google · copybara-service · Dec 20, 2023 · Jun 3, 2023 · Aug 3, 2023 · Aug 14, 2023
diff --git a/community/detectors/papercut_ng_mf_CVE_2023_27350/README.md b/community/detectors/papercut_ng_mf_CVE_2023_27350/README.md
@@ -0,0 +1,56 @@
+# Papercut NG/MF Authentication Bypass and RCE Detector
+
+
+### CVE
+[CVE-2023-27350](https://github.com/advisories/GHSA-cfg6-7x4x-p3pj)
+
+### Description of Vulnerability
+Allows remote attackers to bypass authentication
+on affected installations of PaperCut NG/MF. Authentication is not required to exploit this vulnerability. 
+The specific flaw exists within the SetupCompleted class and the issue results from improper access control
+An attacker can leverage this vulnerability to bypass authentication and execute arbitrary code in the context of SYSTEM (Windows) or Root/Papercut User (Linux).
+
+Application allows for Remote Code Execution on the webserver. The RCE can be used to directly execute commands on the remote Papercut Webserver, or a malicious JAR file can be dropped/executed.
+
+##### Related Articles:
+
+https://vulncheck.com/blog/papercut-rce
+https://www.bleepingcomputer.com/news/security/new-papercut-rce-exploit-created-that-bypasses-existing-detections/
+https://thehackernews.com/2023/05/researchers-uncover-new-exploit-for.html
+
+## Build jar file for this plugin
+
+Using `gradlew`:
+
+```shell
+./gradlew jar
+```
+
+Tsunami identifiable jar file is located at `build/libs` directory.
+
+---
+
+## Testing
+Images and OCI image sources to test this plugin can be found at: 
+https://github.com/Isaac-GC/papercut_ng_mf_docker_images
+
+These images simulate a near realistic production environment and are prebuilt/preconfigured to let you get started ASAP.
+They currently consist of two version types:
+- Vulnerable
+  - `ghcr.io/isaac-gc/papercut_ng_mf:19.2.7.62195`
+  - `ghcr.io/isaac-gc/papercut_ng_mf:20.1.4.57927`
+  - `ghcr.io/isaac-gc/papercut_ng_mf:21.2.10.62186`
+  - `ghcr.io/isaac-gc/papercut_ng_mf:22.0.1.62695`
+
+
+- Non-vulnerable (patched)
+  - `ghcr.io/isaac-gc/papercut_ng_mf:20.1.8.66704`
+  - `ghcr.io/isaac-gc/papercut_ng_mf:21.2.12.66701`
+  - `ghcr.io/isaac-gc/papercut_ng_mf:22.0.12.66453`
+
+#### Using the images
+1. Pull down an OCI image for the version you want to use/test. 
+   - i.e. `docker pull ghcr.io/isaac-gc/papercut_ng_mf:22.0.1.62695`
+2. Run the container using docker, kubernetes, or another OCI compatible engine
+   - I.e. using docker: `docker run -it --rm -p 9191:9191 ghcr.io/isaac-gc/papercut_ng_mf:22.0.1.62695`
+3. Thats it
diff --git a/community/detectors/papercut_ng_mf_CVE_2023_27350/build.gradle b/community/detectors/papercut_ng_mf_CVE_2023_27350/build.gradle
@@ -0,0 +1,66 @@
+plugins {
+    id 'java-library'
+}
+
+description = 'Tsunami example VulnDetector plugin with payload generator.'
+group = 'com.google.tsunami'
+version = '0.0.1-SNAPSHOT'
+
+repositories {
+    maven { // The google mirror is less flaky than mavenCentral()
+        url 'https://maven-central.storage-download.googleapis.com/repos/central/data/'
+    }
+    mavenCentral()
+    mavenLocal()
+}
+
+java {
+    sourceCompatibility = JavaVersion.VERSION_11
+    targetCompatibility = JavaVersion.VERSION_11
+
+    jar.manifest {
+        attributes('Implementation-Title': name,
+                'Implementation-Version': version,
+                'Built-By': System.getProperty('user.name'),
+                'Built-JDK': System.getProperty('java.version'),
+                'Source-Compatibility': sourceCompatibility,
+                'Target-Compatibility': targetCompatibility)
+    }
+
+    javadoc.options {
+        encoding = 'UTF-8'
+        use = true
+        links 'https://docs.oracle.com/javase/8/docs/api/'
+    }
+
+    // Log stacktrace to console when test fails.
+    test {
+        testLogging {
+            exceptionFormat = 'full'
+            showExceptions true
+            showCauses true
+            showStackTraces true
+        }
+        maxHeapSize = '1500m'
+    }
+}
+
+ext {
+    tsunamiVersion = '0.0.14'
+    junitVersion = '4.13'
+    mockitoVersion = '2.28.2'
+    truthVersion = '1.0.1'
+}
+
+dependencies {
+    implementation "com.google.tsunami:tsunami-common:${tsunamiVersion}"
+    implementation "com.google.tsunami:tsunami-plugin:${tsunamiVersion}"
+    implementation "com.google.tsunami:tsunami-proto:${tsunamiVersion}"
+    implementation 'com.google.code.gson:gson:2.10.1'
+
+    testImplementation "junit:junit:${junitVersion}"
+    testImplementation "org.mockito:mockito-core:${mockitoVersion}"
+    testImplementation "com.google.truth:truth:${truthVersion}"
+    testImplementation "com.google.truth.extensions:truth-java8-extension:${truthVersion}"
+    testImplementation "com.google.truth.extensions:truth-proto-extension:${truthVersion}"
+}
diff --git a/community/detectors/papercut_ng_mf_CVE_2023_27350/gradle/wrapper/gradle-wrapper.jar b/community/detectors/papercut_ng_mf_CVE_2023_27350/gradle/wrapper/gradle-wrapper.jar
diff --git a/community/detectors/papercut_ng_mf_CVE_2023_27350/gradle/wrapper/gradle-wrapper.properties b/community/detectors/papercut_ng_mf_CVE_2023_27350/gradle/wrapper/gradle-wrapper.properties
@@ -0,0 +1,5 @@
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-6.5-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists
diff --git a/community/detectors/papercut_ng_mf_CVE_2023_27350/gradlew b/community/detectors/papercut_ng_mf_CVE_2023_27350/gradlew
@@ -0,0 +1,185 @@
+#!/usr/bin/env sh
+
+#
+# Copyright 2015 the original author or authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+##############################################################################
+##
+##  Gradle start up script for UN*X
+##
+##############################################################################
+
+# Attempt to set APP_HOME
+# Resolve links: $0 may be a link
+PRG="$0"
+# Need this for relative symlinks.
+while [ -h "$PRG" ] ; do
+    ls=`ls -ld "$PRG"`
+    link=`expr "$ls" : '.*-> \(.*\)$'`
+    if expr "$link" : '/.*' > /dev/null; then
+        PRG="$link"
+    else
+        PRG=`dirname "$PRG"`"/$link"
+    fi
+done
+SAVED="`pwd`"
+cd "`dirname \"$PRG\"`/" >/dev/null
+APP_HOME="`pwd -P`"
+cd "$SAVED" >/dev/null
+
+APP_NAME="Gradle"
+APP_BASE_NAME=`basename "$0"`
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD="maximum"
+
+warn () {
+    echo "$*"
+}
+
+die () {
+    echo
+    echo "$*"
+    echo
+    exit 1
+}
+
+# OS specific support (must be 'true' or 'false').
+cygwin=false
+msys=false
+darwin=false
+nonstop=false
+case "`uname`" in
+  CYGWIN* )
+    cygwin=true
+    ;;
+  Darwin* )
+    darwin=true
+    ;;
+  MINGW* )
+    msys=true
+    ;;
+  NONSTOP* )
+    nonstop=true
+    ;;
+esac
+
+CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
+
+
+# Determine the Java command to use to start the JVM.
+if [ -n "$JAVA_HOME" ] ; then
+    if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
+        # IBM's JDK on AIX uses strange locations for the executables
+        JAVACMD="$JAVA_HOME/jre/sh/java"
+    else
+        JAVACMD="$JAVA_HOME/bin/java"
+    fi
+    if [ ! -x "$JAVACMD" ] ; then
+        die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD="java"
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then
+    MAX_FD_LIMIT=`ulimit -H -n`
+    if [ $? -eq 0 ] ; then
+        if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then
+            MAX_FD="$MAX_FD_LIMIT"
+        fi
+        ulimit -n $MAX_FD
+        if [ $? -ne 0 ] ; then
+            warn "Could not set maximum file descriptor limit: $MAX_FD"
+        fi
+    else
+        warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT"
+    fi
+fi
+
+# For Darwin, add options to specify how the application appears in the dock
+if $darwin; then
+    GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\""
+fi
+
+# For Cygwin or MSYS, switch paths to Windows format before running java
+if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then
+    APP_HOME=`cygpath --path --mixed "$APP_HOME"`
+    CLASSPATH=`cygpath --path --mixed "$CLASSPATH"`
+
+    JAVACMD=`cygpath --unix "$JAVACMD"`
+
+    # We build the pattern for arguments to be converted via cygpath
+    ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null`
+    SEP=""
+    for dir in $ROOTDIRSRAW ; do
+        ROOTDIRS="$ROOTDIRS$SEP$dir"
+        SEP="|"
+    done
+    OURCYGPATTERN="(^($ROOTDIRS))"
+    # Add a user-defined pattern to the cygpath arguments
+    if [ "$GRADLE_CYGPATTERN" != "" ] ; then
+        OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)"
+    fi
+    # Now convert the arguments - kludge to limit ourselves to /bin/sh
+    i=0
+    for arg in "$@" ; do
+        CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -`
+        CHECK2=`echo "$arg"|egrep -c "^-"`                                 ### Determine if an option
+
+        if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then                    ### Added a condition
+            eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"`
+        else
+            eval `echo args$i`="\"$arg\""
+        fi
+        i=`expr $i + 1`
+    done
+    case $i in
+        0) set -- ;;
+        1) set -- "$args0" ;;
+        2) set -- "$args0" "$args1" ;;
+        3) set -- "$args0" "$args1" "$args2" ;;
+        4) set -- "$args0" "$args1" "$args2" "$args3" ;;
+        5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;;
+        6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;;
+        7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;;
+        8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;;
+        9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;;
+    esac
+fi
+
+# Escape application args
+save () {
+    for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done
+    echo " "
+}
+APP_ARGS=`save "$@"`
+
+# Collect all arguments for the java command, following the shell quoting and substitution rules
+eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS"
+
+exec "$JAVACMD" "$@"