Use-after-free in PHP



Published: 2020-08-07 | Updated: 2020-08-07
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2020-7068
CWE-ID CWE-416
Exploitation vector Network
Public exploit N/A
Vulnerable software
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PHP
Universal components / Libraries / Scripting languages

Vendor PHP Group

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Use-after-free

EUVDB-ID: #VU34121

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-2020-7068

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to compromise vulnerable system.

The vulnerability exists due to a use-after-free error in the "phar_parse_zipfile" function. A remote attacker can can cause a denial of service (DoS) condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

PHP: 7.2.0 - 7.2.32, 7.3.0 - 7.3.20, 7.4.0 - 7.4.8


CPE2.3 External links

http://bugs.php.net/bug.php?id=79797
http://www.php.net/ChangeLog-7.php#PHP_7_3

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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