Gentoo update for PHP



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-7071
CVE-2021-21702
CWE-ID CWE-20
CWE-476
Exploitation vector Network
Public exploit Public exploit code for vulnerability #1 is available.
Vulnerable software
 Gentoo Linux
Operating systems & Components / Operating system

Vendor Gentoo

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Input validation error

EUVDB-ID: #VU49338

Risk: Medium

CVSSv4.0: 5.5 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2020-7071

CWE-ID: CWE-20 - Improper input validation

Exploit availability: No

Description

The vulnerability allows a remote attacker to bypass implemented security restrictions.

The vulnerability exists due to insufficient validation of URL performed via the "FILTER_VALIDATE_URL" setting. A remote attacker can use the "@" characters in the URL to bypass implemented filter and force the application to accept arbitrary URL instead of the defined by the option.

Example:

http://evel.website@trusted.website

Mitigation

Update the affected packages.
dev-lang/php to version: 8.0.6

Vulnerable software versions

Gentoo Linux: All versions

CPE2.3 External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202105-23


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. However, proof of concept for this vulnerability is available.

2) NULL pointer dereference

EUVDB-ID: #VU50403

Risk: Medium

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-21702

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 within the SoapClient in PHP. A remote attacker can pass specially crafted data to the application and perform a denial of service (DoS) attack.

Mitigation

Update the affected packages.
dev-lang/php to version: 8.0.6

Vulnerable software versions

Gentoo Linux: All versions

CPE2.3 External links

http://security.gentoo.org/
http://security.gentoo.org/glsa/202105-23


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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