VDB-129816 · CVE-2018-5734 · BID 103189

ISC BIND up to 9.10.6-S2 badcache.c Malformed Packet input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.5$5k-$25k0.00

Summaryinfo

A vulnerability categorized as critical has been discovered in ISC BIND up to 9.10.6-S2. Impacted is an unknown function of the file badcache.c. The manipulation as part of Malformed Packet results in input validation. This vulnerability is identified as CVE-2018-5734. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in ISC BIND up to 9.10.6-S2 (Domain Name Software). Affected is an unknown functionality of the file badcache.c. The manipulation as part of a Malformed Packet leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

While handling a particular type of malformed packet BIND erroneously selects a SERVFAIL rcode instead of a FORMERR rcode. If the receiving view has the SERVFAIL cache feature enabled, this can trigger an assertion failure in badcache.c when the request doesn't contain all of the expected information. Affects BIND 9.10.5-S1 to 9.10.5-S4, 9.10.6-S1, 9.10.6-S2.

The bug was discovered 02/28/2018. The weakness was released 01/16/2019 (Website). The advisory is shared for download at kb.isc.org. This vulnerability is traded as CVE-2018-5734 since 01/17/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available. The current price for an exploit might be approx. USD $5k-$25k (estimation calculated on 07/01/2023).

The vulnerability was handled as a non-public zero-day exploit for at least 322 days. During that time the estimated underground price was around $5k-$25k. The commercial vulnerability scanner Qualys is able to test this issue with plugin 15100 (ISC BIND badcache.c Remote Denial of Service Vulnerability (AA-01562)).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at SecurityFocus (BID 103189†). Entry connected to this vulnerability is available at VDB-129818. VulDB is the best source for vulnerability data and more expert information about this specific topic.

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: 7.5

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

NVD Base Score: 7.5
NVD Vector: 🔍

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

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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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Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

01/17/2018 🔍
02/28/2018 +42 days 🔍
02/28/2018 +0 days 🔍
01/16/2019 +322 days 🔍
01/16/2019 +0 days 🔍
01/17/2019 +1 days 🔍
07/01/2023 +1626 days 🔍

Sourcesinfo

Vendor: isc.org

Advisory: kb.isc.org
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-5734 (🔍)
GCVE (CVE): GCVE-0-2018-5734
GCVE (VulDB): GCVE-100-129816
SecurityFocus: 103189 - ISC BIND CVE-2018-5734 Remote Denial of Service Vulnerability
SecurityTracker: 1040438

See also: 🔍

Entryinfo

Created: 01/17/2019 11:47
Updated: 07/01/2023 12:35
Changes: 01/17/2019 11:47 (63), 05/02/2020 09:31 (4), 07/01/2023 12:28 (3), 07/01/2023 12:35 (10)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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