Squid Web Proxy up to 5.6 SSPI/SMB integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability was found in Squid Web Proxy up to 5.6. It has been rated as problematic. The affected element is an unknown function of the component SSPI/SMB. Performing a manipulation results in integer overflow. This vulnerability was named CVE-2022-41318. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as problematic has been found in Squid Web Proxy up to 5.6 (Firewall Software). This affects an unknown function of the component SSPI/SMB. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality. The summary by CVE is:

A buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB authentication helpers are vulnerable to reading unintended memory locations. In some configurations, cleartext credentials from these locations are sent to a client. This is fixed in 5.7.

The weakness was presented 12/26/2022 as GHSA-394c-rr7q-6g78. It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2022-41318 since 09/23/2022. The technical details are unknown and an exploit is not publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 236616 (Alibaba Cloud Linux 3 : 0166: squid:4 (ALINUX3-SA-2022:0166)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 5.7 eliminates this vulnerability. Applying a patch is able to eliminate this problem. The bugfix is ready for download at squid-cache.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at Tenable (236616). Be aware that VulDB is the high quality source for 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: 6.4
VulDB Meta Temp Score: 6.3

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.6
NVD Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
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: 236616
Nessus Name: Alibaba Cloud Linux 3 : 0166: squid:4 (ALINUX3-SA-2022:0166)

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Web Proxy 5.7
Patch: squid-cache.org

Timelineinfo

09/23/2022 🔍
12/26/2022 +94 days 🔍
12/26/2022 +0 days 🔍
05/20/2025 +876 days 🔍

Sourcesinfo

Vendor: squid-cache.org

Advisory: GHSA-394c-rr7q-6g78
Status: Confirmed

CVE: CVE-2022-41318 (🔍)
GCVE (CVE): GCVE-0-2022-41318
GCVE (VulDB): GCVE-100-216783

Entryinfo

Created: 12/26/2022 07:54
Updated: 05/20/2025 06:55
Changes: 12/26/2022 07:54 (42), 01/24/2023 12:02 (11), 04/15/2025 01:34 (20), 05/20/2025 06:55 (2)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

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