CVE-2017-13704

mediumpriority · attend · 53EPSS 0.654 · 99 %ileEURUUS
grimoire priorityP1 · Urgent
Exploitable?
—
no known exploitation
Likely / severe?
65.4% (99th) EPSS
CVSS 5 · medium
Is it mine?
37 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · fstec_bdu · cisa_csaf_ot

EPSS · scored 2026-10-27

In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedRUGGEDCOM RM1224cisa_csaf_ot

    Update to V5.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109757544

  • FixedSCALANCE M-800 / S615cisa_csaf_ot

    Update to V5.0 or later version https://support.industry.siemens.com/cs/ww/en/view/109757544

  • FixedSCALANCE W1750Dcisa_csaf_ot

    Update to V6.5.1.5 or later version https://support.industry.siemens.com/cs/ww/en/view/109778052

  • MitigationRUGGEDCOM RM1224cisa_csaf_ot

    SCALANCE M-800 / S615 and RUGGEDCOM RM1224: Disable DNS proxy in the device configuration (System - DNS - DNS Proxy - Disable Checkbox 'Enable DNS Proxy'), and configure the connected devices in the internal network to use a different DNS server

  • MitigationSCALANCE M-800 / S615cisa_csaf_ot

    SCALANCE M-800 / S615 and RUGGEDCOM RM1224: Disable DNS proxy in the device configuration (System - DNS - DNS Proxy - Disable Checkbox 'Enable DNS Proxy'), and configure the connected devices in the internal network to use a different DNS server

  • MitigationSCALANCE W1750Dcisa_csaf_ot

    SCALANCE W1750D: If 'OpenDNS', 'Captive Portal' or 'URL redirection' functionality is not used, deploy firewall rules in the device configuration to block incoming access to port 53/UDP

02

cvss

Technical severity, 0–10. One row per scoring source.

7.5
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 5–7.5

v2.05mediumAV:N/AC:L/Au:N/C:N/I:N/A:Pprimary · NVD / NIST USexploitability 10 · impact 2.9
v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 3.9 · impact 3.6
v3.07.5highCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)
v3.15.3mediumCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:Csecondary · CISA US
v3.17.5highAV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:Hsecondary · FSTEC (BDU) RU
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-20USprimaryCWE-190USCWE-20USCWE-20US
04

affected products (37)

Products and version ranges known to be affected.

showing 20 of 37
05

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-17-332-01Siemens SCALANCE W1750D, M800, S615, and RUGGEDCOM RM1224 (Update C)2017-11-17icsa · cisa_csaf_otUS

    As a general security measure, Siemens strongly recommends to protect network access to devices with appropriate mechanisms. In order to operate the devices in a protected IT environment, Siemens recommends to configure the environment according to Siemens' operational guidelines for Industrial Security (Download: https://www.siemens.com/cert/operational-guidelines-industrial-security), and to follow the recommendations in the product manuals.

06

also known as (5)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdfstec_bducisa_csaf_otNVDCVE.orgMITRE
published 2017-10-03modified 2026-06-17
09

references (58)

External citations — patches, advisories, analysis.

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