PT-2017-13488 · Simon Kelley+5 · Dnsmasq+5

Felix Wilhelm + 4 · Published 2017-10-02 · Updated 2024-06-15 · CVE-2017-14495

Positive Technologies (AI Summary)

CVSS v3.1

7.5

High

Base vector

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Name of the Vulnerable Software and Affected Versions dnsmasq versions prior to 2.78

Description The issue is related to a memory leak that can be triggered when specific options such as --add-mac, --add-cpe-id, or --add-subnet are used. This allows remote attackers to cause a denial of service by consuming memory through vectors involving DNS response creation.

Recommendations For dnsmasq versions prior to 2.78, update to version 2.78 or later to resolve the issue. As a temporary workaround, consider avoiding the use of the --add-mac, --add-cpe-id, and --add-subnet options until the update is applied.

Exploit

Fix

DoS

Missing Release of Resource after Effective Lifetime

Weakness Enumeration

CWE-772

Related Identifiers

ALT-PU-2017-2387

CESA-2017_2836

CESA-2017_2838

CVE-2017-14495

DSA-3989-1

ELSA-2017-2836

MGASA-2017-0364

MGASA-2017-0367

OPENSUSE-SU-2017_2633-1

OPENSUSE-SU-2024:10721-1

RHSA-2017:2836

RHSA-2017_2836

RHSA-2017_2838

RHSA-2017_2840

SUSE-SU-2017:2616-1

SUSE-SU-2017:2617-1

SUSE-SU-2017:2618-1

SUSE-SU-2017:2619-1

USN-3430-1

USN-3430-2

Affected Products

Alt Linux

Centos

Red Hat

Suse

Ubuntu

Dnsmasq

References · 93

• 🔥 https://github.com/google/security-research-pocs/blob/master/vulnerabilities/dnsmasq/CVE-2017-14495.py · Exploit
• 🔥 https://github.com/google/security-research-pocs/blob/master/vulnerabilities/dnsmasq/CVE-2017-14493.py · Exploit
• 🔥 https://github.com/google/security-research-pocs/blob/master/vulnerabilities/dnsmasq/CVE-2017-14494.py · Exploit
• 🔥 https://github.com/google/security-research-pocs/blob/master/vulnerabilities/dnsmasq/CVE-2017-14492.py · Exploit
• 🔥 https://github.com/google/security-research-pocs/blob/master/vulnerabilities/dnsmasq/CVE-2017-14496.py · Exploit
• 🔥 https://github.com/google/security-research-pocs/blob/master/vulnerabilities/dnsmasq/CVE-2017-14491.py · Exploit
• 🔥 https://github.com/pupiles/bof-dnsmasq-cve-2017-14493 · Exploit
• 🔥 https://exploit-db.com/exploits/42945 · Exploit
• https://ubuntu.com/security/CVE-2017-14494 · Vendor Advisory
• https://advisories.mageia.org/MGASA-2017-0367.html · Security Note
• https://ubuntu.com/security/CVE-2017-14493 · Vendor Advisory
• https://ubuntu.com/security/CVE-2017-14492 · Vendor Advisory
• http://ubuntu.com/usn/USN-3430-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3430-1 · Vendor Advisory
• https://ubuntu.com/security/notices/USN-3430-2 · Vendor Advisory