CVE-2021-21704
medium
CVSS v3
—
CVSS v2
—
VIR risk
5.5
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.
Predictions
Exploit likelihood
20%
Patch ETA
—
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
Vendor advisory: debian — https://security-tracker.debian.org/tracker/CVE-2021-21704
Vendor advisory: suse — https://www.suse.com/security/cve/CVE-2021-21704.html
Vendor advisory: arch — https://security.archlinux.org/ASA-202107-15
OS impact
| OS | Version | Status | Fixed in |
|---|---|---|---|
| arch | fixed | 8.0.8-1 | |
| sles | affected | | |
| debian | bullseye | fixed | 7.4.21-1+deb11u1 |
References
Verify integrity in audit chain (admin only). AS-IS.