Squid Web Proxy up to 4.8 Access Check URN Request input validation

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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8.0$0-$5k0.00

Summaryinfo

A vulnerability was found in Squid Web Proxy up to 4.8 and classified as critical. Affected by this vulnerability is an unknown functionality of the component Access Check. The manipulation as part of URN Request results in input validation. This vulnerability was named CVE-2019-12523. The attack may be performed from remote. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Squid Web Proxy up to 4.8 (Firewall Software). Affected is an unknown code of the component Access Check. The manipulation as part of a URN Request 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 confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Squid before 4.9. When handling a URN request, a corresponding HTTP request is made. This HTTP request doesn't go through the access checks that incoming HTTP requests go through. This causes all access checks to be bypassed and allows access to restricted HTTP servers, e.g., an attacker can connect to HTTP servers that only listen on localhost.

The weakness was presented 11/26/2019 (Website). The advisory is shared for download at lists.opensuse.org. This vulnerability is traded as CVE-2019-12523 since 06/02/2019. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

Upgrading to version 4.9 eliminates this vulnerability.

See VDB-146389 for similar entry. Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.2
VulDB Meta Temp Score: 8.0

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

NVD Base Score: 9.1
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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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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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Proxy 4.9

Timelineinfo

06/02/2019 🔍
11/26/2019 +177 days 🔍
11/27/2019 +1 days 🔍
02/28/2024 +1554 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: USN-4213-1
Status: Not defined

CVE: CVE-2019-12523 (🔍)
GCVE (CVE): GCVE-0-2019-12523
GCVE (VulDB): GCVE-100-146388
See also: 🔍

Entryinfo

Created: 11/27/2019 06:50
Updated: 02/28/2024 10:45
Changes: 11/27/2019 06:50 (41), 11/27/2019 06:55 (18), 02/28/2024 10:45 (4)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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