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Apache Log4j2 远程代码执行漏洞

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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 Connector4 j; [' q* T0 Y
    受影响开源组件
    项目
    仓库地址
    版本

    * j' `! u( X* {  f* ~, Delasticsearch(org.elasticsearch)https://github.com/elastic/elasticsearch8.0.0-alpha2 等(共 100 个)' q4 E6 ~6 a( b$ q8 f! F
    spring-webflux(org.springframework)https://github.com/spring-projects/spring-framework5.2.6.RELEASE 等(共 40 个)% x3 L* |! c+ l( _$ r: Q
    druid(com.alibaba)https://github.com/alibaba/druid1.2.8 等(共 68 个)
    . }& }* v7 ]3 n+ x7 d) shystrix-rx-netty-metrics-stream(com.netflix.hystrix)https://github.com/Netflix/Hystrix1.5.4 等(共 2 个)% r7 }2 W5 W7 G  `, L
    spring-cloud-starter-alibaba-sentinel(com.alibaba.cloud)https://github.com/alibaba/spring-cloud-alibaba2021.1 等(共 14 个)
    6 Z& t8 t' H/ S' X' c6 R/ R1 ospring-boot-starter-ahas-sentinel-client(com.alibaba.csp)https://github.com/alibaba/Sentinel1.3.2 等(共 17 个)1 U, k, h# E* R' B/ ~( q
    redisson(org.redisson)https://github.com/redisson/redisson2.2.24 等(共 3 个)
    + i2 S# o0 {3 r* @) HHikariCP(com.zaxxer)https://github.com/brettwooldridge/HikariCP5.0.0 等(共 27 个)/ q+ v6 D6 J) u
    zipkin-collector-service(io.zipkin)https://github.com/openzipkin/zipkin1.40.2 等(共 27 个)
      m) U& x1 V5 G) f' K0 D9 ^mybatis-plus(com.baomidou)https://github.com/baomidou/mybatis-plus3.4.3.4 等(共 41 个)
    $ V$ i4 d- k  b, G- X' _zuul-sample(com.netflix.zuul)https://github.com/Netflix/zuul2.3.0 等(共 10 个)
    , F/ A* i  g7 O5 [' a' c2 }4 f% Z4 Mwatson-data-api-client(com.ibm.watson.data)https://github.com/OpenAPITools/openapi-generator0.1 等(共 1 个)- y& Z5 H3 h+ O/ v- g' V* \8 N: i
    spring-boot-admin-sample-consul(de.codecentric)https://github.com/codecentric/spring-boot-admin2.5.4 等(共 40 个)1 E; d# L6 G+ H# A
    jedis(redis.clients)https://github.com/redis/jedisjedis-3.6.2 等(共 36 个)) R% A" }& D8 i8 D
    grpc-benchmarks(io.grpc)https://github.com/grpc/grpc-java1.9.1 等(共 65 个)
    4 t3 y  B# y5 |( ^9 iktor-client-json-tests(io.ktor)https://github.com/ktorio/ktor1.6.7 等(共 32 个)9 L/ l" [3 J5 }' }% Z0 t, b
    gitbucket_2.13(io.github.gitbucket)https://github.com/gitbucket/gitbucket4.32.0 等(共 27 个)' s5 l; E+ a$ ~
    finagle-zipkin_2.12(com.twitter)https://github.com/twitter/finagle7.1.0 等(共 56 个)
    * k+ P/ b) h( p3 w, P4 @3 e0 Tresilience4j-vertx(io.github.resilience4j)https://github.com/resilience4j/resilience4j0.9.0 等(共 9 个)5 c2 C/ |6 B' I  ]8 U8 u
    elasticsearch-sql(org.nlpcn)https://github.com/NLPchina/elasticsearch-sql6.8.13.0 等(共 9 个)1 B- ^+ j% A- O( n: G
    exposed-spring-boot-starter(org.jetbrains.exposed)https://github.com/JetBrains/Exposed0.36.2 等(共 11 个)* H: `; J* f2 L8 j) }
    blade-sql2o(com.bladejava)https://github.com/lets-blade/blade1.2.9 等(共 1 个)+ r, `9 u; O5 ?/ u. f& Q
    netty-socketio(com.corundumstudio.socketio)https://github.com/mrniko/netty-socketio1.7.19 等(共 8 个)' ]! V2 ]) }  x* o1 H* m, M. _9 Y* h
    springfox-swagger2(io.springfox)https://github.com/springfox/springfox2.10.5 等(共 6 个)
    . Z: i4 ?# f7 p! u; _. Lmain_2.12(org.scala-sbt)https://github.com/sbt/sbt1.6.0-RC1 等(共 88 个)" S3 H# W* j, Y0 ~5 D3 h
    lettuce-core(io.lettuce)https://github.com/lettuce-io/lettuce-core6.1.5.RELEASE 等(共 42 个)
    ; A! y7 V, F2 z: S8 n4 d3 M' Grepository-azure(org.opensearch.plugin)https://github.com/opensearch-project/OpenSearch1.2.0 等(共 3 个), |( o; ?" b" U- Y' g. [( A
    reactor-test(io.projectreactor)https://github.com/reactor/reactor-core3.3.4.RELEASE 等(共 3 个)
    5 c5 [, R3 H& ]! |5 I$ jcorda-webserver-impl(net.corda)https://github.com/corda/cordacorda-3.0 等(共 32 个)
    8 w$ `3 o$ k6 O: Sconductor-redis-persistence(com.netflix.conductor)https://github.com/Netflix/conductor3.3.6 等(共 100 个)
    4 g% S9 E% N6 T( p0 M6 h9 u' {& warmeria(com.linecorp.armeria)https://github.com/line/armeria0.26.1.Final 等(共 2 个). B$ [2 j. k' W9 k  v$ Y7 j- o
    breeze-parent_2.13(org.scalanlp)https://github.com/scalanlp/breeze2.0.1-RC1 等(共 5 个)
    2 O) t# E, E6 [' A: omicrometer-core(io.micrometer)https://github.com/micrometer-metrics/micrometer1.8.1 等(共 98 个)/ X8 u! D2 E# D! `
    alink_connector_jdbc_sqlite_flink-1.9_2.11(com.alibaba.alink)https://github.com/alibaba/Alink1.5.1 等(共 3 个)6 _& ^9 {5 N6 d1 Q9 w' @
    initializr-actuator(io.spring.initializr)https://github.com/spring-io/initializr0.9.0 等(共 6 个)
    / |4 o; n9 x/ ~) J% Q( V* ttelegrambots-spring-boot-starter(org.telegram)https://github.com/rubenlagus/TelegramBots4.9.1 等(共 17 个)
    * e/ S' d5 r2 R9 f# A$ lspring-data-elasticsearch(org.springframework.data)https://github.com/spring-projects/spring-data-elasticsearch4.3.0 等(共 86 个)
    " U- |: D; F9 jfeast-common(dev.feast)https://github.com/feast-dev/feast0.9.2 等(共 26 个)
    + B/ R* J% m: U: k7 L9 p* djavamelody-core(net.bull.javamelody)https://github.com/javamelody/javamelody1.88.0 等(共 13 个)! F, A$ I+ n. z$ L/ m0 R
    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): m2 Y  l2 O+ K7 R! F
    scio-tensorflow_2.13(com.spotify)https://github.com/spotify/scio0.9.6 等(共 97 个)
    " z7 {; A) \/ L4 |" U0 u1 @grpc-client-spring-boot-autoconfigure(net.devh)https://github.com/yidongnan/grpc-spring-boot-starter2.9.0.RELEASE 等(共 16 个)2 H/ k+ O8 C4 n, a7 `
    inject-server_2.12(com.twitter)https://github.com/twitter/finatra21.9.0 等(共 56 个)
    ) m" p- \: @0 N7 ?# p; oclient-java-examples(io.kubernetes)https://github.com/kubernetes-client/java8.0.2 等(共 1 个)
    7 f0 T" w# l! B8 [/ I: |6 b5 c- ?7 ]/ Hreactivesocket-tck-drivers(io.reactivesocket)https://github.com/rsocket/rsocket-java0.6.0 等(共 1 个)
      }# L/ [/ n0 }7 `jest-droid(io.searchbox)https://github.com/searchbox-io/Jest6.3.1 等(共 8 个)
    7 e  ^+ Q3 H  E4 F9 C2 v' D8 pgraphql-dgs-example-java-webflux(com.netflix.graphql.dgs)https://github.com/Netflix/dgs-framework4.9.7 等(共 36 个)8 m- a& x, ]! p0 v& Y" Z3 U* l
    quill-jdbc-monix_2.11(io.getquill)https://github.com/getquill/quill3.9.0 等(共 62 个); F# w# ?" `* r( j) f) ]: f
    doobie-quill_2.12(org.tpolecat)https://github.com/tpolecat/doobie1.0.0-RC1 等(共 61 个)
    8 {; j( D! X! @http4k(org.http4k)https://github.com/http4k/http4k4.3.4.1 等(共 3 个)
    5 e7 ~% {" `! R# l  k. q7 ^elasticsearch-hadoop(org.elasticsearch)https://github.com/elastic/elasticsearch-hadoop8.0.0-beta1 等(共 100 个)
    6 v0 T( N! y9 v  G3 q+ ?sbt-shading(io.get-coursier)https://github.com/coursier/coursier1.0.0-RC8 等(共 1 个)& O6 v6 n" x% Q& V* D
    spark-cassandra-connector-unshaded_2.10(com.datastax.spark)https://github.com/datastax/spark-cassandra-connector2.0.9 等(共 54 个)
    1 h7 S$ ?+ N' G4 Z( n* l* F# ?& Swebdrivermanager(io.github.bonigarcia)https://github.com/bonigarcia/webdrivermanager4.0.0 等(共 15 个), F! M  G. ]7 m/ ^
    common-auth-v3(com.tencent.bk.devops.ci.common)https://github.com/Tencent/bk-ci1.2.0-rc.7-RELEASE 等(共 3 个)
    1 }  S1 ^& ^  f  t6 nreactor-netty(io.projectreactor.netty)https://github.com/reactor/reactor-netty1.0.9 等(共 75 个)
    + S5 ^# g3 U7 u6 gevcache-client-sample(com.netflix.evcache)https://github.com/Netflix/EVCache5.18.9 等(共 63 个)  |8 T" ?) ?' j% T4 B) J) T( z& t
    xtdb-test(com.xtdb)https://github.com/xtdb/xtdb1.20.0 等(共 9 个)
    ! O# {  H2 X4 n8 R- {: Vtransport-netty4(com.strapdata.elasticsearch.plugin)https://github.com/strapdata/elassandra6.2.3.31 等(共 14 个)$ L( K4 Y. X- b4 N! O
    sbt-metals(org.scalameta)https://github.com/scalameta/metals0.9.9 等(共 17 个)
    ; j* U- h3 q, K1 `) p" aelastic4s-embedded_2.12(com.sksamuel.elastic4s)https://github.com/sksamuel/elastic4s6.7.8 等(共 100 个)
    . H% d! X4 x- Ggenie-agent(com.netflix.genie)https://github.com/Netflix/genie4.0.4 等(共 100 个)
    # [' i0 a' u8 g$ V# g: [spring-kafka(org.springframework.kafka)https://github.com/spring-projects/spring-kafka2.7.9 等(共 79 个)
    & ]% P3 n5 q) ?6 s( v! `db-async-common_2.13(com.dripower)https://github.com/mauricio/postgresql-async0.3.109 等(共 19 个)7 C( v) |' w; L$ W
    selenide(com.codeborne)https://github.com/selenide/selenide5.25.0-selenium-4.0.0-rc-2 等(共 18 个)3 {+ u' o4 ]% ~& j
    cloudfoundry-identity-server(org.cloudfoundry.identity)https://github.com/cloudfoundry/uaa4.30.0 等(共 1 个)
    & S2 X- x9 y' [& g3 `: Qservo-atlas(com.netflix.servo)https://github.com/Netflix/servo0.13.2 等(共 20 个)
    ( C- {" [# h' T- C; p8 c% trxnetty-spectator-tcp(io.reactivex)https://github.com/ReactiveX/RxNetty0.5.3-rc.4 等(共 12 个)$ _# x: Y, I% \
    mleap-tensorflow_2.10(ml.combust.mleap)https://github.com/combust/mleap0.9.6 等(共 25 个)
    . i2 i+ I1 `7 G* q, K7 |3 ~% s/ Zspark-testing-base_2.12(com.holdenkarau)https://github.com/holdenk/spark-testing-base2.4.4_1.1.1 等(共 100 个)
    ) P( h) |) u# L$ u+ k  rgraphql-kotlin-spring-client(com.expediagroup)https://github.com/ExpediaGroup/graphql-kotlin5.0.0-alpha.0 等(共 20 个)
    ! A& v, J- o9 D' N: |graphql-spring-boot-test-autoconfigure(com.graphql-java-kickstart)https://github.com/graphql-java-kickstart/graphql-spring-boot8.1.1 等(共 33 个)6 J' G0 [$ y3 A. x% K8 t
    discord4j-rest(com.discord4j)https://github.com/Discord4J/Discord4J3.2.1 等(共 15 个): e4 R4 V; m1 k
    twitter-server-logback-classic_2.13(com.twitter)https://github.com/twitter/twitter-server21.9.0 等(共 54 个)
    $ G8 m. v- b" t8 X1 W/ n4 |. esynthea(org.mitre.synthea)https://github.com/synthetichealth/synthea2.7.0 等(共 2 个)
    5 _- A% P, n/ A3 E, x; k% i4 w# yspring-integration-redis(org.springframework.integration)https://github.com/spring-projects/spring-integration5.5.6 等(共 30 个)1 U: \9 r; _7 S: Z0 c" I& j: ^8 T# p
    cyclops-reactor-integration(com.oath.cyclops)https://github.com/aol/cyclops10.4.0 等(共 1 个)0 T7 ?* Q$ O) a. A; k; z2 j
    akka-stream-alpakka-geode_2.12(com.lightbend.akka)https://github.com/akka/alpakka1.0-M1 等(共 13 个)  }1 ~* W6 O. m* ?, D# ]
    mantis-client(io.mantisrx)https://github.com/Netflix/mantis1.3.9 等(共 83 个)  l( \& i" [' t8 X6 H
    mybatis-generator-plugin(com.itfsw)https://github.com/itfsw/mybatis-generator-plugin1.2.9 等(共 31 个)( Y9 p, C3 D4 t+ L. D" N0 p& I  a
    ktorm-support-sqlserver(org.ktorm)https://github.com/kotlin-orm/ktorm3.3.0 等(共 11 个)
    + @% ^/ g" I7 X2 Vgatk(org.broadinstitute)https://github.com/broadinstitute/gatk4.beta.2 等(共 39 个)" j3 a& L0 X3 C3 B
    azure-messaging-servicebus(com.azure)https://github.com/Azure/azure-sdk-for-java7.5.1 等(共 100 个)
    , t; U. z% m( amica-metrics(net.dreamlu)https://github.com/lets-mica/mica2.5.7 等(共 7 个)
    1 e' V5 U. L: s) y5 d1 g: mshiro-redis(org.crazycake)https://github.com/alexxiyang/shiro-redis3.3.1 等(共 2 个)
    : \% ]0 x( L$ ~9 D  Xenumeratum-play_2.12(com.beachape)https://github.com/lloydmeta/enumeratum1.5.16 等(共 2 个)7 V) G( e1 ]- R: l; g" N7 g4 M
    jdonframework(org.jdon)https://github.com/banq/jdonframework6.6.8 等(共 1 个)
    : X% B5 R9 T4 |weid-java-sdk(com.webank)https://github.com/WeBankBlockchain/WeIdentity1.8.1 等(共 3 个)
    $ L. M' k1 P! l$ K! Q) Klog-protocol(io.shulie.pradar)https://github.com/shulieTech/Takin2.0.3 等(共 3 个)( l8 s! |9 X1 a- h( X4 U
    micro-boot(com.oath.microservices)https://github.com/aol/micro-server1.2.6 等(共 38 个)( d1 D3 x7 j. P: H$ J# R
    sparkling-water-package_2.11(ai.h2o)https://github.com/h2oai/sparkling-water2.4.10 等(共 36 个)* E$ ^( ~! J# P
    scalatest_2.13(au.com.dius.pact.provider)https://github.com/pact-foundation/pact-jvm4.2.4 等(共 5 个)# O8 ^$ s' S/ p7 ]0 V* E3 |
    mssql-jdbc(com.microsoft.sqlserver)https://github.com/microsoft/mssql-jdbc8.3.0.jre11-preview 等(共 100 个); Z/ [/ G# Y, Q# Z0 o
    elide-spring-boot-starter(com.yahoo.elide)https://github.com/yahoo/elide6.0.3 等(共 45 个)
    # F! H0 B: g! {' G9 A4 V1 t9 ?kafka-connect-elastic5(com.datamountaineer)https://github.com/lensesio/stream-reactor1.2.0 等(共 5 个)
    . x6 B  X, y5 \% d) W  ~! ekvision-server-spring-boot-jvm(io.kvision)https://github.com/rjaros/kvision5.4.3 等(共 9 个)
    + j* G! T1 ^5 P( }r2dbc-postgresql(org.postgresql)https://github.com/pgjdbc/r2dbc-postgresql0.9.0.RC1 等(共 8 个)
    ' o1 c6 }2 L9 Oplay-slick-evolutions_2.13(com.typesafe.play)https://github.com/playframework/play-slick5.0.0-RC3 等(共 29 个): k& i* K. c1 j+ w, L$ }4 K5 T5 u$ b
    sbt-bloop-core(ch.epfl.scala)https://github.com/scalacenter/bloop1.4.8-43-c2d941d9 等(共 29 个)) O9 F4 @9 _2 v0 n5 f
    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

    " J! ^8 ]) c# A$ a: w

    via https://nosec.org/home/detail/4917.html


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