Fedora 39 update for squid



Published: 2023-12-20
Risk Medium
Patch available YES
Number of vulnerabilities 7
CVE-ID CVE-2023-46724
CVE-2023-46728
CVE-2023-49288
CVE-2023-49286
CVE-2023-49285
CVE-2023-50269
CWE-ID CWE-295
CWE-120
CWE-476
CWE-416
CWE-252
CWE-125
CWE-674
Exploitation vector Network
Public exploit N/A
Vulnerable software
Subscribe 		Fedora
Operating systems & Components / Operating system

squid
Operating systems & Components / Operating system package or component

Vendor Fedoraproject

Security Bulletin

This security bulletin contains information about 7 vulnerabilities.

1) Improper Certificate Validation

EUVDB-ID: #VU82906

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-2023-46724

CWE-ID: CWE-295 - Improper Certificate Validation

Exploit availability: No

Description

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

The vulnerability exists due to improper input validation when processing a specially crafted SSL Certificate in a server certificate chain. A remote attacker can initiate a TLS Handshake with a specially crafted SSL certificate and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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) Buffer overflow

EUVDB-ID: #VU80476

Risk: Medium

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

CVE-ID: CVE-2023-46724

CWE-ID: CWE-120 - Buffer overflow

Exploit availability: No

Description

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

The vulnerability exists due to a boundary error when handling gopher responses. A remote attacker can trick the victim into connecting to a malicious gopher server, trigger a buffer overflow and crash the proxy server.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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) NULL pointer dereference

EUVDB-ID: #VU83379

Risk: Medium

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

CVE-ID: CVE-2023-46728

CWE-ID: CWE-476 - NULL Pointer Dereference

Exploit availability: No

Description

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

The vulnerability exists due to a NULL pointer dereference error in Gopher gateway. A remote attacker can pass specially crafted data to the server and perform a denial of service (DoS) attack.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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) Use-after-free

EUVDB-ID: #VU83627

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-2023-49288

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

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

The vulnerability exists due to a use-after-free error in HTTP collapsed forwarding. A remote attacker can send specially crafted data to the server and crash the proxy server.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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) 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

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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) 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

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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.

7) 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

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 39

squid: before 6.6-1.fc39

External links

http://bodhi.fedoraproject.org/updates/FEDORA-2023-ab77331a34


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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