CVE-2016-0736

high Apache
CVSS v3 Base Score
7.5
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
EPSS Score
41.7%
Exploitation probability in 30 days
Top 3% most likely to be exploited
Attack Characteristics
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Confidentiality
High
Integrity
None
Availability
None
Published: July 27, 2017 (3213 days ago)
Last Modified: May 13, 2026
Vendor: Apache
Source: NVD

Description

In Apache HTTP Server versions 2.4.0 to 2.4.23, mod_session_crypto was encrypting its data/cookie using the configured ciphers with possibly either CBC or ECB modes of operation (AES256-CBC by default), hence no selectable or builtin authenticated encryption. This made it vulnerable to padding oracle attacks, particularly with CBC.

CWE

CWE-310

Affected Products

apache http server

References

🔗 rhn.redhat.com 🔗 www.debian.org 🔗 www.securityfocus.com 🔗 www.securitytracker.com 🔗 access.redhat.com