ISC BIND up to 9.9.3 on Unix/Linux Regular Expression memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in ISC BIND on Unix/Linux. Affected by this issue is some unknown functionality of the component Regular Expression Handler. Such manipulation leads to memory corruption. This vulnerability is listed as CVE-2013-2266. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in ISC BIND on Unix/Linux (Domain Name Software). It has been rated as critical. Affected by this issue is some unknown functionality of the component Regular Expression Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is availability. CVE summarizes:

libdns in ISC BIND 9.7.x and 9.8.x before 9.8.4-P2, 9.8.5 before 9.8.5b2, 9.9.x before 9.9.2-P2, and 9.9.3 before 9.9.3b2 on UNIX platforms allows remote attackers to cause a denial of service (memory consumption) via a crafted regular expression, as demonstrated by a memory-exhaustion attack against a machine running a named process.

The weakness was presented 03/26/2013 by Matthew Horsfall with Dyn, Inc. as File 120975/BIN as confirmed advisory (Packetstorm). The advisory is shared for download at packetstormsecurity.com. The public release was coordinated in cooperation with the vendor. This vulnerability is handled as CVE-2013-2266 since 02/21/2013. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 68799 (Oracle Linux 6 : bind (ELSA-2013-0689)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family Oracle Linux Local Security Checks. The commercial vulnerability scanner Qualys is able to test this issue with plugin 350814 (Amazon Linux Security Advisory for bind: AL2012-2015-017).

Upgrading to version 9.9.2-P2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. Furthermore it is possible to detect and prevent this kind of attack with TippingPoint and the filter 12903.

The vulnerability is also documented in the databases at Tenable (68799), SecurityFocus (BID 58736†), OSVDB (91712†), Secunia (SA52782†) and SecurityTracker (ID 1028362†). See VDB-6634, VDB-7079, VDB-7502 and VDB-9764 for similar entries. Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VulDB Base Score: 🔍
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Exploitinginfo

Class: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 68799
Nessus Name: Oracle Linux 6 : bind (ELSA-2013-0689)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Port: 🔍

OpenVAS ID: 892656
OpenVAS Name: Debian Security Advisory DSA 2656-1 (bind9 - denial of service
OpenVAS File: 🔍
OpenVAS Family: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

Interest: 🔍
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Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Upgrade: BIND 9.9.2-P2
TippingPoint: 🔍

McAfee IPS: 🔍
McAfee IPS Version: 🔍

ISS Proventia IPS: 🔍
Fortigate IPS: 🔍

Timelineinfo

02/21/2013 🔍
03/25/2013 +32 days 🔍
03/26/2013 +1 days 🔍
03/26/2013 +0 days 🔍
03/26/2013 +0 days 🔍
03/27/2013 +1 days 🔍
03/27/2013 +0 days 🔍
03/28/2013 +1 days 🔍
03/28/2013 +0 days 🔍
03/28/2013 +0 days 🔍
07/12/2013 +106 days 🔍
05/06/2021 +2855 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: File 120975/BIN
Researcher: Matthew Horsfall
Organization: Dyn, Inc.
Status: Confirmed
Confirmation: 🔍
Coordinated: 🔍

CVE: CVE-2013-2266 (🔍)
GCVE (CVE): GCVE-0-2013-2266
GCVE (VulDB): GCVE-100-8108

OVAL: 🔍
IAVM: 🔍

SecurityFocus: 58736 - ISC BIND 9 'libdns' Remote Denial of Service Vulnerability
Secunia: 52782 - ISC BIND Regular Expression Handling Denial of Service Vulnerability, Moderately Critical
OSVDB: 91712
SecurityTracker: 1028362 - BIND Regex Processing Flaw Lets Remote Users Deny Service
Vulnerability Center: 38935 - ISC BIND Remote Denial of Service in libdns Library due to Improper Handling of Regular Expressions, High

See also: 🔍

Entryinfo

Created: 03/28/2013 15:27
Updated: 05/06/2021 16:19
Changes: 03/28/2013 15:27 (95), 04/26/2017 17:55 (5), 05/06/2021 16:19 (3)
Complete: 🔍
Committer:
Cache ID: 216::103

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