High severity · published Jul 27, 2017
CVE-2016-0736
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…
7.5
CVSS
49%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)49.0% · higher than 99% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HS
HTTP Server · Apache
2.4.0; 2.4.1; 2.4.2; 2.4.3; 2.4.6; 2.4.7; +11 more · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2016-0736
CVE.org
https://www.cve.org/CVERecord?id=CVE-2016-0736
rhn.redhat.com
http://rhn.redhat.com/errata/RHSA-2017-1415.html
www.debian.org
http://www.debian.org/security/2017/dsa-3796
Third Party Advisory
http://www.securityfocus.com/bid/95078
Third Party Advisory
http://www.securitytracker.com/id/1037508
access.redhat.com
https://access.redhat.com/errata/RHSA-2017:0906
access.redhat.com
https://access.redhat.com/errata/RHSA-2017:1161
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