Description
The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 modifies certain data structures without considering whether they are copies of the _zero_, _one_, or _two_ global variable, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.
Published: 2016-05-22
Score: 9.8 Critical
EPSS: 6.5% Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories
Source ID Title
Debian DLA Debian DLA DLA-628-1 php5 security update
Debian DSA Debian DSA DSA-3602-1 php5 security update
EUVD EUVD EUVD-2016-5525 The bcpowmod function in ext/bcmath/bcmath.c in PHP before 5.5.35, 5.6.x before 5.6.21, and 7.x before 7.0.6 modifies certain data structures without considering whether they are copies of the _zero_, _one_, or _two_ global variable, which allows remote attackers to cause a denial of service or possibly have unspecified other impact via a crafted call.
Ubuntu USN Ubuntu USN USN-2984-1 PHP vulnerabilities
History

No history.

Subscriptions

Fedoraproject Fedora
Opensuse Leap
Php Php
Redhat Rhel Software Collections
cve-icon MITRE

Status: PUBLISHED

Assigner: debian

Published:

Updated: 2024-08-06T00:32:25.613Z

Reserved: 2016-05-05T00:00:00.000Z

Link: CVE-2016-4538

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2016-05-22T01:59:22.933

Modified: 2026-05-06T22:30:45.220

Link: CVE-2016-4538

cve-icon Redhat

Severity : Low

Publid Date: 2016-04-24T00:00:00Z

Links: CVE-2016-4538 - Bugzilla

cve-icon OpenCVE Enrichment

No data.

Weaknesses