VIR Vulnerability Intelligence Relay

CVE-2017-12933

critical
Published 2017-08-18 · Modified 2026-05-13
💬 Discuss on Community ✚ Propose mitigation
CVSS v3
9.8
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4 NEW
—
not yet in upstream
VIR risk
9.8

Description

The finish_nested_data function in ext/standard/var_unserializer.re in PHP before 5.6.31, 7.0.x before 7.0.21, and 7.1.x before 7.1.7 is prone to a buffer over-read while unserializing untrusted data. Exploitation of this issue can have an unspecified impact on the integrity of PHP.

Predictions

Exploit likelihood
97%
Patch ETA
—

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 — if you've already worked around this in production — publish your fix to the community-verified tier.

✚ Propose a mitigation on Community → 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.

OS impact
suse SUSE Affected 1 release
VersionStatusFixed in
— Affected —

Application impact
VendorProductVersionsFixed
php phpphp{"endIncluding":"5.6.30"}
php phpphp7.0.0
php phpphp7.0.1
php phpphp7.0.2
php phpphp7.0.3
php phpphp7.0.4
php phpphp7.0.5
php phpphp7.0.6
php phpphp7.0.7
php phpphp7.0.8
php phpphp7.0.9
php phpphp7.0.10
php phpphp7.0.11
php phpphp7.0.12
php phpphp7.0.13
php phpphp7.0.14
php phpphp7.0.15
php phpphp7.0.16
php phpphp7.0.17
php phpphp7.0.18
php phpphp7.0.19
php phpphp7.0.20
php phpphp7.1.0
php phpphp7.1.1
php phpphp7.1.2
php phpphp7.1.3
php phpphp7.1.4
php phpphp7.1.5
php phpphp7.1.6

References

CWEs

CWE-125

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

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