CVE-2012-3527

Severity: medium (CVSS 4.6 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 2.1% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2012-09-05 · updated 2026-06-16
Weakness: CWE-502

Description

view_help.php in the backend help system in TYPO3 4.5.x before 4.5.19, 4.6.x before 4.6.12 and 4.7.x before 4.7.4 allows remote authenticated backend users to unserialize arbitrary objects and possibly execute arbitrary PHP code via an unspecified parameter, related to a "missing signature (HMAC)."

Affected products

Debian Linux: 6.0, 7.0
typo3: from 4.5.0 before 4.5.19; from 4.6.0 before 4.6.12; from 4.7.0 before 4.7.4 — fixed in 4.5.19, 4.6.12, 4.7.4

How to fix

Upgrade to a fixed version: typo3 4.5.19, 4.6.12, 4.7.4. Check the vendor advisory for mitigations.

References

http://osvdb.org/84773
http://secunia.com/advisories/50287
http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-004/
http://www.debian.org/security/2012/dsa-2537
http://www.openwall.com/lists/oss-security/2012/08/22/8
https://exchange.xforce.ibmcloud.com/vulnerabilities/77791
http://osvdb.org/84773
http://secunia.com/advisories/50287
http://typo3.org/teams/security/security-bulletins/typo3-core/typo3-core-sa-2012-004/
http://www.debian.org/security/2012/dsa-2537
http://www.openwall.com/lists/oss-security/2012/08/22/8
https://exchange.xforce.ibmcloud.com/vulnerabilities/77791

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