CVE-2017-14493
Dnsmasq < 2.78 - Stack Overflow
Severity Score
Exploit Likelihood
Affected Versions
Public Exploits
3Exploited in Wild
-Decision
Descriptions
Stack-based buffer overflow in dnsmasq before 2.78 allows remote attackers to cause a denial of service (crash) or execute arbitrary code via a crafted DHCPv6 request.
Un desbordamiento de búfer basado en pila en dnsmasq en versiones anteriores a la 2.78 permite a los atacantes provocar una denegación de servicio (cierre inesperado) o ejecutar código arbitrario mediante una petición DHCPv6 manipulada.
A stack buffer overflow was found in dnsmasq in the DHCPv6 code. An attacker on the local network could send a crafted DHCPv6 request to dnsmasq which would cause it to a crash or, potentially, execute arbitrary code.
The dnsmasq packages contain Dnsmasq, a lightweight DNS forwarder and DHCP server. Security Fix: A heap buffer overflow was found in dnsmasq in the code responsible for building DNS replies. An attacker could send crafted DNS packets to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. A heap buffer overflow was discovered in dnsmasq in the IPv6 router advertisement handling code. An attacker on the local network segment could send crafted RAs to dnsmasq which would cause it to crash or, potentially, execute arbitrary code. This issue only affected configurations using one of these options: enable-ra, ra-only, slaac, ra-names, ra-advrouter, or ra-stateless.
CVSS Scores
SSVC
- Decision:-
Timeline
- 2017-09-15 CVE Reserved
- 2017-10-02 CVE Published
- 2017-10-02 First Exploit
- 2024-08-05 CVE Updated
- 2025-03-30 EPSS Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
CWE
- CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
- CWE-121: Stack-based Buffer Overflow
CAPEC
References (24)
| URL | Tag | Source |
|---|---|---|
| http://nvidia.custhelp.com/app/answers/detail/a_id/4561 | Third Party Advisory | |
| http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=3d4ff1ba8419546490b464418223132529514033 | X_refsource_confirm | |
| http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt | X_refsource_confirm | |
| http://www.securityfocus.com/bid/101085 | Third Party Advisory | |
| http://www.securitytracker.com/id/1039474 | Third Party Advisory | |
| https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html | Third Party Advisory | |
| https://www.kb.cert.org/vuls/id/973527 | Third Party Advisory |
|
| https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html | Mailing List | |
| https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html | Mailing List | |
| https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq | Third Party Advisory |
|
| URL | Date | SRC |
|---|---|---|
| https://packetstorm.news/files/id/144473 | 2017-10-02 | |
| https://www.exploit-db.com/exploits/42943 | 2024-08-05 | |
| https://github.com/pupiles/bof-dnsmasq-cve-2017-14493 | 2024-05-13 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/errata/RHSA-2017:2836 | 2023-11-07 | |
| https://access.redhat.com/errata/RHSA-2017:2837 | 2023-11-07 |
| URL | Date | SRC |
|---|---|---|
| http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html | 2023-11-07 | |
| http://thekelleys.org.uk/dnsmasq/CHANGELOG | 2023-11-07 | |
| http://www.debian.org/security/2017/dsa-3989 | 2023-11-07 | |
| http://www.ubuntu.com/usn/USN-3430-1 | 2023-11-07 | |
| http://www.ubuntu.com/usn/USN-3430-2 | 2023-11-07 | |
| https://access.redhat.com/security/vulnerabilities/3199382 | 2017-10-02 | |
| https://security.gentoo.org/glsa/201710-27 | 2023-11-07 | |
| https://access.redhat.com/security/cve/CVE-2017-14493 | 2017-10-02 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1495411 | 2017-10-02 |
Affected Vendors, Products, and Versions
| Vendor | Product | Version | Other | Status | ||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Vendor | Product | Version | Other | Status | <-- --> | Vendor | Product | Version | Other | Status |
| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 14.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "14.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 16.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "16.04" | lts |
Affected
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| Canonical Search vendor "Canonical" | Ubuntu Linux Search vendor "Canonical" for product "Ubuntu Linux" | 17.04 Search vendor "Canonical" for product "Ubuntu Linux" and version "17.04" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.0 Search vendor "Debian" for product "Debian Linux" and version "7.0" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 7.1 Search vendor "Debian" for product "Debian Linux" and version "7.1" | - |
Affected
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| Debian Search vendor "Debian" | Debian Linux Search vendor "Debian" for product "Debian Linux" | 9.0 Search vendor "Debian" for product "Debian Linux" and version "9.0" | - |
Affected
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| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 42.2 Search vendor "Opensuse" for product "Leap" and version "42.2" | - |
Affected
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| Opensuse Search vendor "Opensuse" | Leap Search vendor "Opensuse" for product "Leap" | 42.3 Search vendor "Opensuse" for product "Leap" and version "42.3" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Desktop Search vendor "Redhat" for product "Enterprise Linux Desktop" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Desktop" and version "7.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Server Search vendor "Redhat" for product "Enterprise Linux Server" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Server" and version "7.0" | - |
Affected
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| Redhat Search vendor "Redhat" | Enterprise Linux Workstation Search vendor "Redhat" for product "Enterprise Linux Workstation" | 7.0 Search vendor "Redhat" for product "Enterprise Linux Workstation" and version "7.0" | - |
Affected
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| Thekelleys Search vendor "Thekelleys" | Dnsmasq Search vendor "Thekelleys" for product "Dnsmasq" | <= 2.77 Search vendor "Thekelleys" for product "Dnsmasq" and version " <= 2.77" | - |
Affected
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