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CVE-2021-21704

Status Candidate

Overview

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.

Related Files

Gentoo Linux Security Advisory 202209-20
Posted Sep 30, 2022
Authored by Gentoo | Site security.gentoo.org

Gentoo Linux Security Advisory 202209-20 - Multiple vulnerabilities have been discovered in PHP, the worst of which could result in local root privilege escalation. Versions less than 7.4.30:7.4 are affected.

tags | advisory, local, root, php, vulnerability
systems | linux, gentoo
advisories | CVE-2021-21703, CVE-2021-21704, CVE-2021-21705, CVE-2021-21708, CVE-2022-31625, CVE-2022-31626, CVE-2022-31627
SHA-256 | 32033fadca7b14049c6a84194d227cf9986263bb6581ad379d00c7d51c73328c
Debian Security Advisory 4935-1
Posted Jul 28, 2021
Authored by Debian | Site debian.org

Debian Linux Security Advisory 4935-1 - Multiple security issues were found in PHP, a widely-used open source general purpose scripting language which could result an SSRF bypass of the FILTER_VALIDATE_URL check and denial of service or potentially the execution of arbitrary code in the Firebird PDO.

tags | advisory, denial of service, arbitrary, php
systems | linux, debian
advisories | CVE-2021-21704, CVE-2021-21705
SHA-256 | 5c5de3d94e5c01e0c46189886df935c5f426216b9c105ee49d6ee312d4327a61
Ubuntu Security Notice USN-5006-2
Posted Jul 14, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5006-2 - USN-5006-1 fixed several vulnerabilities in PHP. This update provides the corresponding update for Ubuntu 14.04 ESM and Ubuntu 16.04 ESM. It was discovered that PHP incorrectly handled certain PHAR files. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service, or possibly obtain sensitive information. Various other issues were also addressed.

tags | advisory, remote, denial of service, php, vulnerability
systems | linux, ubuntu
advisories | CVE-2020-7068, CVE-2020-7071, CVE-2021-21702, CVE-2021-21704, CVE-2021-21705
SHA-256 | eedca1a470ded97b0623427c6e5fdcf4bb966c9f811fd215e5d150d46f82e283
Ubuntu Security Notice USN-5006-1
Posted Jul 7, 2021
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 5006-1 - It was discovered that PHP incorrectly handled certain PHAR files. A remote attacker could possibly use this issue to cause PHP to crash, resulting in a denial of service, or possibly obtain sensitive information. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. It was discovered that PHP incorrectly handled parsing URLs with passwords. A remote attacker could possibly use this issue to cause PHP to mis-parse the URL and produce wrong data. This issue only affected Ubuntu 18.04 LTS, Ubuntu 20.04 LTS, and Ubuntu 20.10. Various other issues were also addressed.

tags | advisory, remote, denial of service, php
systems | linux, ubuntu
advisories | CVE-2020-7068, CVE-2020-7071, CVE-2021-21702, CVE-2021-21704, CVE-2021-21705
SHA-256 | 6792ac22a8083ba4b2e659f4b0c17f306cecbe13cf953446ec618208f89b51a6
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