dnsmasq: unchecked return value of the setup_reply() function
Published May 8, 2015
6.4
MEDIUMCVSS 2.0
EPSS 4.42%
Description
The tcp_request function in Dnsmasq before 2.73rc4 does not properly handle the return value of the setup_reply function, which allows remote attackers to read process memory and cause a denial of service (out-of-bounds read and crash) via a malformed DNS request.
Affected products
No data.
Configuration 1
- ≤ 2.73
No data.
Red Hat Enterprise Linux 5
dnsmasq
Will not fix
Red Hat Enterprise Linux 6
dnsmasq
Will not fix
Red Hat Enterprise Linux 7
dnsmasq
Will not fix
Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse)
dnsmasq
Will not fix
Red Hat Enterprise Linux OpenStack Platform 6 (Juno)
dnsmasq
Will not fix
Red Hat OpenStack Platform 4
dnsmasq
Will not fix
| Product | Package | State | Advisory |
|---|---|---|---|
| Red Hat Enterprise Linux 5 | dnsmasq | Will not fix | n/a |
| Red Hat Enterprise Linux 6 | dnsmasq | Will not fix | n/a |
| Red Hat Enterprise Linux 7 | dnsmasq | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 5 (Icehouse) | dnsmasq | Will not fix | n/a |
| Red Hat Enterprise Linux OpenStack Platform 6 (Juno) | dnsmasq | Will not fix | n/a |
| Red Hat OpenStack Platform 4 | dnsmasq | Will not fix | n/a |
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.
AV:N/AC:L/Au:N/C:P/I:N/A:P
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 (9 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 4.42% (0.04425) | 91.05th | v5 (v2026.06.15) |
| Jun 15, 2026 | 4.46% (0.04456) | 90.16th | v5 (v2026.06.15) |
| Mar 17, 2025 | 0.18% (0.00184) | 37.91th | v4 (v2025.03.14) |
| Dec 12, 2024 | 1.74% (0.01743) | 88.43th | v3 (v2023.03.01) |
| Nov 8, 2023 | 1.74% (0.01743) | 86.47th | v3 (v2023.03.01) |
| Mar 7, 2023 | 1.62% (0.01623) | 85.48th | v3 (v2023.03.01) |
| Mar 6, 2023 | 2.17% (0.02172) | 80.77th | v2 (v2022.01.01) |
| Apr 1, 2022 | 2.17% (0.02172) | 78.91th | v2 (v2022.01.01) |
| Feb 4, 2022 | 2.17% (0.02172) | 57.73th | v2 (v2022.01.01) |
References (16)
- http://lists.opensuse.org/opensuse-updates/2015-05/msg00013.html vendor-advisoryx_refsource_SUSE
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q2/009382.html mailing-listx_refsource_MLISTExploit
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2015q2/009387.html mailing-listx_refsource_MLISTThird Party Advisory
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commitdiff%3Bh=ad4a8ff7d9097008d7623df8543df435bfddeac8 x_refsource_CONFIRM
- http://www.debian.org/security/2015/dsa-3251 vendor-advisoryx_refsource_DEBIANVendor Advisory
- http://www.oracle.com/technetwork/topics/security/bulletinjul2015-2511963.html x_refsource_CONFIRMThird Party Advisory
- http://www.securityfocus.com/archive/1/535354/100/1100/threaded mailing-listx_refsource_BUGTRAQ
- http://www.securityfocus.com/bid/74452 vdb-entryx_refsource_BID
- http://www.securitytracker.com/id/1032195 vdb-entryx_refsource_SECTRACK
- http://www.ubuntu.com/usn/USN-2593-1 vendor-advisoryx_refsource_UBUNTUVendor Advisory
- https://access.redhat.com/security/cve/CVE-2015-3294 Vendor Advisory
- https://bugzilla.redhat.com/show_bug.cgi?id=1215747 Issue Tracking
- https://nvd.nist.gov/vuln/detail/CVE-2015-3294
- https://security.gentoo.org/glsa/201512-01 vendor-advisoryx_refsource_GENTOO
- https://www.cve.org/CVERecord?id=CVE-2015-3294
- https://www.obrela.com/home/security-labs/advisories/osi-advisory-osi-1502/
Change history (0)
No recorded changes yet.