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Apache Log4j2 远程代码执行漏洞

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    前天 09:20
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    发表于 2021-12-15 10:10:25 | 只看该作者 |只看大图 回帖奖励 |倒序浏览 |阅读模式
    漏洞描述

    Apache Log4j2 是一个基于 Java 的日志记录工具。该工具重写了 Log4j 框架,并且引入了大量丰富的特性。该日志框架被大量用于业务系统开发,用来记录日志信息。

    在大多数情况下,开发者可能会将用户输入导致的错误信息写入日志中。攻击者利用此特性可通过该漏洞构造特殊的数据请求包,最终触发远程代码执行。由于该漏洞影响范围极广,建议广大用户及时排查相关漏洞,经过白帽汇安全研究院分析确认,目前市面有多款流行的系统都受影响。

    该漏洞危害等级:严重

    影响范围

    Apache Log4j 2.x < 2.15.0-rc2

    已知影响组件
    • Apache Struts2
    • Apache Solr
    • Apache Flink
    • Apache Druid
    • flume
    • dubbo
    • logstash
    • VMware Horizon
    • VMware vCenter Server
    • VMware HCX
    • VMware NSX-T Data Center
    • VMware Unified Access Gateway
    • VMware WorkspaceOne Access
    • VMware Identity Manager`
    • VMware vRealize Operations
    • VMware vRealize Operations Cloud Proxy
    • VMware vRealize Log Insight
    • VMware vRealize Automation
    • VMware vRealize Lifecycle Manager
    • VMware Telco Cloud Automation
    • VMware Site Recovery Manager
    • VMware Carbon Black Cloud Workload Appliance
    • VMware Carbon Black EDR Server
    • VMware Tanzu GemFire
    • VMware Tanzu Greenplum
    • VMware Tanzu Operations Manager
    • VMware Tanzu Application Service for VMs
    • VMware Tanzu Kubernetes Grid Integrated Edition
    • VMware Tanzu Observability by Wavefront Nozzle
    • Healthwatch for Tanzu Application Service
    • Spring Cloud Services for VMware Tanzu
    • Spring Cloud Gateway for VMware Tanzu
    • Spring Cloud Gateway for Kubernetes
    • API Portal for VMware Tanzu
    • Single Sign-On for VMware Tanzu Application Service
    • App Metrics
    • VMware vCenter Cloud Gateway
    • VMware Tanzu SQL with MySQL for VMs
    • VMware vRealize Orchestrator
    • VMware Cloud Foundation
    • VMware Workspace ONE Access Connector
    • VMware Horizon DaaS
    • VMware Horizon Cloud Connector0 U/ n) S1 C9 b) K" E. B
    受影响开源组件
    项目
    仓库地址
    版本

    . P4 R3 a9 l) e+ {elasticsearch(org.elasticsearch)https://github.com/elastic/elasticsearch8.0.0-alpha2 等(共 100 个)( q6 y8 b4 T0 V3 L% P: a
    spring-webflux(org.springframework)https://github.com/spring-projects/spring-framework5.2.6.RELEASE 等(共 40 个)' z, Y3 S6 P0 g. i( w' x
    druid(com.alibaba)https://github.com/alibaba/druid1.2.8 等(共 68 个)
    $ h& i9 @6 x0 ]& ahystrix-rx-netty-metrics-stream(com.netflix.hystrix)https://github.com/Netflix/Hystrix1.5.4 等(共 2 个)
    7 }* R! W9 _6 _) c% H& q8 U2 e1 ~8 Dspring-cloud-starter-alibaba-sentinel(com.alibaba.cloud)https://github.com/alibaba/spring-cloud-alibaba2021.1 等(共 14 个)& p+ X1 U# a: ^" i/ F5 E
    spring-boot-starter-ahas-sentinel-client(com.alibaba.csp)https://github.com/alibaba/Sentinel1.3.2 等(共 17 个)
      _  l( I3 L5 b2 x$ qredisson(org.redisson)https://github.com/redisson/redisson2.2.24 等(共 3 个)2 y- J7 z) F1 ]7 X# ?" b
    HikariCP(com.zaxxer)https://github.com/brettwooldridge/HikariCP5.0.0 等(共 27 个)3 W8 F8 ~4 [3 k
    zipkin-collector-service(io.zipkin)https://github.com/openzipkin/zipkin1.40.2 等(共 27 个)
    ! A; k7 V/ ^3 E( L; d: Bmybatis-plus(com.baomidou)https://github.com/baomidou/mybatis-plus3.4.3.4 等(共 41 个)# @4 ?: p" o% y; N
    zuul-sample(com.netflix.zuul)https://github.com/Netflix/zuul2.3.0 等(共 10 个)
    2 Q( \6 y" o  G0 s; L$ T. \watson-data-api-client(com.ibm.watson.data)https://github.com/OpenAPITools/openapi-generator0.1 等(共 1 个)
      Z$ w* @: W8 M! e" ispring-boot-admin-sample-consul(de.codecentric)https://github.com/codecentric/spring-boot-admin2.5.4 等(共 40 个)
    7 Z3 W) z8 q: r' Pjedis(redis.clients)https://github.com/redis/jedisjedis-3.6.2 等(共 36 个)
    . b- u+ V+ L4 g" ?& ~% W' X& R* egrpc-benchmarks(io.grpc)https://github.com/grpc/grpc-java1.9.1 等(共 65 个)
    + O5 z7 D4 B- x( I  }7 M4 \, I3 ektor-client-json-tests(io.ktor)https://github.com/ktorio/ktor1.6.7 等(共 32 个)5 f) G" T; L. ]( S  A& _( P
    gitbucket_2.13(io.github.gitbucket)https://github.com/gitbucket/gitbucket4.32.0 等(共 27 个)! |- d1 e2 r! b9 i. h+ E
    finagle-zipkin_2.12(com.twitter)https://github.com/twitter/finagle7.1.0 等(共 56 个)
    6 H8 {7 @. D4 cresilience4j-vertx(io.github.resilience4j)https://github.com/resilience4j/resilience4j0.9.0 等(共 9 个)
    9 `2 j: ]  V+ X9 h+ velasticsearch-sql(org.nlpcn)https://github.com/NLPchina/elasticsearch-sql6.8.13.0 等(共 9 个); Y, z5 g6 L) i$ m8 O
    exposed-spring-boot-starter(org.jetbrains.exposed)https://github.com/JetBrains/Exposed0.36.2 等(共 11 个)" G  k* c2 s% k* q8 R9 y4 Y
    blade-sql2o(com.bladejava)https://github.com/lets-blade/blade1.2.9 等(共 1 个)
    ) v7 n% [6 b" h6 fnetty-socketio(com.corundumstudio.socketio)https://github.com/mrniko/netty-socketio1.7.19 等(共 8 个)) I% P( r# `9 H$ W: D" Y
    springfox-swagger2(io.springfox)https://github.com/springfox/springfox2.10.5 等(共 6 个)! a9 Q0 T9 \' a# N
    main_2.12(org.scala-sbt)https://github.com/sbt/sbt1.6.0-RC1 等(共 88 个)( @- O! Y# u- A; _& }( C4 q
    lettuce-core(io.lettuce)https://github.com/lettuce-io/lettuce-core6.1.5.RELEASE 等(共 42 个)
    " ?/ }0 z# \( H5 Mrepository-azure(org.opensearch.plugin)https://github.com/opensearch-project/OpenSearch1.2.0 等(共 3 个)/ X; m7 X# X2 P8 J5 u
    reactor-test(io.projectreactor)https://github.com/reactor/reactor-core3.3.4.RELEASE 等(共 3 个)
    7 {/ i+ r1 ~# k% z6 b' Dcorda-webserver-impl(net.corda)https://github.com/corda/cordacorda-3.0 等(共 32 个)6 x, m" }( I1 s: o$ {7 h# T
    conductor-redis-persistence(com.netflix.conductor)https://github.com/Netflix/conductor3.3.6 等(共 100 个)6 g  F& r2 Y6 z9 g2 c
    armeria(com.linecorp.armeria)https://github.com/line/armeria0.26.1.Final 等(共 2 个)
    - u+ O; O; d9 C6 a. H7 @2 hbreeze-parent_2.13(org.scalanlp)https://github.com/scalanlp/breeze2.0.1-RC1 等(共 5 个)
    7 f* P! [: Q' A2 g' ?% \: [' Umicrometer-core(io.micrometer)https://github.com/micrometer-metrics/micrometer1.8.1 等(共 98 个)' h- c6 ^" w- p/ ~+ @7 k4 Q
    alink_connector_jdbc_sqlite_flink-1.9_2.11(com.alibaba.alink)https://github.com/alibaba/Alink1.5.1 等(共 3 个)
    0 w# _3 y) e# ^, B1 D+ einitializr-actuator(io.spring.initializr)https://github.com/spring-io/initializr0.9.0 等(共 6 个)6 ~" c/ `% V* f2 p* u
    telegrambots-spring-boot-starter(org.telegram)https://github.com/rubenlagus/TelegramBots4.9.1 等(共 17 个)1 e9 T$ o* P2 s
    spring-data-elasticsearch(org.springframework.data)https://github.com/spring-projects/spring-data-elasticsearch4.3.0 等(共 86 个)
    2 H1 f) v. Q- Q2 B- G0 r+ D/ cfeast-common(dev.feast)https://github.com/feast-dev/feast0.9.2 等(共 26 个)9 N% w+ [. B8 t9 K
    javamelody-core(net.bull.javamelody)https://github.com/javamelody/javamelody1.88.0 等(共 13 个)
    4 o' }' U7 `! U- Oanalytics-zoo-bigdl_0.13.0-spark_3.0.0(com.intel.analytics.zoo)https://github.com/intel-analytics/analytics-zoo0.11.0-RC1 等(共 4 个)8 u; |9 _* a$ T( y+ d% P( t
    scio-tensorflow_2.13(com.spotify)https://github.com/spotify/scio0.9.6 等(共 97 个)
    . s7 f  }9 R4 x/ E, c+ igrpc-client-spring-boot-autoconfigure(net.devh)https://github.com/yidongnan/grpc-spring-boot-starter2.9.0.RELEASE 等(共 16 个)
    , ?* w+ [; }% E! b' e$ ^  ]inject-server_2.12(com.twitter)https://github.com/twitter/finatra21.9.0 等(共 56 个)2 Y8 Q! a! I7 t8 C2 i
    client-java-examples(io.kubernetes)https://github.com/kubernetes-client/java8.0.2 等(共 1 个)
    * y2 I! T% L$ W2 Treactivesocket-tck-drivers(io.reactivesocket)https://github.com/rsocket/rsocket-java0.6.0 等(共 1 个)
    9 |& A- U- ~' D: r- djest-droid(io.searchbox)https://github.com/searchbox-io/Jest6.3.1 等(共 8 个)+ a# Q2 A+ S5 U4 x
    graphql-dgs-example-java-webflux(com.netflix.graphql.dgs)https://github.com/Netflix/dgs-framework4.9.7 等(共 36 个)
    ' h) x% C% ?- o0 vquill-jdbc-monix_2.11(io.getquill)https://github.com/getquill/quill3.9.0 等(共 62 个)0 l/ ]! `9 p2 M: e9 n( W, g
    doobie-quill_2.12(org.tpolecat)https://github.com/tpolecat/doobie1.0.0-RC1 等(共 61 个)
    3 B3 A0 J0 X: O+ L. Xhttp4k(org.http4k)https://github.com/http4k/http4k4.3.4.1 等(共 3 个)
    : M$ ?' p2 t7 y2 Z" o, j7 k4 B% \elasticsearch-hadoop(org.elasticsearch)https://github.com/elastic/elasticsearch-hadoop8.0.0-beta1 等(共 100 个)
    : ?: x  ?- O: ?* xsbt-shading(io.get-coursier)https://github.com/coursier/coursier1.0.0-RC8 等(共 1 个)2 v9 b2 }9 A% b1 A! i2 r
    spark-cassandra-connector-unshaded_2.10(com.datastax.spark)https://github.com/datastax/spark-cassandra-connector2.0.9 等(共 54 个)
    ' i/ S' h% m1 R9 B9 Zwebdrivermanager(io.github.bonigarcia)https://github.com/bonigarcia/webdrivermanager4.0.0 等(共 15 个)
    7 k1 |* ?- D6 a4 M! K: Ocommon-auth-v3(com.tencent.bk.devops.ci.common)https://github.com/Tencent/bk-ci1.2.0-rc.7-RELEASE 等(共 3 个)' G! Y: s- [6 a" K
    reactor-netty(io.projectreactor.netty)https://github.com/reactor/reactor-netty1.0.9 等(共 75 个)4 A% r! r/ ]% L' t. K
    evcache-client-sample(com.netflix.evcache)https://github.com/Netflix/EVCache5.18.9 等(共 63 个)
    / g1 J1 m$ U( }$ p6 xxtdb-test(com.xtdb)https://github.com/xtdb/xtdb1.20.0 等(共 9 个)
    , J6 j% c9 U7 e7 c4 v2 c8 y5 `transport-netty4(com.strapdata.elasticsearch.plugin)https://github.com/strapdata/elassandra6.2.3.31 等(共 14 个)
    # {, k2 B9 b# q$ @, k' Rsbt-metals(org.scalameta)https://github.com/scalameta/metals0.9.9 等(共 17 个)
    2 H$ i8 K/ S/ Jelastic4s-embedded_2.12(com.sksamuel.elastic4s)https://github.com/sksamuel/elastic4s6.7.8 等(共 100 个)
    % L; E. _" d2 h  u( w/ vgenie-agent(com.netflix.genie)https://github.com/Netflix/genie4.0.4 等(共 100 个)( u5 X3 E+ u: b0 z
    spring-kafka(org.springframework.kafka)https://github.com/spring-projects/spring-kafka2.7.9 等(共 79 个)
    ! @: ^$ {' u' c0 Sdb-async-common_2.13(com.dripower)https://github.com/mauricio/postgresql-async0.3.109 等(共 19 个)
    & r& s6 a& i; v( T, W( p- q# I& r/ Wselenide(com.codeborne)https://github.com/selenide/selenide5.25.0-selenium-4.0.0-rc-2 等(共 18 个)1 R( r8 U. [+ j: O
    cloudfoundry-identity-server(org.cloudfoundry.identity)https://github.com/cloudfoundry/uaa4.30.0 等(共 1 个)3 I' b1 f0 p; D- _3 d. F* b
    servo-atlas(com.netflix.servo)https://github.com/Netflix/servo0.13.2 等(共 20 个)
    : v% Q- [0 l: [5 a4 q% S) ~$ Drxnetty-spectator-tcp(io.reactivex)https://github.com/ReactiveX/RxNetty0.5.3-rc.4 等(共 12 个)2 ?2 \; a+ x, w% Z
    mleap-tensorflow_2.10(ml.combust.mleap)https://github.com/combust/mleap0.9.6 等(共 25 个)
    ( \8 L* f3 h0 W8 ~spark-testing-base_2.12(com.holdenkarau)https://github.com/holdenk/spark-testing-base2.4.4_1.1.1 等(共 100 个)  i  O3 n# b" _0 N) N/ `
    graphql-kotlin-spring-client(com.expediagroup)https://github.com/ExpediaGroup/graphql-kotlin5.0.0-alpha.0 等(共 20 个)
    3 |" b' l) Q, b- a/ J" ngraphql-spring-boot-test-autoconfigure(com.graphql-java-kickstart)https://github.com/graphql-java-kickstart/graphql-spring-boot8.1.1 等(共 33 个)
    $ l' K8 C; i, _! w& Vdiscord4j-rest(com.discord4j)https://github.com/Discord4J/Discord4J3.2.1 等(共 15 个)
    2 f* `) g/ c( `( I$ C6 Ktwitter-server-logback-classic_2.13(com.twitter)https://github.com/twitter/twitter-server21.9.0 等(共 54 个)
    , K1 R/ A  Y: n2 p) ]! ssynthea(org.mitre.synthea)https://github.com/synthetichealth/synthea2.7.0 等(共 2 个)
    9 u( e! c/ L' r0 |spring-integration-redis(org.springframework.integration)https://github.com/spring-projects/spring-integration5.5.6 等(共 30 个)
    0 ^$ V8 u9 Y5 v) W% kcyclops-reactor-integration(com.oath.cyclops)https://github.com/aol/cyclops10.4.0 等(共 1 个)
    0 @9 T" E+ r, I) P9 w) G! Hakka-stream-alpakka-geode_2.12(com.lightbend.akka)https://github.com/akka/alpakka1.0-M1 等(共 13 个)$ B: k( E2 F. v4 L/ @* G7 k7 A( @
    mantis-client(io.mantisrx)https://github.com/Netflix/mantis1.3.9 等(共 83 个). ^, y1 ^6 a; Z3 x
    mybatis-generator-plugin(com.itfsw)https://github.com/itfsw/mybatis-generator-plugin1.2.9 等(共 31 个)# A7 |4 s. ]( R" X( z5 q
    ktorm-support-sqlserver(org.ktorm)https://github.com/kotlin-orm/ktorm3.3.0 等(共 11 个)& H5 `& V7 Z% E/ ^# p8 a) b
    gatk(org.broadinstitute)https://github.com/broadinstitute/gatk4.beta.2 等(共 39 个)
    2 P3 D2 f& i5 }, k( B; R: `: Sazure-messaging-servicebus(com.azure)https://github.com/Azure/azure-sdk-for-java7.5.1 等(共 100 个)6 R" k% f0 r9 Z" K- c/ q. s
    mica-metrics(net.dreamlu)https://github.com/lets-mica/mica2.5.7 等(共 7 个)) R9 p8 l$ ~7 B6 o4 k
    shiro-redis(org.crazycake)https://github.com/alexxiyang/shiro-redis3.3.1 等(共 2 个)
    ; A9 @, Q8 L* P- {enumeratum-play_2.12(com.beachape)https://github.com/lloydmeta/enumeratum1.5.16 等(共 2 个)
    ' O2 U2 U6 w# yjdonframework(org.jdon)https://github.com/banq/jdonframework6.6.8 等(共 1 个)
    , f, ]8 T9 g9 W5 e  lweid-java-sdk(com.webank)https://github.com/WeBankBlockchain/WeIdentity1.8.1 等(共 3 个)
    + g4 ^0 |5 ]* x% K$ ]& J) r" Wlog-protocol(io.shulie.pradar)https://github.com/shulieTech/Takin2.0.3 等(共 3 个)* k$ f. {/ B" K$ \
    micro-boot(com.oath.microservices)https://github.com/aol/micro-server1.2.6 等(共 38 个)
    5 s1 B7 P/ `$ I4 j, ~sparkling-water-package_2.11(ai.h2o)https://github.com/h2oai/sparkling-water2.4.10 等(共 36 个)
    + r. ?& v) _$ @0 @: S! ^" ascalatest_2.13(au.com.dius.pact.provider)https://github.com/pact-foundation/pact-jvm4.2.4 等(共 5 个), K7 y: e/ [0 q3 b7 s1 T% C
    mssql-jdbc(com.microsoft.sqlserver)https://github.com/microsoft/mssql-jdbc8.3.0.jre11-preview 等(共 100 个)
    * D3 a, X7 G- ?. S  selide-spring-boot-starter(com.yahoo.elide)https://github.com/yahoo/elide6.0.3 等(共 45 个)
    7 z; @% o9 q4 E2 Rkafka-connect-elastic5(com.datamountaineer)https://github.com/lensesio/stream-reactor1.2.0 等(共 5 个)
    2 b0 W* ^# H# W$ O1 Ikvision-server-spring-boot-jvm(io.kvision)https://github.com/rjaros/kvision5.4.3 等(共 9 个)
    2 B6 m: y1 o* P- P, ]+ f* G/ l1 nr2dbc-postgresql(org.postgresql)https://github.com/pgjdbc/r2dbc-postgresql0.9.0.RC1 等(共 8 个)+ H& U* Y6 i/ E1 g4 e7 P
    play-slick-evolutions_2.13(com.typesafe.play)https://github.com/playframework/play-slick5.0.0-RC3 等(共 29 个)- l9 \8 t" z1 n) o# j6 W1 R# v8 S
    sbt-bloop-core(ch.epfl.scala)https://github.com/scalacenter/bloop1.4.8-43-c2d941d9 等(共 29 个)
    ' D) i, G4 m) S6 Jjcseg-elasticsearch(org.lionsoul)https://github.com/lionsoul2014/jcseg2.6.2 等(共 7 个)

    更多受影响组件查询,请点击以下链接查询:https://log4j2.huoxian.cn/

    漏洞排查

    代码排查:查看 pom.xml 是否引入 org.apache.logging.log4j、org.apache.logging.log4j2

    Linux:

    sudo find / -name "*log4j-*.jar"

    Windows:

    *log4j*.jar

    攻击排查

    日志排查:

    攻击者在利用前通常采用dnslog方式进行扫描、探测,对于常见利用方式可通过应用系统报错日志中的

    "javax.naming.CommunicationException"

    "javax.naming.NamingException: problem generating object using object factory"

    "Error looking up JNDI resource"关键字进行排查。

    流量排查:

    攻击者的数据包中可能存在:“${jndi:rmi”、“${jndi:ldap”字样,可根据此类关键字进行排查。

    漏洞复现

    Vulfocus 靶场环境

    目前 Vulfocus 已经集成 Log4j2 环境,可通过以下链接启动环境测试:

    http://vulfocus.fofa.so/#/dashboard?image_id=3b8f15eb-7bd9-49b2-a69e-541f89c4216c

    也可通过 docker pull vulfocus/log4j2-rce-2021-12-09:latest 拉取本地环境运行,本地启动命令:docker run -d -P vulfocus/log4j2-rce-2021-12-09:latest

    修复建议

    1、禁止使用 log4j 服务器外连,升级 idk 11.0.1 8u191 7u201 6u211 或更高版本。

    2、升级至 log4j-2.15.0-rc2:

         下载地址:https://github.com/apache/logging-log4j2/releases/tag/log4j-2.15.0-rc2

    3、紧急缓解措施:

    (1) 修改 jvm 参数 -Dlog4j2.formatMsgNoLookups=true

    (2) 修改配置 log4j2.formatMsgNoLookups=True

    (3) 将系统环境变量 FORMAT_MESSAGES_PATTERN_DISABLE_LOOKUPS 设置 为 true

    参考

    [1] https://github.com/apache/logging-log4j2/releases/tag/log4j-2.15.0-rc1

    [2] [LOG4J2-3201] Limit the protocols jNDI can use and restrict LDAP. - ASF JIRA (apache.org)

    [3] ASF Git Repos - logging-log4j2.git/blob - log4j-core/src/test/java/org/apache/logging/log4j/core/lookup/JndiRestrictedLookupTest.java

    [4] https://mp.weixin.qq.com/s/wC7mrK1Y4DYz9_yW4fLzbw

    [5] https://help.aliyun.com/noticelist/articleid/1060971232.html

    [6] https://mp.weixin.qq.com/s/C4zeXHKHDqPeRuLytO7Fzw


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