Fedora 26 update for squid



| Updated: 2025-04-24
Risk Medium
Patch available YES
Number of vulnerabilities 3
CVE-ID CVE-2018-1000024
CVE-2018-1000027
CWE-ID CWE-476
CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
 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 3 vulnerabilities.

1) NULL pointer derefenrece

EUVDB-ID: #VU10383

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1000024

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 incorrect pointer handling when processing ESI responses. A remote attacker can supply a specially crafted response to the vulnerable server and trigger application crash.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 26

squid: before 4.0.23-1.fc26

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-4f8a78a5ef


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) Denial of service

EUVDB-ID: #VU10384

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/U:Clear]

CVE-ID: CVE-2018-1000027

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to cause DoS condition on the target system.

The weakness exists due to unspecified error. A remote attacker can cause denial of service issue in HTTP Message processing.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 26

squid: before 4.0.23-1.fc26

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-4f8a78a5ef


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 derefenrece

EUVDB-ID: #VU10164

Risk: Medium

CVSSv4.0: 4.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2018-1000027

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 incorrect pointer handling when processing ESI responses or downloading intermediate CA certificates. A remote attacker can supply a specially crafted response to the vulnerable server and trigger application crash.

Mitigation

Install updates from vendor's repository.

Vulnerable software versions

Fedora: 26

squid: before 4.0.23-1.fc26

CPE2.3 External links

https://bodhi.fedoraproject.org/updates/FEDORA-2018-4f8a78a5ef


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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