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impervablogAvishay ZawoznikIMPERVABLOG:E9D83907E76B2B468512918F211FB65E
HistoryAug 23, 2018 - 2:25 p.m.

Read: Apache Struts Patches ‘Critical Vulnerability’ CVE-2018-11776

2018-08-2314:25:36
Avishay Zawoznik
www.imperva.com
984

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.976 High

EPSS

Percentile

100.0%

On August 22, Apache Struts released a security patch fixing a critical remote code execution vulnerability. This vulnerability has been assigned CVE-2018-11776 (S2-057) and affects Apache Struts versions 2.3 to 2.3.34 and 2.5 to 2.5.16.

The vulnerability was responsibly disclosed by Man Yue Mo from the Semmle Security Research team, check out a detailed description here. An exploit PoC has already been published.

Imperva WAF customers are protected out of the box against this vulnerability, no need for any special configuration on the customer end.

8.1 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

HIGH

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

9.3 High

CVSS2

Access Vector

NETWORK

Access Complexity

MEDIUM

Authentication

NONE

Confidentiality Impact

COMPLETE

Integrity Impact

COMPLETE

Availability Impact

COMPLETE

AV:N/AC:M/Au:N/C:C/I:C/A:C

0.976 High

EPSS

Percentile

100.0%