CVE-2015-3217

2016-12-1300:00:00

ubuntu.com

CVSS2

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

NONE

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:N/C:N/I:N/A:P

CVSS3

7.5

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

NONE

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

0.014

Percentile

86.5%

JSON

PCRE 7.8 and 8.32 through 8.37, and PCRE2 10.10 mishandle group empty
matches, which might allow remote attackers to cause a denial of service
(stack-based buffer overflow) via a crafted regular expression, as
demonstrated by /^(?:(?(1)\.|([^\\W_])?)+)+$/.

Bugs

Notes

Author	Note
seth-arnold	This might be disputed, Tavis says it is likely php misusing the pcre3 API. I suspect allowing attackers to supply regular expressions is always going to be a bad idea.
mdeslaur	upsteam bug says this is an issue with php, and are not going to fix, so marking this as not-affected