ISC BIND up to 9.16.41/9.16.41-S1/9.18.15/9.18.15-S1 Recursive-clients Quota stack-based overflow

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.2$0-$5k0.00

Summaryinfo

A vulnerability marked as critical has been reported in ISC BIND up to 9.16.41/9.16.41-S1/9.18.15/9.18.15-S1. Affected by this vulnerability is an unknown functionality of the component Recursive-clients Quota Handler. Performing a manipulation results in stack-based overflow. This vulnerability is cataloged as CVE-2023-2911. It is possible to initiate the attack remotely. There is no exploit available. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in ISC BIND up to 9.16.41/9.16.41-S1/9.18.15/9.18.15-S1 (Domain Name Software). It has been classified as critical. This affects an unknown code of the component Recursive-clients Quota Handler. The manipulation with an unknown input leads to a stack-based overflow vulnerability. CWE is classifying the issue as CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

If the `recursive-clients` quota is reached on a BIND 9 resolver configured with both `stale-answer-enable yes;` and `stale-answer-client-timeout 0;`, a sequence of serve-stale-related lookups could cause `named` to loop and terminate unexpectedly due to a stack overflow. This issue affects BIND 9 versions 9.16.33 through 9.16.41, 9.18.7 through 9.18.15, 9.16.33-S1 through 9.16.41-S1, and 9.18.11-S1 through 9.18.15-S1.

The weakness was shared 06/22/2023. The advisory is shared at kb.isc.org. This vulnerability is uniquely identified as CVE-2023-2911 since 05/26/2023. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 06/22/2023).

Upgrading to version 9.16.42, 9.16.42-S1, 9.18.16 or 9.18.16-S1 eliminates this vulnerability.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.4
VulDB Meta Temp Score: 7.2

VulDB Base Score: 7.3
VulDB Temp Score: 7.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 7.5
CNA Vector (Internet Systems Consortium (ISC)): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Stack-based overflow
CWE: CWE-121 / 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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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: BIND 9.16.42/9.16.42-S1/9.18.16/9.18.16-S1

Timelineinfo

05/26/2023 🔍
06/22/2023 +27 days 🔍
06/22/2023 +0 days 🔍
07/16/2023 +24 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: FEDORA-2023-1d526d551c
Status: Confirmed

CVE: CVE-2023-2911 (🔍)
GCVE (CVE): GCVE-0-2023-2911
GCVE (VulDB): GCVE-100-232089

Entryinfo

Created: 06/22/2023 06:15
Updated: 07/16/2023 15:07
Changes: 06/22/2023 06:15 (51), 07/16/2023 15:07 (1)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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