Input validation error in Dnsmasq - CVE-2015-8899
Published: June 30, 2016 / Updated: July 28, 2020
Vulnerability identifier: #VU32274
CSH Severity: Medium
CVSS v4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2015-8899
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote non-authenticated attacker to perform a denial of service (DoS) attack.
Dnsmasq before 2.76 allows remote servers to cause a denial of service (crash) via a reply with an empty DNS address that has an (1) A or (2) AAAA record defined locally.
Affected software
Dnsmasq
dnsmasq (Alpine package)
dnsmasq
SUSE Linux
Fedora
Opensuse
dnsmasq (Alpine package)
dnsmasq
SUSE Linux
Fedora
Opensuse
How to mitigate CVE-2015-8899
Install update from vendor's website.
Dnsmasq - update to 2.76
dnsmasq (Alpine package) - update to 2.76-r0
dnsmasq - addressed in versions 2.76-1.fc23, 2.76-1.fc24
dnsmasq (Alpine package) - update to 2.76-r0
dnsmasq - addressed in versions 2.76-1.fc23, 2.76-1.fc24
External References
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010479.html
- http://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2016q2/010505.html
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=41a8d9e99be9f2cc8b02051dd322cb45e0faac87
- http://www.openwall.com/lists/oss-security/2016/06/03/7
- http://www.openwall.com/lists/oss-security/2016/06/04/2
- http://www.securityfocus.com/bid/91031
- http://www.securitytracker.com/id/1036045
- http://www.ubuntu.com/usn/USN-3009-1
Related Security Bulletins
- Input validation error in GNU Dnsmasq
- OpenSUSE Linux update for dnsmasq
- SUSE Linux update for dnsmasq
- SUSE Linux update for dnsmasq
- Input validation error in dnsmasq (Alpine package)
- SUSE Linux update for dnsmasq
- SUSE Linux update for dnsmasq
- SUSE Linux update for dnsmasq
- Fedora 24 update for dnsmasq
- Fedora 23 update for dnsmasq