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CVE-2017-3156

23
FAUCET Score

CVE-2017-3156 describes a timing attack vulnerability in Apache CXF versions prior to 3.0.13 and 3.1.10. The OAuth2 Hawk and JOSE MAC Validation code in these versions did not use a constant-time MAC signature comparison algorithm, making it susceptible to sophisticated timing attacks. This vulnerability carries a CVSS score of 7.5 (High), indicating a network-based attack with low complexity that could lead to high confidentiality impact. There is no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion or media coverage surrounding this CVE.

Impacted Technologies

VendorProductVersion(s)CPE
<= 3.0.12CPE matchmatch criteria
cpe:2.3:a:apache:cxf:*:*:*:*:*:*:*:*
3.1.0CPE matchmatch criteria
cpe:2.3:a:apache:cxf:3.1.0:*:*:*:*:*:*:*
3.1.1CPE matchmatch criteria
cpe:2.3:a:apache:cxf:3.1.1:*:*:*:*:*:*:*
3.1.2CPE matchmatch criteria
cpe:2.3:a:apache:cxf:3.1.2:*:*:*:*:*:*:*
3.1.3CPE matchmatch criteria
cpe:2.3:a:apache:cxf:3.1.3:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.0

7.5HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
3.9
Impact Score
3.6
CvssVersion
3.0

Exploit Intelligence

EPSS Score
6.31%
Probability of exploitation in next 30 days
EPSS Percentile
92.9%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0631 is in the 88th percentile among its peer group of 51,506 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (5)

mavenpatch availablevia ghsa
Product: org.apache.cxf.karaf:apache-cxfFixed in: 3.0.13
mavenpatch availablevia ghsa
Product: org.apache.cxf.karaf:apache-cxfFixed in: 3.1.10
redhatpatch availablevia redhat_api
Product: Red Hat JBoss A-MQ 6.3Fixed in: cxf
View patch
redhatpatch availablevia redhat_api
Product: Red Hat JBoss Fuse 6.3Fixed in: cxf
View patch
redhatvendor investigatingvia redhat_api
Product: Red Hat OpenShift Enterprise 2Fixed in: cxf

Vendor Advisories (2)

mavenGHSA-qc2p-q7x9-v64phigh

Covert Timing Channel in Apache CXF

May 13, 2022
redhatCVE-2017-3156Moderate

cxf: CXF OAuth2 Hawk and JOSE MAC Validation code are vulnerable to timing attacks

Feb 20, 2017

References

cxf.apache.org / security-advisories.data/CVE-2017-3156.txt.asc
Vendor Advisory
access.redhat.com / errata/RHSA-2017:1832
lists.apache.org / thread.html/r36e44ffc1a9b365327df62cdfaabe85b9a5637de102cea07d79b2dbf%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rc774278135816e7afc943dc9fc78eb0764f2c84a2b96470a0187315c%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rd49aabd984ed540c8ff7916d4d79405f3fa311d2fdbcf9ed307839a6%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rec7160382badd3ef4ad017a22f64a266c7188b9ba71394f0d321e2d4%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rfb87e0bf3995e7d560afeed750fac9329ff5f1ad49da365129b7f89e%40%3Ccommits.cxf.apache.org%3E
lists.apache.org / thread.html/rff42cfa5e7d75b7c1af0e37589140a8f1999e578a75738740b244bd4%40%3Ccommits.cxf.apache.org%3E
securityfocus.com / bid/96398
Third Party AdvisoryVDB Entry