CVE-2015-3411 [Medium] | Input Validation Bypass in Enterprise Linux

PHP before 5.4.40, 5.5.x before 5.5.24, and 5.6.x before 5.6.8 does not ensure that pathnames lack %00 sequences, which might allow remote attackers to read or write to arbitrary files via crafted input to an application that calls (1) a DOMDocument load method, (2) the xmlwriter_open_uri function, (3) the finfo_file function, or (4) the hash_hmac_file function, as demonstrated by a filename\0.xml attack that bypasses an intended configuration in which client users may read only .xml files.

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#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.26%	3.44%	+3.18%
2	2025-12-28	0.18%	0.26%	+0.08%
3	2025-12-27	—	0.18%	—

Date

Old EPSS score

New EPSS score

Delta (New - Old)

2026-06-15

0.26%

3.44%

+3.18%

2025-12-28

0.18%

0.26%

+0.08%

2025-12-27

—

0.18%

—

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.5	3.0	MEDIUM	`CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:N) Nobody has to click “OK” or open a trap file; it can work without a victim helping. Scope (S:U) Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	3.9	2.5	[email protected]
6.4	2.0	MEDIUM	`AV:N/AC:L/Au:N/C:P/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:L) Exploitation conditions are straightforward and predictable. Authentication (AU:N) No authentication is required. Confidentiality impact (C:P) Partial confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	10.0	4.9	[email protected]

Base score

Version

Severity

Vector

Exploitability

Impact

Score source

6.5

3.0

MEDIUM

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand

Attack vector (AV:N): Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L): Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N): No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N): Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U): Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L): Some sensitive info could get out, but not a total data dump.
Integrity (I:L): Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N): Service keeps running; no real outage angle.

3.9

2.5

[email protected]

6.4

2.0

MEDIUM

AV:N/AC:L/Au:N/C:P/I:P/A:N Click to expand

Access vector (AV:N): Can be exploited remotely over network reachability.
Access complexity (AC:L): Exploitation conditions are straightforward and predictable.
Authentication (AU:N): No authentication is required.
Confidentiality impact (C:P): Partial confidentiality impact.
Integrity impact (I:P): Partial integrity impact.
Availability impact (A:N): No availability impact.

10.0

4.9

[email protected]

OS Trackers for CVE-2015-3411

vendor	priority	summary	link
`redhat`	medium	—	https://access.redhat.com/security/cve/CVE-2015-3411
`ubuntu`	medium	CVE-2015-3411 medium priority: Ubuntu including 1 source packages (php5), 5 status rows across 5 suites (precise, trusty, upstream, utopic, vivid): released 5.	https://ubuntu.com/security/CVE-2015-3411

Affected software / configurations for CVE-2015-3411

Vendor	Product	Version	Raw CPE
redhat	enterprise_linux	6.0	cpe:2.3:o:redhat:enterprise_linux:6.0:::::::*
redhat	enterprise_linux	7.0	cpe:2.3:o:redhat:enterprise_linux:7.0:::::::*
redhat	enterprise_linux_desktop	7.0	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:::::::*
redhat	enterprise_linux_hpc_node	7.0	cpe:2.3:o:redhat:enterprise_linux_hpc_node:7.0:::::::*
redhat	enterprise_linux_hpc_node_eus	7.1	cpe:2.3:o:redhat:enterprise_linux_hpc_node_eus:7.1:::::::*
redhat	enterprise_linux_server	7.0	cpe:2.3:o:redhat:enterprise_linux_server:7.0:::::::*
redhat	enterprise_linux_server_eus	7.1	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.1:::::::*
redhat	enterprise_linux_workstation	7.0	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:::::::*
php	php	<= 5.4.39	cpe:2.3:a:php:php::::::::
php	php	5.5.0	cpe:2.3:a:php:php:5.5.0:::::::*
php	php	5.5.1	cpe:2.3:a:php:php:5.5.1:::::::*
php	php	5.5.2	cpe:2.3:a:php:php:5.5.2:::::::*
php	php	5.5.3	cpe:2.3:a:php:php:5.5.3:::::::*
php	php	5.5.4	cpe:2.3:a:php:php:5.5.4:::::::*
php	php	5.5.5	cpe:2.3:a:php:php:5.5.5:::::::*
php	php	5.5.6	cpe:2.3:a:php:php:5.5.6:::::::*
php	php	5.5.7	cpe:2.3:a:php:php:5.5.7:::::::*
php	php	5.5.8	cpe:2.3:a:php:php:5.5.8:::::::*
php	php	5.5.9	cpe:2.3:a:php:php:5.5.9:::::::*
php	php	5.5.10	cpe:2.3:a:php:php:5.5.10:::::::*
php	php	5.5.11	cpe:2.3:a:php:php:5.5.11:::::::*
php	php	5.5.12	cpe:2.3:a:php:php:5.5.12:::::::*
php	php	5.5.13	cpe:2.3:a:php:php:5.5.13:::::::*
php	php	5.5.14	cpe:2.3:a:php:php:5.5.14:::::::*
php	php	5.5.15	cpe:2.3:a:php:php:5.5.15:::::::*
php	php	5.5.16	cpe:2.3:a:php:php:5.5.16:::::::*
php	php	5.5.17	cpe:2.3:a:php:php:5.5.17:::::::*
php	php	5.5.18	cpe:2.3:a:php:php:5.5.18:::::::*
php	php	5.5.19	cpe:2.3:a:php:php:5.5.19:::::::*
php	php	5.5.20	cpe:2.3:a:php:php:5.5.20:::::::*
php	php	5.5.21	cpe:2.3:a:php:php:5.5.21:::::::*
php	php	5.5.22	cpe:2.3:a:php:php:5.5.22:::::::*
php	php	5.5.23	cpe:2.3:a:php:php:5.5.23:::::::*
php	php	5.6.0	cpe:2.3:a:php:php:5.6.0:::::::*
php	php	5.6.1	cpe:2.3:a:php:php:5.6.1:::::::*
php	php	5.6.2	cpe:2.3:a:php:php:5.6.2:::::::*
php	php	5.6.3	cpe:2.3:a:php:php:5.6.3:::::::*
php	php	5.6.4	cpe:2.3:a:php:php:5.6.4:::::::*
php	php	5.6.5	cpe:2.3:a:php:php:5.6.5:::::::*
php	php	5.6.6	cpe:2.3:a:php:php:5.6.6:::::::*
php	php	5.6.7	cpe:2.3:a:php:php:5.6.7:::::::*

References for CVE-2015-3411

URL	Tags
http://git.php.net/?p=php-src.git%3Ba=commit%3Bh=4435b9142ff9813845d5c97ab29a5d637bedb257
http://php.net/ChangeLog-5.php
http://rhn.redhat.com/errata/RHSA-2015-1135.html
http://rhn.redhat.com/errata/RHSA-2015-1186.html
http://rhn.redhat.com/errata/RHSA-2015-1187.html
http://rhn.redhat.com/errata/RHSA-2015-1218.html
http://www.oracle.com/technetwork/topics/security/linuxbulletinjan2016-2867209.html
http://www.securityfocus.com/bid/75255
http://www.securitytracker.com/id/1032709
https://bugs.php.net/bug.php?id=69353	Exploit

URL

CVE-2015-3411

Public exploit references (Exploit-DB) for CVE-2015-3411

Exploit prediction scoring system (EPSS) score for CVE-2015-3411

Common vulnerability scoring system (CVSS) metrics for CVE-2015-3411

Weakness enumeration for CVE-2015-3411

OS Trackers for CVE-2015-3411

Affected software / configurations for CVE-2015-3411

References for CVE-2015-3411