Ubuntu update for squid3



Published: 2024-07-01
Risk Medium
Patch available YES
Number of vulnerabilities 6
CVE-ID CVE-2021-28651
CVE-2022-41318
CVE-2023-49285
CVE-2023-49286
CVE-2023-50269
CVE-2024-25617
CWE-ID CWE-20
CWE-125
CWE-252
CWE-674
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Ubuntu
Operating systems & Components / Operating system

squid3 (Ubuntu package)
Operating systems & Components / Operating system package or component

squid (Ubuntu package)
Operating systems & Components / Operating system package or component

Vendor Canonical Ltd.

Security Bulletin

This security bulletin contains information about 6 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU53017

Risk: Medium

CVSSv3.1: 6.4 [CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-28651

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient input validation when resolving "urn:" resource identifiers. A remote attacker can trick a user behind the proxy server to click on a specially crafted "urn:" link that leads to a server under attacker's control and force Squid to consume arbitrarily large amounts of memory on the server. 

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6857-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Out-of-bounds read

EUVDB-ID: #VU67609

Risk: Medium

CVSSv3.1: 5.7 [CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2022-41318

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information or crash the server.

The vulnerability exists due to a boundary condition within SSPI and SMB authentication helpers. A remote attacker can trigger an out-of-bounds read error and read contents of memory on the system or crash the server.

Successful exploitation of the vulnerability requires that Squid is configured to use NTLM or Negotiate authentication with one of the vulnerable helpers.

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6857-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

3) Out-of-bounds read

EUVDB-ID: #VU83629

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49285

CWE-ID: CWE-125 - Out-of-bounds read

Exploit availability: No

Description

The vulnerability allows a remote attacker perform a denial of service (DoS) attack.

The vulnerability exists due to a boundary condition when handling HTTP messages. A remote attacker can send specially crafted data to the server, trigger an out-of-bounds read error and crash the proxy server.

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6857-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

4) Unchecked Return Value

EUVDB-ID: #VU83628

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-49286

CWE-ID: CWE-252 - Unchecked Return Value

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to incorrect check of function return value in Helper process management. A remote attacker can pass specially crafted data to the proxy server and perform a denial of service (DoS) attack.

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6857-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

5) Uncontrolled Recursion

EUVDB-ID: #VU84442

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-50269

CWE-ID: CWE-674 - Uncontrolled Recursion

Exploit availability: No

Description

The vulnerability allows a remote client to perform a denial of service (DoS) attack.

The vulnerability exists due to uncontrolled recursion when parsing HTTP requests. A remote client can send a specially crafted HTTP request with the a large X-Forwarded-For header, when the follow_x_forwarded_for feature is configured, and perform a denial of service (DoS) attack.

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6857-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

6) Input validation error

EUVDB-ID: #VU86547

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2024-25617

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient validation of HTTP headers. A remote attacker can send a specially crafted HTTP request to the server and perform a denial of service (DoS) attack.

Successful exploitation of the vulnerability requires that the request_header_max_size or reply_header_max_size settings are
unchanged from the default.

Mitigation

Update the affected package squid3 to the latest version.

Vulnerable software versions

Ubuntu: 16.04 - 18.04

squid3 (Ubuntu package): before Ubuntu Pro

squid (Ubuntu package): before Ubuntu Pro (Infra-only)

External links

http://ubuntu.com/security/notices/USN-6857-1


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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