CVE-2013-3735

high
Published 2013-05-31 ยท Modified 2026-04-29
CVSS v3
7.5
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS v4 NEW
โ€”
not yet in upstream
VIR risk
7.5

Description

The Zend Engine in PHP before 5.4.16 RC1, and 5.5.0 before RC2, does not properly determine whether a parser error occurred, which allows context-dependent attackers to cause a denial of service (memory consumption and application crash) via a crafted function definition, as demonstrated by an attack within a shared web-hosting environment. NOTE: the vendor's http://php.net/security-note.php page says "for critical security situations you should be using OS-level security by running multiple web servers each as their own user id.

Predictions

Exploit likelihood
83%
Patch ETA
โ€”

Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or โ€” if you've already worked around this in production โ€” publish your fix to the community-verified tier.

โœš Propose a mitigation on Community โ†’ Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here with source_tier=community-verified.

Application impact

VendorProductVersionsFixed
php phpphp{"endIncluding":"5.4.15"}
php phpphp5.4.0
php phpphp5.4.1
php phpphp5.4.2
php phpphp5.4.3
php phpphp5.4.4
php phpphp5.4.5
php phpphp5.4.6
php phpphp5.4.7
php phpphp5.4.8
php phpphp5.4.9
php phpphp5.4.10
php phpphp5.4.11
php phpphp5.4.12
php phpphp5.4.13
php phpphp5.4.14
php phpphp5.5.0

References

CWEs

CWE-20

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.