CVE-2017-3156

Description

The OAuth2 Hawk and JOSE MAC Validation code in Apache CXF prior to 3.0.13 and 3.1.x prior to 3.1.10 is not using a constant time MAC signature comparison algorithm which may be exploited by sophisticated timing attacks.

7.5

CVSS

Severity: High

CVSS 3.0 •

CVSS 2.0 •

EPSS 13.07% Top 10%

Vendor Advisory redhat.com Vendor Advisory apache.org

Affected: Apache Software Foundation Apache CXF

References

Link	Tags
http://www.securityfocus.com/bid/96398	vdb entry third party advisory
https://access.redhat.com/errata/RHSA-2017:1832	vendor advisory
http://cxf.apache.org/security-advisories.data/CVE-2017-3156.txt.asc	vendor advisory
https://lists.apache.org/thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c%40%3Ccommits.cxf.apache.org%3E	mailing list
https://lists.apache.org/thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.org%3E	mailing list
https://lists.apache.org/thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.org%3E	mailing list
https://lists.apache.org/thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.org%3E	mailing list
https://lists.apache.org/thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E	mailing list
https://lists.apache.org/thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E	mailing list

Frequently Asked Questions

What is the severity of CVE-2017-3156?: CVE-2017-3156 has been scored as a high severity vulnerability.
How to fix CVE-2017-3156?: To fix CVE-2017-3156, 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-2017-3156 being actively exploited in the wild?: It is possible that CVE-2017-3156 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2017-3156?: CVE-2017-3156 affects Apache Software Foundation Apache CXF.