CVE-2021-21704

Public Exploit
Multiple vulnerabilities in Firebird client extension

Description

In PHP versions 7.3.x below 7.3.29, 7.4.x below 7.4.21 and 8.0.x below 8.0.8, when using Firebird PDO driver extension, a malicious database server could cause crashes in various database functions, such as getAttribute(), execute(), fetch() and others by returning invalid response data that is not parsed correctly by the driver. This can result in crashes, denial of service or potentially memory corruption.

Categories

5.0
CVSS
Severity: Medium
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.13%
Vendor Advisory gentoo.org Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net Vendor Advisory php.net
Affected: PHP Group PHP
Published at:
Updated at:

References

Link Tags
https://bugs.php.net/bug.php?id=76448 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=76449 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=76450 issue tracking patch vendor advisory exploit
https://bugs.php.net/bug.php?id=76452 issue tracking patch vendor advisory exploit
https://security.netapp.com/advisory/ntap-20211029-0006/ third party advisory
https://security.gentoo.org/glsa/202209-20 third party advisory vendor advisory

Frequently Asked Questions

What is the severity of CVE-2021-21704?
CVE-2021-21704 has been scored as a medium severity vulnerability.
How to fix CVE-2021-21704?
To fix CVE-2021-21704, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-21704 being actively exploited in the wild?
It is possible that CVE-2021-21704 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2021-21704?
CVE-2021-21704 affects PHP Group PHP.
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