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Disable Secure Client-Initiated Renegotiation by default

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The parameter  -Djdk.tls.rejectClientInitiatedRenegotiation=true disables Secure Client-Initiated Renegotiation in Keycloak to resolve a potential DoS vulnerability. Note this is applicable only to TLS 1.2.

Closes #43020

Signed-off-by: Erasure5959 <154384607+Erasure5959@users.noreply.github.com>
Signed-off-by: Alexander Schwartz <alexander.schwartz@ibm.com>
Co-authored-by: Alexander Schwartz <alexander.schwartz@ibm.com>
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Erasure5959 2025-10-01 16:35:29 +02:00 committed by GitHub
parent 1b789f1703
commit 3d9eb434b8
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2 changed files with 2 additions and 2 deletions
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2
quarkus/dist/src/main/content/bin/kc.bat vendored
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@ -102,7 +102,7 @@ if not "x%JAVA_OPTS%" == "x" (
rem If the memory is not used, it will be freed. See https://developers.redhat.com/blog/2017/04/04/openjdk-and-containers for details.
rem To optimize for large heap sizes or for throughput and better response time due to shorter GC pauses, consider ZGC and Shenandoah GC.
rem As of KC25 and JDK17, G1GC, ZGC and Shenandoah GC seem to be eager to claim the maximum heap size. Tests showed that ZGC might need additional tuning in reclaiming dead objects.
set "JAVA_OPTS=-XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.err.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dstderr.encoding=UTF-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/urandom -XX:+UseG1GC -XX:FlightRecorderOptions=stackdepth=512"
set "JAVA_OPTS=-XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.err.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dstderr.encoding=UTF-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/urandom -XX:+UseG1GC -XX:FlightRecorderOptions=stackdepth=512 -Djdk.tls.rejectClientInitiatedRenegotiation=true"
if "x%JAVA_OPTS_KC_HEAP%" == "x" (
if "!KC_RUN_IN_CONTAINER!" == "true" (

2
quarkus/dist/src/main/content/bin/kc.sh vendored
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@ -103,7 +103,7 @@ if [ -z "$JAVA_OPTS" ]; then
# If the memory is not used, it will be freed. See https://developers.redhat.com/blog/2017/04/04/openjdk-and-containers for details.
# To optimize for large heap sizes or for throughput and better response time due to shorter GC pauses, consider ZGC and Shenandoah GC.
# As of KC25 and JDK17, G1GC, ZGC and Shenandoah GC seem to be eager to claim the maximum heap size. Tests showed that ZGC might need additional tuning in reclaiming dead objects.
JAVA_OPTS="-XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.err.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dstderr.encoding=UTF-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/urandom -XX:+UseG1GC -XX:FlightRecorderOptions=stackdepth=512"
JAVA_OPTS="-XX:MetaspaceSize=96M -XX:MaxMetaspaceSize=256m -Dfile.encoding=UTF-8 -Dsun.stdout.encoding=UTF-8 -Dsun.err.encoding=UTF-8 -Dstdout.encoding=UTF-8 -Dstderr.encoding=UTF-8 -XX:+ExitOnOutOfMemoryError -Djava.security.egd=file:/dev/urandom -XX:+UseG1GC -XX:FlightRecorderOptions=stackdepth=512 -Djdk.tls.rejectClientInitiatedRenegotiation=true"
if [ -z "$JAVA_OPTS_KC_HEAP" ]; then
if [ "$KC_RUN_IN_CONTAINER" = "true" ]; then