CVE-2016-0736

7.5 highEPSS 49%

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.

Severity

CVSS 3.0

7.5 high

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

EPSS: 49% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-31)
CWE: CWE-310
Published: 2017-07-27
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

apache:http_server

References

http://rhn.redhat.com/errata/RHSA-2017-1415.html
http://www.debian.org/security/2017/dsa-3796
http://www.securityfocus.com/bid/95078
http://www.securitytracker.com/id/1037508
https://access.redhat.com/errata/RHSA-2017:0906

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