CVE-2017-2585
keycloak-core vulnerable to timing attacks against JWS token verification
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- High
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- High
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
NVD Score used
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
- Record
CVE-2017-2585- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:P/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
CVE List No score
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
- Record
CVE-2017-2585- Updated
- 2026-11-02
EUVDEUVD-2018-0707 No score
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
- Record
EUVD-2018-0707- Updated
- 2026-11-03
GitHub AdvisoriesGHSA-w6gv-3r3v-gwgj
keycloak-core vulnerable to timing attacks against JWS token verification
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
- Record
GHSA-w6gv-3r3v-gwgj- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSV
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
- Record
CVE-2017-2585- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Updated
- 2026-11-02
OSVGHSA-w6gv-3r3v-gwgj
keycloak-core vulnerable to timing attacks against JWS token verification
Red Hat Keycloak before version 2.5.1 has an implementation of HMAC verification for JWS tokens that uses a method that runs in non-constant time, potentially leaving the application vulnerable to timing attacks.
- Record
GHSA-w6gv-3r3v-gwgj- CVSS 3.0
- 5.9 Medium
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N - Weakness
- CWE-200
- Updated
- 2026-11-02
OSVRHSA-2017:0872
Red Hat Security Advisory: Red Hat Single Sign-On 7.1 update on RHEL 6
- Record
RHSA-2017:0872- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
OSVRHSA-2017:0873
Red Hat Security Advisory: Red Hat Single Sign-On 7.1 update on RHEL 7
- Record
RHSA-2017:0873- CVSS 3.0
- 7.5 High
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
org.keycloak:keycloak-coreMaven |
before 2.5.1 | 2.5.1 |
org.keycloak:keycloak-coreMaven |
before 2.5.1, plus listed versions 1.0-alpha-11.0-alpha-1-120620131.0-alpha-21.0-alpha-31.0-alpha-4 Show 45 moreShow less1.0-beta-11.0-beta-1-201505211.0-beta-1-201505231.0-beta-21.0-beta-31.0-beta-41.0-final1.0-rc-11.0-rc-21.0.1.Final1.0.2.Final1.0.3.Final1.0.4.Final1.0.5.Final1.1.0.Beta11.1.0.Beta21.1.0.Final1.1.1.Final1.2.0.Beta11.2.0.CR11.2.0.Final1.3.0.Final1.3.1.Final1.4.0.Final1.5.0-Final1.5.0.Final1.5.1.Final1.6.0.Final1.6.1.Final1.7.0.CR11.7.0.Final1.8.0.Alpha11.8.0.CR11.8.0.CR21.8.0.CR31.8.0.Final1.8.1.Final1.9.0.CR11.9.0.Final1.9.1.Final1.9.2.Final1.9.3.Final1.9.4.Final1.9.5.Final1.9.7.Final |
2.5.1 |
rh-sso7Red Hat:red_hat_single_sign_on:7::el6 |
before 0:1-2.jbcs.el6 | 0:1-2.jbcs.el6 |
rh-sso7-freemarkerRed Hat:red_hat_single_sign_on:7::el6 |
before 0:2.3.23-1.redhat_2.2.jbcs.el6 | 0:2.3.23-1.redhat_2.2.jbcs.el6 |
rh-sso7-javapackages-toolsRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.4.1-5.15.3.jbcs.el6 | 0:3.4.1-5.15.3.jbcs.el6 |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7::el6 |
before 0:2.5.5-2.Final_redhat_1.1.jbcs.el6 | 0:2.5.5-2.Final_redhat_1.1.jbcs.el6 |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7::el6 |
before 0:2.5.5-2.Final_redhat_1.1.jbcs.el6 | 0:2.5.5-2.Final_redhat_1.1.jbcs.el6 |
rh-sso7-libunix-dbus-javaRed Hat:red_hat_single_sign_on:7::el6 |
before 0:0.8.0-2.jbcs.el6 | 0:0.8.0-2.jbcs.el6 |
rh-sso7-libunix-dbus-java-debuginfoRed Hat:red_hat_single_sign_on:7::el6 |
before 0:0.8.0-2.jbcs.el6 | 0:0.8.0-2.jbcs.el6 |
rh-sso7-libunix-dbus-java-develRed Hat:red_hat_single_sign_on:7::el6 |
before 0:0.8.0-2.jbcs.el6 | 0:0.8.0-2.jbcs.el6 |
Show 26 moreShow less
| Package | Affected | Fixed |
|---|---|---|
rh-sso7-liquibaseRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.4.1-2.redhat_2.1.jbcs.el6 | 0:3.4.1-2.redhat_2.1.jbcs.el6 |
rh-sso7-liquibase-coreRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.4.1-2.redhat_2.1.jbcs.el6 | 0:3.4.1-2.redhat_2.1.jbcs.el6 |
rh-sso7-python-javapackagesRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.4.1-5.15.3.jbcs.el6 | 0:3.4.1-5.15.3.jbcs.el6 |
rh-sso7-runtimeRed Hat:red_hat_single_sign_on:7::el6 |
before 0:1-2.jbcs.el6 | 0:1-2.jbcs.el6 |
rh-sso7-twitter4jRed Hat:red_hat_single_sign_on:7::el6 |
before 0:4.0.4-1.redhat_3.1.jbcs.el6 | 0:4.0.4-1.redhat_3.1.jbcs.el6 |
rh-sso7-twitter4j-coreRed Hat:red_hat_single_sign_on:7::el6 |
before 0:4.0.4-1.redhat_3.1.jbcs.el6 | 0:4.0.4-1.redhat_3.1.jbcs.el6 |
rh-sso7-zxingRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.2.1-1.redhat_4.1.jbcs.el6 | 0:3.2.1-1.redhat_4.1.jbcs.el6 |
rh-sso7-zxing-coreRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.2.1-1.redhat_4.1.jbcs.el6 | 0:3.2.1-1.redhat_4.1.jbcs.el6 |
rh-sso7-zxing-javaseRed Hat:red_hat_single_sign_on:7::el6 |
before 0:3.2.1-1.redhat_4.1.jbcs.el6 | 0:3.2.1-1.redhat_4.1.jbcs.el6 |
rh-sso7Red Hat:red_hat_single_sign_on:7::el7 |
before 0:1-2.jbcs.el7 | 0:1-2.jbcs.el7 |
rh-sso7-freemarkerRed Hat:red_hat_single_sign_on:7::el7 |
before 0:2.3.23-1.redhat_2.2.jbcs.el7 | 0:2.3.23-1.redhat_2.2.jbcs.el7 |
rh-sso7-javapackages-toolsRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.4.1-5.15.3.jbcs.el7 | 0:3.4.1-5.15.3.jbcs.el7 |
rh-sso7-keycloakRed Hat:red_hat_single_sign_on:7::el7 |
before 0:2.5.5-2.Final_redhat_1.1.jbcs.el7 | 0:2.5.5-2.Final_redhat_1.1.jbcs.el7 |
rh-sso7-keycloak-serverRed Hat:red_hat_single_sign_on:7::el7 |
before 0:2.5.5-2.Final_redhat_1.1.jbcs.el7 | 0:2.5.5-2.Final_redhat_1.1.jbcs.el7 |
rh-sso7-libunix-dbus-javaRed Hat:red_hat_single_sign_on:7::el7 |
before 0:0.8.0-2.jbcs.el7 | 0:0.8.0-2.jbcs.el7 |
rh-sso7-libunix-dbus-java-debuginfoRed Hat:red_hat_single_sign_on:7::el7 |
before 0:0.8.0-2.jbcs.el7 | 0:0.8.0-2.jbcs.el7 |
rh-sso7-libunix-dbus-java-develRed Hat:red_hat_single_sign_on:7::el7 |
before 0:0.8.0-2.jbcs.el7 | 0:0.8.0-2.jbcs.el7 |
rh-sso7-liquibaseRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.4.1-2.redhat_2.1.jbcs.el7 | 0:3.4.1-2.redhat_2.1.jbcs.el7 |
rh-sso7-liquibase-coreRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.4.1-2.redhat_2.1.jbcs.el7 | 0:3.4.1-2.redhat_2.1.jbcs.el7 |
rh-sso7-python-javapackagesRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.4.1-5.15.3.jbcs.el7 | 0:3.4.1-5.15.3.jbcs.el7 |
rh-sso7-runtimeRed Hat:red_hat_single_sign_on:7::el7 |
before 0:1-2.jbcs.el7 | 0:1-2.jbcs.el7 |
rh-sso7-twitter4jRed Hat:red_hat_single_sign_on:7::el7 |
before 0:4.0.4-1.redhat_3.1.jbcs.el7 | 0:4.0.4-1.redhat_3.1.jbcs.el7 |
rh-sso7-twitter4j-coreRed Hat:red_hat_single_sign_on:7::el7 |
before 0:4.0.4-1.redhat_3.1.jbcs.el7 | 0:4.0.4-1.redhat_3.1.jbcs.el7 |
rh-sso7-zxingRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.2.1-1.redhat_4.1.jbcs.el7 | 0:3.2.1-1.redhat_4.1.jbcs.el7 |
rh-sso7-zxing-coreRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.2.1-1.redhat_4.1.jbcs.el7 | 0:3.2.1-1.redhat_4.1.jbcs.el7 |
rh-sso7-zxing-javaseRed Hat:red_hat_single_sign_on:7::el7 |
before 0:3.2.1-1.redhat_4.1.jbcs.el7 | 0:3.2.1-1.redhat_4.1.jbcs.el7 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, products | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2017-2585 is a medium vulnerability (CVSS 5.9) in Keycloak, published March 12, 2018. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 1.97%, the 80th percentile. Fixed in org.keycloak:keycloak-core 2.5.1.
References
rhn.redhat.com/errata/RHSA-2017-0876.html
securitytracker.com/id/1038180
bugzilla.redhat.com/show_bug.cgi?id=1412376
securityfocus.com/bid/97393
access.redhat.com/errata/RHSA-2017:0873
Show 20 moreShow less
nvd.nist.gov/vuln/detail/CVE-2017-2585
github.com/advisories/GHSA-w6gv-3r3v-gwgj
web.archive.org/web/20170420113802/http://www.securitytracker.com/id/1038180
issues.redhat.com/browse/RHSSO-427
security.access.redhat.com/data/csaf/v2/advisories/2017/rhsa-2017_0872.json
cve.org/CVERecord?id=CVE-2016-8629
Left out here: 14 versions. The JSON record has them.