Squid Web Proxy up to 4.7 privileges management

Summaryinfo

A vulnerability described as critical has been identified in Squid Web Proxy up to 4.7. This impacts an unknown function. The manipulation results in privileges management. This vulnerability is known as CVE-2019-12522. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability was found in Squid Web Proxy up to 4.7 (Firewall Software). It has been classified as critical. Affected is an unknown code block. The manipulation with an unknown input leads to a privileges management vulnerability. CWE is classifying the issue as CWE-269. The product does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in Squid through 4.7. When Squid is run as root, it spawns its child processes as a lesser user, by default the user nobody. This is done via the leave_suid call. leave_suid leaves the Saved UID as 0. This makes it trivial for an attacker who has compromised the child process to escalate their privileges back to root.

The weakness was published 04/15/2020. This vulnerability is traded as CVE-2019-12522 since 06/02/2019. The exploitability is told to be difficult. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 04/16/2020). This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

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

Similar entries are available at VDB-153691, VDB-153689, VDB-153688 and VDB-153687. If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Firewall Software

Vendor

• Squid

Name

• Web Proxy

Version

• 4.0
• 4.1
• 4.2
• 4.3
• 4.4
• 4.5
• 4.6
• 4.7

License

• open-source

Website

• Vendor: http://www.squid-cache.org/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

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• 🔍
• 🔍

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Entryinfo

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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