Vulnerability advisory

GHSA-pw2q-qwvj-gh43

Cache Flooding in TYPO3 Frontend

Published Jun 5, 2024Updated Dec 2, 2024OSV record ↗

Severity

CVSS 3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected versions

typo3/cms Packagist

Affected	Fixed in
`6.2.0` to before 6.2.27	`6.2.27`Advisories →
Also listed as affected (28) `6.2.0` `6.2.1` `6.2.10` `6.2.10-rc1` `6.2.11` `6.2.12` `6.2.13` `6.2.14` `6.2.15` `6.2.16` `6.2.17` `6.2.18` `6.2.19` `6.2.2` `6.2.20` `6.2.21` `6.2.22` `6.2.23` `6.2.24` `6.2.25` `6.2.26` `6.2.3` `6.2.4` `6.2.5` `6.2.6` `6.2.7` `6.2.8` `6.2.9`
`7.6.0` to before 7.6.11	`7.6.11`Advisories →
Also listed as affected (11) `7.6.0` `7.6.1` `7.6.10` `7.6.2` `7.6.3` `7.6.4` `7.6.5` `7.6.6` `7.6.7` `7.6.8` `7.6.9`
`8.0.0` to before 8.3.1	`8.3.1`Advisories →
Also listed as affected (8) `8.0.0` `8.0.1` `8.1.0` `8.1.1` `8.1.2` `8.2.0` `8.2.1` `8.3.0`

Description

Links with a valid cHash argument lead to newly generated page cache entries. Because the cHash is not bound to a specific page, attackers could use valid cHash arguments for multiple pages, leading to additional useless page cache entries. Depending on the number of pages in the system and the number of available valid links with a cHash, attackers could add a considerable amount of additional cache entries, which in the end exceed storage limits and thus could lead to the system not responding any more. This means the Cache Flooding attack potentially could lead to a successful Denial of Service (DoS) attack.

References

Webgithub.com/FriendsOfPHP/security-advisories/blob/master/typo3/cms/2016-09-14-2.yaml ↗