HAProxy up to 1.8.14 dns.c dns_validate_dns_response DNS Response out-of-bounds

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 HAProxy up to 1.8.14. Affected by this issue is the function dns_validate_dns_response of the file dns.c. The manipulation as part of DNS Response results in out-of-bounds. This vulnerability is known as CVE-2018-20102. It is possible to launch the attack remotely. No exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in HAProxy up to 1.8.14 (Firewall Software). Affected is the function dns_validate_dns_response of the file dns.c. The manipulation as part of a DNS Response leads to a out-of-bounds vulnerability. CWE is classifying the issue as CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An out-of-bounds read in dns_validate_dns_response in dns.c was discovered in HAProxy through 1.8.14. Due to a missing check when validating DNS responses, remote attackers might be able read the 16 bytes corresponding to an AAAA record from the non-initialized part of the buffer, possibly accessing anything that was left on the stack, or even past the end of the 8193-byte buffer, depending on the value of accepted_payload_size.

The bug was discovered 12/12/2018. The weakness was published 12/12/2018 (Website). The advisory is shared for download at git.haproxy.org. This vulnerability is traded as CVE-2018-20102 since 12/12/2018. 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 vulnerability scanner Nessus provides a plugin with the ID 121153 (openSUSE Security Update : haproxy (openSUSE-2019-44)), which helps to determine the existence of the flaw in a target environment. It is assigned to the family SuSE Local Security Checks and running in the context l. The commercial vulnerability scanner Qualys is able to test this issue with plugin 197342 (Ubuntu Security Notification for Haproxy Vulnerabilities (USN-3858-1)).

Upgrading eliminates this vulnerability. A possible mitigation has been published 4 months after the disclosure of the vulnerability.

The vulnerability is also documented in the databases at Tenable (121153) and SecurityFocus (BID 106223†). Similar entries are available at VDB-127921 and VDB-131951. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

Name

Version

License

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: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / 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: 121153
Nessus Name: openSUSE Security Update : haproxy (openSUSE-2019-44)
Nessus File: 🔍
Nessus Risk: 🔍
Nessus Family: 🔍
Nessus Context: 🔍

Qualys ID: 🔍
Qualys Name: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Patch: efbbdf72992cd20458259962346044cafd9331c0

Timelineinfo

12/12/2018 🔍
12/12/2018 +0 days 🔍
12/12/2018 +0 days 🔍
12/12/2018 +0 days 🔍
12/12/2018 +0 days 🔍
12/13/2018 +1 days 🔍
01/14/2019 +32 days 🔍
03/23/2019 +68 days 🔍
06/18/2023 +1548 days 🔍

Sourcesinfo

Advisory: RHSA-2019:1436
Status: Confirmed

CVE: CVE-2018-20102 (🔍)
GCVE (CVE): GCVE-0-2018-20102
GCVE (VulDB): GCVE-100-127920
SecurityFocus: 106223 - HAProxy CVE-2018-20102 Out-of-Bounds Read Memory Corruption Vulnerability

See also: 🔍

Entryinfo

Created: 12/13/2018 10:06
Updated: 06/18/2023 16:14
Changes: 12/13/2018 10:06 (74), 04/20/2020 16:48 (5), 06/18/2023 16:14 (6)
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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