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Apache Log4j2 远程代码执行漏洞

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  • TA的每日心情
    擦汗
    前天 08:38
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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 Connector9 w3 N7 H2 I% `& W/ o# `- n
    受影响开源组件
    项目
    仓库地址
    版本

    0 E0 q# E* l6 T, X6 F; H) Belasticsearch(org.elasticsearch)https://github.com/elastic/elasticsearch8.0.0-alpha2 等(共 100 个)4 {! \$ N( j5 W( L9 F3 v0 E
    spring-webflux(org.springframework)https://github.com/spring-projects/spring-framework5.2.6.RELEASE 等(共 40 个)
    % C' [. A( y6 M& _. P" _$ H1 cdruid(com.alibaba)https://github.com/alibaba/druid1.2.8 等(共 68 个)" j! K2 _& `; n
    hystrix-rx-netty-metrics-stream(com.netflix.hystrix)https://github.com/Netflix/Hystrix1.5.4 等(共 2 个)
    & }9 y0 Q% b/ g  u3 s$ P* Dspring-cloud-starter-alibaba-sentinel(com.alibaba.cloud)https://github.com/alibaba/spring-cloud-alibaba2021.1 等(共 14 个)
    - ^8 Y+ ^6 Y5 M" u2 sspring-boot-starter-ahas-sentinel-client(com.alibaba.csp)https://github.com/alibaba/Sentinel1.3.2 等(共 17 个)- u8 L' C8 H2 q# V9 L1 w5 D0 ^
    redisson(org.redisson)https://github.com/redisson/redisson2.2.24 等(共 3 个)2 T5 I& ^4 v- u1 v
    HikariCP(com.zaxxer)https://github.com/brettwooldridge/HikariCP5.0.0 等(共 27 个)
    2 I& u9 n8 K  x9 I, vzipkin-collector-service(io.zipkin)https://github.com/openzipkin/zipkin1.40.2 等(共 27 个)" W8 [# h, z" j6 f' ~
    mybatis-plus(com.baomidou)https://github.com/baomidou/mybatis-plus3.4.3.4 等(共 41 个)' H" V6 k$ F* Y  u0 K
    zuul-sample(com.netflix.zuul)https://github.com/Netflix/zuul2.3.0 等(共 10 个)" i+ o+ j$ Z/ ]; [" F# m" k
    watson-data-api-client(com.ibm.watson.data)https://github.com/OpenAPITools/openapi-generator0.1 等(共 1 个)
    7 A8 Q8 ], P8 z9 |spring-boot-admin-sample-consul(de.codecentric)https://github.com/codecentric/spring-boot-admin2.5.4 等(共 40 个)
    8 z/ G/ }4 g. f5 Ejedis(redis.clients)https://github.com/redis/jedisjedis-3.6.2 等(共 36 个)
    6 a- g7 G# z( O+ ngrpc-benchmarks(io.grpc)https://github.com/grpc/grpc-java1.9.1 等(共 65 个)
    : {0 O: e0 l3 q. Y+ `) F/ wktor-client-json-tests(io.ktor)https://github.com/ktorio/ktor1.6.7 等(共 32 个)
    + J' ?. G0 o3 r6 Z) v/ s- d. agitbucket_2.13(io.github.gitbucket)https://github.com/gitbucket/gitbucket4.32.0 等(共 27 个)0 ]9 O& ~$ z. T/ p( \
    finagle-zipkin_2.12(com.twitter)https://github.com/twitter/finagle7.1.0 等(共 56 个)
    / W# P6 u/ C% J- aresilience4j-vertx(io.github.resilience4j)https://github.com/resilience4j/resilience4j0.9.0 等(共 9 个)9 c/ j( a4 G. C# w; m
    elasticsearch-sql(org.nlpcn)https://github.com/NLPchina/elasticsearch-sql6.8.13.0 等(共 9 个); D; Z. m2 ?& g% e
    exposed-spring-boot-starter(org.jetbrains.exposed)https://github.com/JetBrains/Exposed0.36.2 等(共 11 个). Q% N3 y' U) h" E/ n2 g
    blade-sql2o(com.bladejava)https://github.com/lets-blade/blade1.2.9 等(共 1 个)
    + g! M) E# K; }. X% Fnetty-socketio(com.corundumstudio.socketio)https://github.com/mrniko/netty-socketio1.7.19 等(共 8 个)
    1 z, k( ^( P+ ~. q5 uspringfox-swagger2(io.springfox)https://github.com/springfox/springfox2.10.5 等(共 6 个); @* n$ J% h; n0 A0 F1 Y# X1 G5 U
    main_2.12(org.scala-sbt)https://github.com/sbt/sbt1.6.0-RC1 等(共 88 个); A7 Y" I6 W5 l- [& |
    lettuce-core(io.lettuce)https://github.com/lettuce-io/lettuce-core6.1.5.RELEASE 等(共 42 个)
    5 S) S8 N0 G( l* K) Frepository-azure(org.opensearch.plugin)https://github.com/opensearch-project/OpenSearch1.2.0 等(共 3 个)3 b* d# |) e) x' ?+ b# W7 N
    reactor-test(io.projectreactor)https://github.com/reactor/reactor-core3.3.4.RELEASE 等(共 3 个)
    0 C2 [9 {* m6 n/ _% v  [7 Ocorda-webserver-impl(net.corda)https://github.com/corda/cordacorda-3.0 等(共 32 个)
    8 n0 {! T. f: ]1 O/ e2 z! Z4 H/ jconductor-redis-persistence(com.netflix.conductor)https://github.com/Netflix/conductor3.3.6 等(共 100 个)& d) t( [5 `7 b5 e3 S
    armeria(com.linecorp.armeria)https://github.com/line/armeria0.26.1.Final 等(共 2 个)
    & V+ l8 a$ r  O1 bbreeze-parent_2.13(org.scalanlp)https://github.com/scalanlp/breeze2.0.1-RC1 等(共 5 个)
    7 Q8 w$ {' F4 R# c5 Z0 Y0 ^2 _micrometer-core(io.micrometer)https://github.com/micrometer-metrics/micrometer1.8.1 等(共 98 个)
    + p7 y% E+ M& k5 J- g. @alink_connector_jdbc_sqlite_flink-1.9_2.11(com.alibaba.alink)https://github.com/alibaba/Alink1.5.1 等(共 3 个)! Z: _& ~) K+ T; ?
    initializr-actuator(io.spring.initializr)https://github.com/spring-io/initializr0.9.0 等(共 6 个)
    + k" _, k. }  q- k& e( I! E1 l0 htelegrambots-spring-boot-starter(org.telegram)https://github.com/rubenlagus/TelegramBots4.9.1 等(共 17 个)
    ' |/ w/ J6 x3 Ospring-data-elasticsearch(org.springframework.data)https://github.com/spring-projects/spring-data-elasticsearch4.3.0 等(共 86 个): g1 B7 j4 O7 ^% d
    feast-common(dev.feast)https://github.com/feast-dev/feast0.9.2 等(共 26 个)
    & k# D2 l* C9 _: o) c4 sjavamelody-core(net.bull.javamelody)https://github.com/javamelody/javamelody1.88.0 等(共 13 个)2 A" t( i* m) w7 O
    analytics-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)( p# Q+ T7 N2 \( G3 @% U  m1 h" n
    scio-tensorflow_2.13(com.spotify)https://github.com/spotify/scio0.9.6 等(共 97 个)
    $ s: e: U) s0 B' D  f5 f2 O/ b7 Dgrpc-client-spring-boot-autoconfigure(net.devh)https://github.com/yidongnan/grpc-spring-boot-starter2.9.0.RELEASE 等(共 16 个)0 Y+ o- c' h0 r
    inject-server_2.12(com.twitter)https://github.com/twitter/finatra21.9.0 等(共 56 个)
      F4 M, J* |& [) E- r5 N4 Zclient-java-examples(io.kubernetes)https://github.com/kubernetes-client/java8.0.2 等(共 1 个)
    1 I- m% [& R6 m7 q0 L! l, x& |0 q) lreactivesocket-tck-drivers(io.reactivesocket)https://github.com/rsocket/rsocket-java0.6.0 等(共 1 个)
    2 `& W+ }7 M9 I! d" a' _: U. sjest-droid(io.searchbox)https://github.com/searchbox-io/Jest6.3.1 等(共 8 个)
    , t* H- S0 @" R, L* s  ?graphql-dgs-example-java-webflux(com.netflix.graphql.dgs)https://github.com/Netflix/dgs-framework4.9.7 等(共 36 个)6 g  ?  g( N9 O& j* Q
    quill-jdbc-monix_2.11(io.getquill)https://github.com/getquill/quill3.9.0 等(共 62 个)
    % l& Q1 _: K7 p5 o5 _9 fdoobie-quill_2.12(org.tpolecat)https://github.com/tpolecat/doobie1.0.0-RC1 等(共 61 个)3 m3 N1 n0 N4 @; A; U# k& X
    http4k(org.http4k)https://github.com/http4k/http4k4.3.4.1 等(共 3 个)
    # l- u2 o" ?- Q2 b. _& Relasticsearch-hadoop(org.elasticsearch)https://github.com/elastic/elasticsearch-hadoop8.0.0-beta1 等(共 100 个)
    4 I4 G' R2 r7 Tsbt-shading(io.get-coursier)https://github.com/coursier/coursier1.0.0-RC8 等(共 1 个)! R1 g% o% @9 [& L6 {
    spark-cassandra-connector-unshaded_2.10(com.datastax.spark)https://github.com/datastax/spark-cassandra-connector2.0.9 等(共 54 个)
    * w9 N9 ]3 _. K6 b& M) nwebdrivermanager(io.github.bonigarcia)https://github.com/bonigarcia/webdrivermanager4.0.0 等(共 15 个)  a2 d* V- `1 T
    common-auth-v3(com.tencent.bk.devops.ci.common)https://github.com/Tencent/bk-ci1.2.0-rc.7-RELEASE 等(共 3 个)* R" H" ?; L8 ^' k; E) ^- ?
    reactor-netty(io.projectreactor.netty)https://github.com/reactor/reactor-netty1.0.9 等(共 75 个)
    - t0 x: L) J2 O( r3 j% `# \" Y& k6 devcache-client-sample(com.netflix.evcache)https://github.com/Netflix/EVCache5.18.9 等(共 63 个)9 ~- V, w$ k  E/ q  b( F7 Y4 s" W
    xtdb-test(com.xtdb)https://github.com/xtdb/xtdb1.20.0 等(共 9 个)0 L6 e7 b$ C4 {3 Q: g; E) S
    transport-netty4(com.strapdata.elasticsearch.plugin)https://github.com/strapdata/elassandra6.2.3.31 等(共 14 个)
    - y" p* Q1 s+ }: I1 d* Nsbt-metals(org.scalameta)https://github.com/scalameta/metals0.9.9 等(共 17 个)
    $ n3 b" b7 S+ [0 M5 uelastic4s-embedded_2.12(com.sksamuel.elastic4s)https://github.com/sksamuel/elastic4s6.7.8 等(共 100 个)
    : j& C4 u6 J  v/ y3 \- Qgenie-agent(com.netflix.genie)https://github.com/Netflix/genie4.0.4 等(共 100 个)( k2 d; w3 e& c0 f: S
    spring-kafka(org.springframework.kafka)https://github.com/spring-projects/spring-kafka2.7.9 等(共 79 个)) ~% J& w$ w: e
    db-async-common_2.13(com.dripower)https://github.com/mauricio/postgresql-async0.3.109 等(共 19 个)
    . ]5 O, |5 k9 c) l6 P/ F0 Bselenide(com.codeborne)https://github.com/selenide/selenide5.25.0-selenium-4.0.0-rc-2 等(共 18 个)& W" Z( [/ m' {4 `
    cloudfoundry-identity-server(org.cloudfoundry.identity)https://github.com/cloudfoundry/uaa4.30.0 等(共 1 个)
    % n: e3 T) n/ Pservo-atlas(com.netflix.servo)https://github.com/Netflix/servo0.13.2 等(共 20 个)
    5 x' ~+ E; [) s. H  _$ O( `rxnetty-spectator-tcp(io.reactivex)https://github.com/ReactiveX/RxNetty0.5.3-rc.4 等(共 12 个)9 M8 a7 R$ w) z. Z
    mleap-tensorflow_2.10(ml.combust.mleap)https://github.com/combust/mleap0.9.6 等(共 25 个)
    * d6 O! ~4 z. O" V% ?+ z2 q' ]4 Aspark-testing-base_2.12(com.holdenkarau)https://github.com/holdenk/spark-testing-base2.4.4_1.1.1 等(共 100 个)2 C8 [- P, a# q6 n% T
    graphql-kotlin-spring-client(com.expediagroup)https://github.com/ExpediaGroup/graphql-kotlin5.0.0-alpha.0 等(共 20 个)- L6 K  W' V3 g& @9 ?; M( v
    graphql-spring-boot-test-autoconfigure(com.graphql-java-kickstart)https://github.com/graphql-java-kickstart/graphql-spring-boot8.1.1 等(共 33 个)) u' m! b6 H7 \  v) E
    discord4j-rest(com.discord4j)https://github.com/Discord4J/Discord4J3.2.1 等(共 15 个)
    5 s- J7 H! d2 ^& F2 e* [8 Jtwitter-server-logback-classic_2.13(com.twitter)https://github.com/twitter/twitter-server21.9.0 等(共 54 个)
    ( ?" t2 s5 R- R" {! isynthea(org.mitre.synthea)https://github.com/synthetichealth/synthea2.7.0 等(共 2 个)
    , y4 O4 C- t: ^spring-integration-redis(org.springframework.integration)https://github.com/spring-projects/spring-integration5.5.6 等(共 30 个)
    * d; t* o4 h% K. V; [! w' K8 Ecyclops-reactor-integration(com.oath.cyclops)https://github.com/aol/cyclops10.4.0 等(共 1 个)1 w- _9 o: C- l* Y
    akka-stream-alpakka-geode_2.12(com.lightbend.akka)https://github.com/akka/alpakka1.0-M1 等(共 13 个)
    4 A/ r' B8 k8 v  emantis-client(io.mantisrx)https://github.com/Netflix/mantis1.3.9 等(共 83 个)
    6 n- Y7 a0 g+ d$ F- Wmybatis-generator-plugin(com.itfsw)https://github.com/itfsw/mybatis-generator-plugin1.2.9 等(共 31 个)3 O5 S" r8 G, e9 J! x1 F4 P1 F/ d3 h, h
    ktorm-support-sqlserver(org.ktorm)https://github.com/kotlin-orm/ktorm3.3.0 等(共 11 个)9 U& N$ m: T; p$ }4 a
    gatk(org.broadinstitute)https://github.com/broadinstitute/gatk4.beta.2 等(共 39 个)
    ' L/ e& A) S7 ?* S+ oazure-messaging-servicebus(com.azure)https://github.com/Azure/azure-sdk-for-java7.5.1 等(共 100 个)
    $ v+ M  Z3 _& w$ \- `) bmica-metrics(net.dreamlu)https://github.com/lets-mica/mica2.5.7 等(共 7 个)
    ( V5 {; N! W; H1 O( Nshiro-redis(org.crazycake)https://github.com/alexxiyang/shiro-redis3.3.1 等(共 2 个)) H( O; f% D$ `1 O% R) Q$ A
    enumeratum-play_2.12(com.beachape)https://github.com/lloydmeta/enumeratum1.5.16 等(共 2 个)
    4 q! M8 ?$ w$ A: Z3 T/ X. ljdonframework(org.jdon)https://github.com/banq/jdonframework6.6.8 等(共 1 个)) c' F4 }8 A5 {
    weid-java-sdk(com.webank)https://github.com/WeBankBlockchain/WeIdentity1.8.1 等(共 3 个)+ E6 o: N% H% `& @# q
    log-protocol(io.shulie.pradar)https://github.com/shulieTech/Takin2.0.3 等(共 3 个)- x1 q7 B; u: p& a- H. V; W
    micro-boot(com.oath.microservices)https://github.com/aol/micro-server1.2.6 等(共 38 个)% r& Q: s- @. l' ~, O* B' O: G( R
    sparkling-water-package_2.11(ai.h2o)https://github.com/h2oai/sparkling-water2.4.10 等(共 36 个)( U, B& }0 D& \3 h
    scalatest_2.13(au.com.dius.pact.provider)https://github.com/pact-foundation/pact-jvm4.2.4 等(共 5 个)' h/ s) U7 u$ K4 ^  b/ O' M
    mssql-jdbc(com.microsoft.sqlserver)https://github.com/microsoft/mssql-jdbc8.3.0.jre11-preview 等(共 100 个). I& G: i4 [0 C5 w8 z" d, [
    elide-spring-boot-starter(com.yahoo.elide)https://github.com/yahoo/elide6.0.3 等(共 45 个)+ y) _) x  Q9 q6 ~6 o, I  n
    kafka-connect-elastic5(com.datamountaineer)https://github.com/lensesio/stream-reactor1.2.0 等(共 5 个)$ D* J4 I' ^9 I' t- z* p
    kvision-server-spring-boot-jvm(io.kvision)https://github.com/rjaros/kvision5.4.3 等(共 9 个)
    ; A% n: |( r0 a* p% ^6 P, t2 Jr2dbc-postgresql(org.postgresql)https://github.com/pgjdbc/r2dbc-postgresql0.9.0.RC1 等(共 8 个)0 T. e1 p0 V3 J$ z' U2 v
    play-slick-evolutions_2.13(com.typesafe.play)https://github.com/playframework/play-slick5.0.0-RC3 等(共 29 个)
    : J) e" O  y6 v2 H/ k2 ]sbt-bloop-core(ch.epfl.scala)https://github.com/scalacenter/bloop1.4.8-43-c2d941d9 等(共 29 个)- Y- v0 K9 x% O
    jcseg-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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