entryx_refsource_BIDBroken LinkPatchThird Party AdvisoryVDB Entry
- http://www.thekelleys.org.uk/dnsmasq/CHANGELOG x_refsource_CONFIRMRelease Notes
- https://access.redhat.com/security/cve/CVE-2005-0877 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=2011237 Issue Tracking
- https://exchange.xforce.ibmcloud.com/vulnerabilities/19826 vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry
- https://nvd.nist.gov/vuln/detail/CVE-2005-0877
- https://www.cve.org/CVERecord?id=CVE-2005-0877
| Link | Providers | Tags |
|---|---|---|
| http://secunia.com/advisories/14691 | third-party-advisoryx_refsource_SECUNIABroken LinkPatchVendor Advisory | |
| http://www.securityfocus.com/bid/12897 | vdb-entryx_refsource_BIDBroken LinkPatchThird Party AdvisoryVDB Entry | |
| http://www.thekelleys.org.uk/dnsmasq/CHANGELOG | x_refsource_CONFIRMRelease Notes | |
| https://access.redhat.com/security/cve/CVE-2005-0877 | Vendor Advisory | |
| https://bugzilla.redhat.com/show_bug.cgi?id=2011237 | Issue Tracking | |
| https://exchange.xforce.ibmcloud.com/vulnerabilities/19826 | vdb-entryx_refsource_XFThird Party AdvisoryVDB Entry | |
| https://nvd.nist.gov/vuln/detail/CVE-2005-0877 | ||
| https://www.cve.org/CVERecord?id=CVE-2005-0877 |
Change history (0)
No recorded changes yet.