Integer Overflow or Wraparound Affecting dnsmasq package, versions <0:2.76-2.el7_4.2
Threat Intelligence
Snyk has a published code exploit for this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-RHEL7-DNSMASQ-1474589
- published26 Jul 2021
- disclosed2 Oct 2017
Introduced: 2 Oct 2017
CVE-2017-14496 (opens in a new tab)How to fix?
Upgrade RHEL:7 dnsmasq to version 0:2.76-2.el7_4.2 or higher.
This issue was patched in RHSA-2017:2836.
NVD Description
Note: Versions mentioned in the description apply only to the upstream dnsmasq package and not the dnsmasq package as distributed by RHEL.
See How to fix? for RHEL:7 relevant fixed versions and status.
Integer underflow in the add_pseudoheader function in dnsmasq before 2.78 , when the --add-mac, --add-cpe-id or --add-subnet option is specified, allows remote attackers to cause a denial of service via a crafted DNS request.
References
- http://www.securityfocus.com/bid/101085
- http://www.securityfocus.com/bid/101977
- https://www.kb.cert.org/vuls/id/973527
- http://nvidia.custhelp.com/app/answers/detail/a_id/4561
- https://access.redhat.com/security/vulnerabilities/3199382
- https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf
- https://source.android.com/security/bulletin/2017-10-01
- https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq
- http://thekelleys.org.uk/dnsmasq/CHANGELOG
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git;a=commit;h=897c113fda0886a28a986cc6ba17bb93bd6cb1c7
- http://www.arubanetworks.com/assets/alert/ARUBA-PSA-2017-005.txt
- https://access.redhat.com/security/cve/CVE-2017-14496
- http://www.debian.org/security/2017/dsa-3989
- https://www.exploit-db.com/exploits/42946/
- https://security.gentoo.org/glsa/201710-27
- https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html
- https://www.mail-archive.com/dnsmasq-discuss@lists.thekelleys.org.uk/msg11664.html
- https://www.mail-archive.com/dnsmasq-discuss@lists.thekelleys.org.uk/msg11665.html
- https://access.redhat.com/errata/RHSA-2017:2836
- http://www.securitytracker.com/id/1039474
- http://lists.opensuse.org/opensuse-security-announce/2017-10/msg00006.html
- http://www.ubuntu.com/usn/USN-3430-1
- http://www.ubuntu.com/usn/USN-3430-2
- http://thekelleys.org.uk/gitweb/?p=dnsmasq.git%3Ba=commit%3Bh=897c113fda0886a28a986cc6ba17bb93bd6cb1c7
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html
- https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html
- https://www.exploit-db.com/exploits/42946