CVE-2016-0736

Public Exploit

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.

Category

7.5
CVSS
Severity: High
CVSS 3.0 •
CVSS 2.0 •
EPSS 10.57% Top 10%
Vendor Advisory debian.org Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory redhat.com Vendor Advisory gentoo.org Vendor Advisory apache.org
Affected: Apache Software Foundation Apache HTTP Server
Published at:
Updated at:

References

Link Tags
https://support.apple.com/HT208221
http://www.debian.org/security/2017/dsa-3796 vendor advisory
https://www.exploit-db.com/exploits/40961/ exploit
http://www.securitytracker.com/id/1037508 third party advisory vdb entry
https://access.redhat.com/errata/RHSA-2017:1413 vendor advisory
https://access.redhat.com/errata/RHSA-2017:1161 vendor advisory
https://www.tenable.com/security/tns-2017-04
https://access.redhat.com/errata/RHSA-2017:1414 vendor advisory
https://h20566.www2.hpe.com/hpsc/doc/public/display?docLocale=en_US&docId=emr_na-hpesbux03725en_us third party advisory
http://www.securityfocus.com/bid/95078 third party advisory vdb entry
http://rhn.redhat.com/errata/RHSA-2017-1415.html vendor advisory
https://access.redhat.com/errata/RHSA-2017:0906 vendor advisory
https://httpd.apache.org/security/vulnerabilities_24.html#CVE-2016-0736 vendor advisory
https://security.gentoo.org/glsa/201701-36 third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20180423-0001/
https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E mailing list
https://lists.apache.org/thread.html/re1e3a24664d35bcd0a0e793e0b5fc6ca6c107f99a1b2c545c5d4b467%40%3Ccvs.httpd.apache.org%3E mailing list
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Frequently Asked Questions

What is the severity of CVE-2016-0736?
CVE-2016-0736 has been scored as a high severity vulnerability.
How to fix CVE-2016-0736?
To fix CVE-2016-0736, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2016-0736 being actively exploited in the wild?
It is possible that CVE-2016-0736 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~11% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2016-0736?
CVE-2016-0736 affects Apache Software Foundation Apache HTTP Server.
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