CVE-2021-21704

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.

Weakness classification

• security@php.net: CWE-125
• nvd@nist.gov: CWE-787

Primary references

• security@php.net — Exploit, Issue Tracking, Patch, Vendor Advisory
• security@php.net — Exploit, Issue Tracking, Patch, Vendor Advisory
• security@php.net — Exploit, Issue Tracking, Patch, Vendor Advisory
• security@php.net — Exploit, Issue Tracking, Patch, Vendor Advisory
• security@php.net — Third Party Advisory
• security@php.net — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Exploit, Issue Tracking, Patch, Vendor Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory
• af854a3a-2127-422b-91ae-364da2661108 — Third Party Advisory