CVE-2011-1910

CVE-2011-1910 is a medium-severity vulnerability in Isc Bind with a CVSS 2.0 base score of 5.0. Its EPSS exploit-prediction score of 25% places it in the 98th percentile, indicating an elevated likelihood of exploitation. The underlying weakness is classified as CWE-189.

Key facts

• Severity: Medium (CVSS 2.0 base score 5.0)
• EPSS exploit prediction: 25% (98th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-189
• Affected product: Isc Bind
• Published: 2011-05-31
• Last modified: 2026-06-16

Description

Off-by-one error in named in ISC BIND 9.x before 9.7.3-P1, 9.8.x before 9.8.0-P2, 9.4-ESV before 9.4-ESV-R4-P1, and 9.6-ESV before 9.6-ESV-R4-P1 allows remote DNS servers to cause a denial of service (assertion failure and daemon exit) via a negative response containing large RRSIG RRsets.

Frequently asked questions

What is CVE-2011-1910?

Off-by-one error in named in ISC BIND 9.x before 9.7.3-P1, 9.8.x before 9.8.0-P2, 9.4-ESV before 9.4-ESV-R4-P1, and 9.6-ESV before 9.6-ESV-R4-P1 allows remote DNS servers to cause a denial of service (assertion failure and daemon exit) via a negative response containing large RRSIG RRsets.

How severe is CVE-2011-1910?

CVE-2011-1910 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-2011-1910 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 25% (98th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2011-1910?

CVE-2011-1910 primarily affects Isc Bind. In total, 238 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2011-1910?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2011-1910 published?

CVE-2011-1910 was published on 2011-05-31 and last updated on 2026-06-16.

References

• http://lists.apple.com/archives/Security-announce/2011//Oct/msg00003.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061082.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061401.html
• http://lists.fedoraproject.org/pipermail/package-announce/2011-June/061405.html
• http://marc.info/?l=bugtraq&m=142180687100892&w=2
• http://osvdb.org/72540
• http://secunia.com/advisories/44677
• http://secunia.com/advisories/44719
• http://secunia.com/advisories/44741
• http://secunia.com/advisories/44744
• http://secunia.com/advisories/44758
• http://secunia.com/advisories/44762
• http://secunia.com/advisories/44783
• http://secunia.com/advisories/44929
• http://security.freebsd.org/advisories/FreeBSD-SA-11:02.bind.asc
• http://slackware.com/security/viewer.php?l=slackware-security&y=2011&m=slackware-security.685026
• http://support.apple.com/kb/HT5002
• http://www.debian.org/security/2011/dsa-2244
• http://www.kb.cert.org/vuls/id/795694
• http://www.mandriva.com/security/advisories?name=MDVSA-2011:104
• http://www.redhat.com/support/errata/RHSA-2011-0845.html
• http://www.securityfocus.com/bid/48007
• http://www.securitytracker.com/id?1025572
• https://bugzilla.redhat.com/show_bug.cgi?id=708301
• https://hermes.opensuse.org/messages/8699912
• https://www.isc.org/software/bind/advisories/cve-2011-1910

Affected products (238)

• cpe:2.3:a:isc:bind:9.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.0:rc3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.0:rc4:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.0:rc5:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.0:rc6:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.1:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.0.1:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc4:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc5:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc6:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.1:rc7:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.2:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.3:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.3:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.3:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.1.3:rc3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:*:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:a1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:a2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:a3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:b1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:b2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc1:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc10:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc2:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc3:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc4:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc5:*:*:*:*:*:*
• cpe:2.3:a:isc:bind:9.2.0:rc6:*:*:*:*:*:*

More vulnerabilities in Isc Bind

• CVE-2008-0122 — Critical (CVSS 10.0): Off-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…
• CVE-2001-0011 — Critical (CVSS 10.0): Buffer overflow in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
• CVE-2001-0013 — Critical (CVSS 10.0): Format string vulnerability in nslookupComplain function in BIND 4 allows remote attackers to gain root privileges.
• CVE-2001-0010 — Critical (CVSS 10.0): Buffer overflow in transaction signature (TSIG) handling code in BIND 8 allows remote attackers to gain root privileges.
• CVE-2000-1029 — Critical (CVSS 10.0): Buffer overflow in host command allows a remote attacker to execute arbitrary commands via a long response to an AXFR…
• CVE-1999-0837 — Critical (CVSS 10.0): Denial of service in BIND by improperly closing TCP sessions via so_linger.

All CVEs affecting Isc Bind →

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