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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
    昨天 17:14
  • 签到天数: 2366 天

    [LV.Master]伴坛终老

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    1
    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 Connector" r3 L8 I' W! o8 V! R4 ?0 a3 G
    受影响开源组件
    项目
    仓库地址
    版本
    7 J$ G* r1 ?1 O
    elasticsearch(org.elasticsearch)https://github.com/elastic/elasticsearch8.0.0-alpha2 等(共 100 个)0 d+ ^% W' z1 R& M4 f' _! T
    spring-webflux(org.springframework)https://github.com/spring-projects/spring-framework5.2.6.RELEASE 等(共 40 个)
    - L# P' i$ s% s$ udruid(com.alibaba)https://github.com/alibaba/druid1.2.8 等(共 68 个)6 G! h1 n  [. ^: l: @
    hystrix-rx-netty-metrics-stream(com.netflix.hystrix)https://github.com/Netflix/Hystrix1.5.4 等(共 2 个)
    4 S; F5 y, C3 l5 r3 G- z4 n0 Gspring-cloud-starter-alibaba-sentinel(com.alibaba.cloud)https://github.com/alibaba/spring-cloud-alibaba2021.1 等(共 14 个)' c% @3 d+ v$ N5 P
    spring-boot-starter-ahas-sentinel-client(com.alibaba.csp)https://github.com/alibaba/Sentinel1.3.2 等(共 17 个)
    8 J  @; P" N& g( h- m# Sredisson(org.redisson)https://github.com/redisson/redisson2.2.24 等(共 3 个)1 F' f2 v! g% B  u
    HikariCP(com.zaxxer)https://github.com/brettwooldridge/HikariCP5.0.0 等(共 27 个)
    ( D# x; @/ E' a& U5 L. `; `zipkin-collector-service(io.zipkin)https://github.com/openzipkin/zipkin1.40.2 等(共 27 个)+ ?" E- o7 u' R$ i- w
    mybatis-plus(com.baomidou)https://github.com/baomidou/mybatis-plus3.4.3.4 等(共 41 个)
    * z" l; P( c( A& @! ]zuul-sample(com.netflix.zuul)https://github.com/Netflix/zuul2.3.0 等(共 10 个)1 [5 J9 s" w' q1 ^2 g: j) [1 a! ]
    watson-data-api-client(com.ibm.watson.data)https://github.com/OpenAPITools/openapi-generator0.1 等(共 1 个)
    9 a- ?+ V1 I( k) C7 ^spring-boot-admin-sample-consul(de.codecentric)https://github.com/codecentric/spring-boot-admin2.5.4 等(共 40 个)
    9 d- U% D, |' @6 u+ r6 yjedis(redis.clients)https://github.com/redis/jedisjedis-3.6.2 等(共 36 个): T6 V% [1 y; Q. U
    grpc-benchmarks(io.grpc)https://github.com/grpc/grpc-java1.9.1 等(共 65 个)# S0 o3 V+ q0 p* q" o$ W, u9 d
    ktor-client-json-tests(io.ktor)https://github.com/ktorio/ktor1.6.7 等(共 32 个)
    3 A0 j) s) G2 n7 q3 z9 V. c7 A2 Ygitbucket_2.13(io.github.gitbucket)https://github.com/gitbucket/gitbucket4.32.0 等(共 27 个)
    4 n0 Z( F6 ~2 T0 U1 rfinagle-zipkin_2.12(com.twitter)https://github.com/twitter/finagle7.1.0 等(共 56 个)
    ) M" m4 w) m5 I$ N8 w% Eresilience4j-vertx(io.github.resilience4j)https://github.com/resilience4j/resilience4j0.9.0 等(共 9 个), ?4 [& v& |: |6 @- g
    elasticsearch-sql(org.nlpcn)https://github.com/NLPchina/elasticsearch-sql6.8.13.0 等(共 9 个)
    4 o3 e8 T1 T1 Y6 l! S9 N$ fexposed-spring-boot-starter(org.jetbrains.exposed)https://github.com/JetBrains/Exposed0.36.2 等(共 11 个)
    / N) ^  w' o" ^3 n7 h% Zblade-sql2o(com.bladejava)https://github.com/lets-blade/blade1.2.9 等(共 1 个)3 n# W8 z! b* W, G
    netty-socketio(com.corundumstudio.socketio)https://github.com/mrniko/netty-socketio1.7.19 等(共 8 个)
    * A8 M7 k) U  w  q) E& j" h+ \springfox-swagger2(io.springfox)https://github.com/springfox/springfox2.10.5 等(共 6 个)
    ; a* K) u6 o/ jmain_2.12(org.scala-sbt)https://github.com/sbt/sbt1.6.0-RC1 等(共 88 个)2 |! ]6 z& }$ q7 E
    lettuce-core(io.lettuce)https://github.com/lettuce-io/lettuce-core6.1.5.RELEASE 等(共 42 个)* e8 {+ l* y: R& j* B" ?( ^
    repository-azure(org.opensearch.plugin)https://github.com/opensearch-project/OpenSearch1.2.0 等(共 3 个)  ~6 }  `7 @/ f/ @) X$ f
    reactor-test(io.projectreactor)https://github.com/reactor/reactor-core3.3.4.RELEASE 等(共 3 个)% a. N* }. W/ S! C( L
    corda-webserver-impl(net.corda)https://github.com/corda/cordacorda-3.0 等(共 32 个)  s' v/ ?* M; G7 o5 E
    conductor-redis-persistence(com.netflix.conductor)https://github.com/Netflix/conductor3.3.6 等(共 100 个)0 k0 r3 v8 U1 `' \( f
    armeria(com.linecorp.armeria)https://github.com/line/armeria0.26.1.Final 等(共 2 个)
    ) @3 g( l0 b; I9 @7 b# gbreeze-parent_2.13(org.scalanlp)https://github.com/scalanlp/breeze2.0.1-RC1 等(共 5 个)3 a( W% j  y, ^& ^/ w( @- t
    micrometer-core(io.micrometer)https://github.com/micrometer-metrics/micrometer1.8.1 等(共 98 个)1 k" ]3 n0 x. j; Q7 X" x
    alink_connector_jdbc_sqlite_flink-1.9_2.11(com.alibaba.alink)https://github.com/alibaba/Alink1.5.1 等(共 3 个). V0 B/ y3 `; D+ C
    initializr-actuator(io.spring.initializr)https://github.com/spring-io/initializr0.9.0 等(共 6 个). \8 r" `1 x- C0 }# c& J6 `# S7 Y; B
    telegrambots-spring-boot-starter(org.telegram)https://github.com/rubenlagus/TelegramBots4.9.1 等(共 17 个)# y5 G! p: U' ^) m& N
    spring-data-elasticsearch(org.springframework.data)https://github.com/spring-projects/spring-data-elasticsearch4.3.0 等(共 86 个)$ N. W  q2 \3 e% n; Q
    feast-common(dev.feast)https://github.com/feast-dev/feast0.9.2 等(共 26 个)
    0 i9 W$ A$ R) c0 X6 K5 q7 Fjavamelody-core(net.bull.javamelody)https://github.com/javamelody/javamelody1.88.0 等(共 13 个)
    - ?0 d. C* S# q0 o& u9 janalytics-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)- O4 A) L0 B8 O) Z3 G$ ~) K) C; y
    scio-tensorflow_2.13(com.spotify)https://github.com/spotify/scio0.9.6 等(共 97 个)
    " f4 D, r) }, c. fgrpc-client-spring-boot-autoconfigure(net.devh)https://github.com/yidongnan/grpc-spring-boot-starter2.9.0.RELEASE 等(共 16 个)- i* ^  [+ S* y, ]& O8 F6 b. k; x+ G
    inject-server_2.12(com.twitter)https://github.com/twitter/finatra21.9.0 等(共 56 个)
    . @$ R# j/ Y& w, Hclient-java-examples(io.kubernetes)https://github.com/kubernetes-client/java8.0.2 等(共 1 个)
    * H( D  O8 Y6 ~/ V+ B2 ^2 @* i) zreactivesocket-tck-drivers(io.reactivesocket)https://github.com/rsocket/rsocket-java0.6.0 等(共 1 个)- Q3 J& t9 |8 T1 H; t5 G
    jest-droid(io.searchbox)https://github.com/searchbox-io/Jest6.3.1 等(共 8 个)( u! c- g$ w! w
    graphql-dgs-example-java-webflux(com.netflix.graphql.dgs)https://github.com/Netflix/dgs-framework4.9.7 等(共 36 个)
    ! M' v7 y; Z" s. Z! l* gquill-jdbc-monix_2.11(io.getquill)https://github.com/getquill/quill3.9.0 等(共 62 个)
    * L! _1 Q% ~8 u) n2 N3 R" tdoobie-quill_2.12(org.tpolecat)https://github.com/tpolecat/doobie1.0.0-RC1 等(共 61 个)2 {# M' z( W* T2 ^5 T
    http4k(org.http4k)https://github.com/http4k/http4k4.3.4.1 等(共 3 个)
    + H6 W1 p- e  C4 V( M5 xelasticsearch-hadoop(org.elasticsearch)https://github.com/elastic/elasticsearch-hadoop8.0.0-beta1 等(共 100 个)
    - J6 Z7 ]1 g, {sbt-shading(io.get-coursier)https://github.com/coursier/coursier1.0.0-RC8 等(共 1 个)
    & v0 @6 r- |% w5 E1 Wspark-cassandra-connector-unshaded_2.10(com.datastax.spark)https://github.com/datastax/spark-cassandra-connector2.0.9 等(共 54 个)
    ' T# t- b# e4 V/ }) h$ ~3 hwebdrivermanager(io.github.bonigarcia)https://github.com/bonigarcia/webdrivermanager4.0.0 等(共 15 个)
      H. V3 q4 j. p; f7 |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 h1 W+ Z1 l! c$ m7 z+ q) W' Q7 i; lreactor-netty(io.projectreactor.netty)https://github.com/reactor/reactor-netty1.0.9 等(共 75 个)/ ]1 S# |, @7 Q7 U
    evcache-client-sample(com.netflix.evcache)https://github.com/Netflix/EVCache5.18.9 等(共 63 个)" j5 O( K/ D! `7 u* J9 F, R" y7 u# q
    xtdb-test(com.xtdb)https://github.com/xtdb/xtdb1.20.0 等(共 9 个)
    % W2 A8 Z, x3 u9 j4 x5 ptransport-netty4(com.strapdata.elasticsearch.plugin)https://github.com/strapdata/elassandra6.2.3.31 等(共 14 个)
    ( d5 H# ?8 s8 z: y4 Hsbt-metals(org.scalameta)https://github.com/scalameta/metals0.9.9 等(共 17 个)
    ' s; H0 A8 A7 |* {- P" ?4 M* relastic4s-embedded_2.12(com.sksamuel.elastic4s)https://github.com/sksamuel/elastic4s6.7.8 等(共 100 个)
    4 E, A( y% w6 P3 q$ M7 rgenie-agent(com.netflix.genie)https://github.com/Netflix/genie4.0.4 等(共 100 个)
    " q  l2 o' D. s- Y; Y+ F  H6 [2 s( j7 Ospring-kafka(org.springframework.kafka)https://github.com/spring-projects/spring-kafka2.7.9 等(共 79 个)
    , r% B% M# h, U: P' Y. P! K0 pdb-async-common_2.13(com.dripower)https://github.com/mauricio/postgresql-async0.3.109 等(共 19 个)$ l6 v8 v. o. t* A7 w6 E$ S& x
    selenide(com.codeborne)https://github.com/selenide/selenide5.25.0-selenium-4.0.0-rc-2 等(共 18 个)+ G  ~9 `5 p; J- b" N3 n* ]1 r% z
    cloudfoundry-identity-server(org.cloudfoundry.identity)https://github.com/cloudfoundry/uaa4.30.0 等(共 1 个)
    ; m3 L6 h1 b. K5 `servo-atlas(com.netflix.servo)https://github.com/Netflix/servo0.13.2 等(共 20 个)
    . G. G2 a5 C( k' D" p! ]rxnetty-spectator-tcp(io.reactivex)https://github.com/ReactiveX/RxNetty0.5.3-rc.4 等(共 12 个)$ F/ ~, w* E& r" O! Z. f
    mleap-tensorflow_2.10(ml.combust.mleap)https://github.com/combust/mleap0.9.6 等(共 25 个)
    2 A% y6 f# E8 a" C+ xspark-testing-base_2.12(com.holdenkarau)https://github.com/holdenk/spark-testing-base2.4.4_1.1.1 等(共 100 个)0 y$ ~, k" ~/ m% G6 o/ Y2 X( h
    graphql-kotlin-spring-client(com.expediagroup)https://github.com/ExpediaGroup/graphql-kotlin5.0.0-alpha.0 等(共 20 个)
    7 L' m+ w( I% A: z" U3 U4 hgraphql-spring-boot-test-autoconfigure(com.graphql-java-kickstart)https://github.com/graphql-java-kickstart/graphql-spring-boot8.1.1 等(共 33 个)- [9 s! e: B+ x$ T" Q* H" f
    discord4j-rest(com.discord4j)https://github.com/Discord4J/Discord4J3.2.1 等(共 15 个)) `" A% V) v" u' x
    twitter-server-logback-classic_2.13(com.twitter)https://github.com/twitter/twitter-server21.9.0 等(共 54 个)7 `& n6 d% d; ~6 i6 E& }. X
    synthea(org.mitre.synthea)https://github.com/synthetichealth/synthea2.7.0 等(共 2 个)% f5 d9 p. L0 C, B) R( g% s
    spring-integration-redis(org.springframework.integration)https://github.com/spring-projects/spring-integration5.5.6 等(共 30 个)0 v$ H" {2 Y6 S7 y
    cyclops-reactor-integration(com.oath.cyclops)https://github.com/aol/cyclops10.4.0 等(共 1 个)3 T. k9 G1 L, \! H; g$ h& I
    akka-stream-alpakka-geode_2.12(com.lightbend.akka)https://github.com/akka/alpakka1.0-M1 等(共 13 个)6 ~4 c& x( H1 x7 }
    mantis-client(io.mantisrx)https://github.com/Netflix/mantis1.3.9 等(共 83 个)+ B& M+ D  N% z8 b( g1 V8 Y
    mybatis-generator-plugin(com.itfsw)https://github.com/itfsw/mybatis-generator-plugin1.2.9 等(共 31 个)
    5 S/ K! D) [6 {# Gktorm-support-sqlserver(org.ktorm)https://github.com/kotlin-orm/ktorm3.3.0 等(共 11 个)
    + q. S3 p% _; b# I+ Agatk(org.broadinstitute)https://github.com/broadinstitute/gatk4.beta.2 等(共 39 个)
    $ Y4 s" g% r& Z- T3 h# hazure-messaging-servicebus(com.azure)https://github.com/Azure/azure-sdk-for-java7.5.1 等(共 100 个)
    . v( U5 W$ x) D6 @( D& t% b( Zmica-metrics(net.dreamlu)https://github.com/lets-mica/mica2.5.7 等(共 7 个)
    7 g! o. P: E( n" J  a' [/ O- P5 zshiro-redis(org.crazycake)https://github.com/alexxiyang/shiro-redis3.3.1 等(共 2 个)
    0 s# m! C: ]/ _) F: venumeratum-play_2.12(com.beachape)https://github.com/lloydmeta/enumeratum1.5.16 等(共 2 个). {0 H5 P4 u: q1 i0 R5 N
    jdonframework(org.jdon)https://github.com/banq/jdonframework6.6.8 等(共 1 个): \* g/ J/ r7 s) U2 E) D; ~: p
    weid-java-sdk(com.webank)https://github.com/WeBankBlockchain/WeIdentity1.8.1 等(共 3 个)
    4 r, B$ t! ?' {, q" }log-protocol(io.shulie.pradar)https://github.com/shulieTech/Takin2.0.3 等(共 3 个)6 V( \, }' J, J
    micro-boot(com.oath.microservices)https://github.com/aol/micro-server1.2.6 等(共 38 个)
    5 S6 q( t* ^! s; e1 ]3 Rsparkling-water-package_2.11(ai.h2o)https://github.com/h2oai/sparkling-water2.4.10 等(共 36 个)
    0 A8 j. R* Y+ B. _scalatest_2.13(au.com.dius.pact.provider)https://github.com/pact-foundation/pact-jvm4.2.4 等(共 5 个)
    , u* X8 Q  @, u1 s7 nmssql-jdbc(com.microsoft.sqlserver)https://github.com/microsoft/mssql-jdbc8.3.0.jre11-preview 等(共 100 个)
    4 @% r' F  D. L: Oelide-spring-boot-starter(com.yahoo.elide)https://github.com/yahoo/elide6.0.3 等(共 45 个)
    9 f3 C4 l; }" T5 i( E1 @" Nkafka-connect-elastic5(com.datamountaineer)https://github.com/lensesio/stream-reactor1.2.0 等(共 5 个)$ A8 X% l: H8 A" b; R- L% A0 W
    kvision-server-spring-boot-jvm(io.kvision)https://github.com/rjaros/kvision5.4.3 等(共 9 个)6 M4 O* \- t; J  X# x1 g
    r2dbc-postgresql(org.postgresql)https://github.com/pgjdbc/r2dbc-postgresql0.9.0.RC1 等(共 8 个)8 }* q$ _: A- Z
    play-slick-evolutions_2.13(com.typesafe.play)https://github.com/playframework/play-slick5.0.0-RC3 等(共 29 个)
    8 Q; S9 `6 C1 l( ~sbt-bloop-core(ch.epfl.scala)https://github.com/scalacenter/bloop1.4.8-43-c2d941d9 等(共 29 个)8 W) {+ w  n- X0 `+ h
    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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