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Vulnerability record · CVE-2012-3817 · published 25 July 2012

CVE-2012-3817: Isc bind improper input validation vulnerability

Isc · Bind

ISC BIND 9.4.x, 9.5.x, 9.6.x, and 9.7.x before 9.7.6-P2; 9.8.x before 9.8.3-P2; 9.9.x before 9.9.1-P2; and 9.6-ESV before 9.6-ESV-R7-P2, when DNSSEC validation is enabled, does not properly initialize the failing-query cache, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) by sending many queries.

7.8 CVSS 2.0 High EPSS 24% · top 2.3% CWE-20 · Improper input validation
7.8CVSS 2.0 base score
24%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
24References
16 Jun 2026Last modified by NVD

Description

ISC BIND 9.4.x, 9.5.x, 9.6.x, and 9.7.x before 9.7.6-P2; 9.8.x before 9.8.3-P2; 9.9.x before 9.9.1-P2; and 9.6-ESV before 9.6-ESV-R7-P2, when DNSSEC validation is enabled, does not properly initialize the failing-query cache, which allows remote attackers to cause a denial of service (assertion failure and daemon exit) by sending many queries.

AV:N/AC:L/Au:N/C:N/I:N/A:C

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00013.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00015.html
http://rhn.redhat.com/errata/RHSA-2012-1122.html
http://rhn.redhat.com/errata/RHSA-2012-1123.html
http://secunia.com/advisories/51096
http://support.apple.com/kb/HT5880
http://www.debian.org/security/2012/dsa-2517
http://www.securitytracker.com/id?1027296
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004
http://www.ubuntu.com/usn/USN-1518-1
https://kb.isc.org/article/AA-00729 Vendor Advisory
http://lists.apple.com/archives/security-announce/2013/Sep/msg00002.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00013.html
http://lists.opensuse.org/opensuse-updates/2012-08/msg00015.html
http://rhn.redhat.com/errata/RHSA-2012-1122.html
http://rhn.redhat.com/errata/RHSA-2012-1123.html
http://secunia.com/advisories/51096
http://support.apple.com/kb/HT5880
http://www.debian.org/security/2012/dsa-2517
http://www.securitytracker.com/id?1027296
http://www.slackware.com/security/viewer.php?l=slackware-security&y=2012&m=slackware-security.536004
http://www.ubuntu.com/usn/USN-1518-1
https://kb.isc.org/article/AA-00729 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2008-0122Isc bind vulnerabilityOff-by-one error in the inet_network function in libbind in ISC BIND 9.4.2 and earlier, as used in libc in FreeBSD 6.2 through 7.0-PRERELEASE, allows…EPSS 12%10.0CVE-2001-0010Isc bind vulnerabilityBuffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.EPSS 32%10.0CVE-2001-0011Isc bind vulnerabilityBuffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.EPSS 7.7%10.0CVE-2001-0013Isc bind vulnerabilityFormat string vulnerability in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.EPSS 11%10.0CVE-2000-1029Isc bind vulnerabilityBuffer overflow in host command allows a remote attacker to execute arbitrary commands via a long response to an AXFR query.EPSS 14%10.0CVE-1999-0837Isc bind vulnerabilityDenial of service in BIND by improperly closing TCP sessions via so_linger.EPSS 2.7%10.0CVE-1999-0009Data general dg ux vulnerabilityInverse query buffer overflow in BIND 4.9 and BIND 8 Releases.EPSS 29%9.8CVE-2026-3593Isc bind use after free vulnerabilityA use-after-free vulnerability exists within the DNS-over-HTTPS implementation. This issue affects BIND 9 versions 9.20.0 through 9.20.22, 9.21.0 thr…EPSS 1.1%

Source: NIST National Vulnerability Database (record CVE-2012-3817), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.