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Apache Log4j2 远程代码执行漏洞

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  • TA的每日心情
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    前天 10:42
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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 Connector$ B$ K  _& F8 w  X# Z/ j) n+ \
    受影响开源组件
    项目
    仓库地址
    版本

    . r5 Y/ [* q, ?3 |elasticsearch(org.elasticsearch)https://github.com/elastic/elasticsearch8.0.0-alpha2 等(共 100 个)
    ' J. ]5 \. r; m! E2 Cspring-webflux(org.springframework)https://github.com/spring-projects/spring-framework5.2.6.RELEASE 等(共 40 个)% Y( F& e8 \) n% c$ A8 P
    druid(com.alibaba)https://github.com/alibaba/druid1.2.8 等(共 68 个)% h+ M5 _9 f' Z* X* a
    hystrix-rx-netty-metrics-stream(com.netflix.hystrix)https://github.com/Netflix/Hystrix1.5.4 等(共 2 个)& b( i- c, H+ f6 a
    spring-cloud-starter-alibaba-sentinel(com.alibaba.cloud)https://github.com/alibaba/spring-cloud-alibaba2021.1 等(共 14 个)1 N2 ~9 _9 h' c" N/ P- G; e5 F. ]
    spring-boot-starter-ahas-sentinel-client(com.alibaba.csp)https://github.com/alibaba/Sentinel1.3.2 等(共 17 个)
    2 i" x1 J* c! j. }) |redisson(org.redisson)https://github.com/redisson/redisson2.2.24 等(共 3 个)% A4 j, w7 _# f- I; [: h8 `0 Q
    HikariCP(com.zaxxer)https://github.com/brettwooldridge/HikariCP5.0.0 等(共 27 个)
    ' X- [4 [( v, H0 C% ^zipkin-collector-service(io.zipkin)https://github.com/openzipkin/zipkin1.40.2 等(共 27 个), ^$ \+ g: y; @  r7 P# O% V
    mybatis-plus(com.baomidou)https://github.com/baomidou/mybatis-plus3.4.3.4 等(共 41 个); M( u+ G7 J0 ~8 ~: G9 b
    zuul-sample(com.netflix.zuul)https://github.com/Netflix/zuul2.3.0 等(共 10 个): U! Q6 u. w" b3 s/ B
    watson-data-api-client(com.ibm.watson.data)https://github.com/OpenAPITools/openapi-generator0.1 等(共 1 个), ?) v7 @7 D" K# ^' c( x: I5 a' K
    spring-boot-admin-sample-consul(de.codecentric)https://github.com/codecentric/spring-boot-admin2.5.4 等(共 40 个)
    0 E8 X" Q$ `4 `2 T' Rjedis(redis.clients)https://github.com/redis/jedisjedis-3.6.2 等(共 36 个); i: u& D& w. A" J7 s
    grpc-benchmarks(io.grpc)https://github.com/grpc/grpc-java1.9.1 等(共 65 个); k! S2 S9 L# \* l: k: j- S
    ktor-client-json-tests(io.ktor)https://github.com/ktorio/ktor1.6.7 等(共 32 个)5 j. J$ Q! e( n9 T0 K/ K
    gitbucket_2.13(io.github.gitbucket)https://github.com/gitbucket/gitbucket4.32.0 等(共 27 个)
    . c4 x* ~' E4 N* [- M) ]finagle-zipkin_2.12(com.twitter)https://github.com/twitter/finagle7.1.0 等(共 56 个)2 y, q8 V9 r! @1 E( S
    resilience4j-vertx(io.github.resilience4j)https://github.com/resilience4j/resilience4j0.9.0 等(共 9 个)
    " D2 B6 D8 B2 S3 felasticsearch-sql(org.nlpcn)https://github.com/NLPchina/elasticsearch-sql6.8.13.0 等(共 9 个)
    ! h) b9 h$ O+ Y# Mexposed-spring-boot-starter(org.jetbrains.exposed)https://github.com/JetBrains/Exposed0.36.2 等(共 11 个)/ I" s; }1 L! H8 g/ ~$ j* ?, p! w
    blade-sql2o(com.bladejava)https://github.com/lets-blade/blade1.2.9 等(共 1 个)" {6 u% h" Z! b3 C
    netty-socketio(com.corundumstudio.socketio)https://github.com/mrniko/netty-socketio1.7.19 等(共 8 个)
    1 |2 u5 B) k& F# W7 Dspringfox-swagger2(io.springfox)https://github.com/springfox/springfox2.10.5 等(共 6 个)1 `  Z# \+ T6 x7 K0 x
    main_2.12(org.scala-sbt)https://github.com/sbt/sbt1.6.0-RC1 等(共 88 个)
    " a8 _& v, t! O) c2 B0 }2 d8 _$ \lettuce-core(io.lettuce)https://github.com/lettuce-io/lettuce-core6.1.5.RELEASE 等(共 42 个)
    7 B/ Q& i# Z6 A, C" ?! i( {& j' trepository-azure(org.opensearch.plugin)https://github.com/opensearch-project/OpenSearch1.2.0 等(共 3 个)- |; @8 H( S/ i, f! a$ O2 A' \* Q
    reactor-test(io.projectreactor)https://github.com/reactor/reactor-core3.3.4.RELEASE 等(共 3 个)
    * u" K; z+ s% D7 K" Gcorda-webserver-impl(net.corda)https://github.com/corda/cordacorda-3.0 等(共 32 个)5 q  o* m  _1 I% g' ]" D
    conductor-redis-persistence(com.netflix.conductor)https://github.com/Netflix/conductor3.3.6 等(共 100 个)
    : U; U: U/ }( _9 A' harmeria(com.linecorp.armeria)https://github.com/line/armeria0.26.1.Final 等(共 2 个)' f# [6 {3 r1 \2 O
    breeze-parent_2.13(org.scalanlp)https://github.com/scalanlp/breeze2.0.1-RC1 等(共 5 个)
    . ?; M7 [9 N# H& V! u; ^+ h$ s1 ^3 [micrometer-core(io.micrometer)https://github.com/micrometer-metrics/micrometer1.8.1 等(共 98 个)# h  X# z0 {+ Z9 {" j
    alink_connector_jdbc_sqlite_flink-1.9_2.11(com.alibaba.alink)https://github.com/alibaba/Alink1.5.1 等(共 3 个)+ }3 n/ u2 `  Y8 D! @$ l! W" d* `
    initializr-actuator(io.spring.initializr)https://github.com/spring-io/initializr0.9.0 等(共 6 个)
    ( q) I1 ^  i" `0 O* G8 Wtelegrambots-spring-boot-starter(org.telegram)https://github.com/rubenlagus/TelegramBots4.9.1 等(共 17 个)
    8 a5 I( ]% i& ?, gspring-data-elasticsearch(org.springframework.data)https://github.com/spring-projects/spring-data-elasticsearch4.3.0 等(共 86 个)
    ( j+ k$ P  a+ f* ^! r* xfeast-common(dev.feast)https://github.com/feast-dev/feast0.9.2 等(共 26 个)
    ) z( j, p' p4 t8 K) m0 u; xjavamelody-core(net.bull.javamelody)https://github.com/javamelody/javamelody1.88.0 等(共 13 个). t; B) S& L% I* Z2 T
    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)% o" ~# Z3 w) ^& B- J" B' `8 d' v( S
    scio-tensorflow_2.13(com.spotify)https://github.com/spotify/scio0.9.6 等(共 97 个)
    - s) N3 ?5 O9 ]3 l( s/ _grpc-client-spring-boot-autoconfigure(net.devh)https://github.com/yidongnan/grpc-spring-boot-starter2.9.0.RELEASE 等(共 16 个), j% ]1 L; V! }
    inject-server_2.12(com.twitter)https://github.com/twitter/finatra21.9.0 等(共 56 个)' W- t3 J  j* N8 X
    client-java-examples(io.kubernetes)https://github.com/kubernetes-client/java8.0.2 等(共 1 个)
    , p1 r9 i& N6 q9 [4 Z+ _$ S, ureactivesocket-tck-drivers(io.reactivesocket)https://github.com/rsocket/rsocket-java0.6.0 等(共 1 个)
    4 u! b; h3 G: V$ Sjest-droid(io.searchbox)https://github.com/searchbox-io/Jest6.3.1 等(共 8 个)
    4 ]! f2 y8 D5 h& l3 G0 q- u4 w; Egraphql-dgs-example-java-webflux(com.netflix.graphql.dgs)https://github.com/Netflix/dgs-framework4.9.7 等(共 36 个)
    ) C# k! A2 P* c0 _5 @* T) Nquill-jdbc-monix_2.11(io.getquill)https://github.com/getquill/quill3.9.0 等(共 62 个)
    : t0 J0 H. Q. J# v2 Mdoobie-quill_2.12(org.tpolecat)https://github.com/tpolecat/doobie1.0.0-RC1 等(共 61 个)
    ; o: m$ {4 A% b% [2 T3 Xhttp4k(org.http4k)https://github.com/http4k/http4k4.3.4.1 等(共 3 个)
    : Q  s0 X& B4 L% v% [elasticsearch-hadoop(org.elasticsearch)https://github.com/elastic/elasticsearch-hadoop8.0.0-beta1 等(共 100 个)
    , S, C+ |0 N2 n( Vsbt-shading(io.get-coursier)https://github.com/coursier/coursier1.0.0-RC8 等(共 1 个)8 V& _# @6 S7 @$ N7 e
    spark-cassandra-connector-unshaded_2.10(com.datastax.spark)https://github.com/datastax/spark-cassandra-connector2.0.9 等(共 54 个)
    ( R3 W  t( v# E: R$ G+ I9 T4 Uwebdrivermanager(io.github.bonigarcia)https://github.com/bonigarcia/webdrivermanager4.0.0 等(共 15 个)- v1 p1 }/ b) l6 Z8 [3 K$ h; c
    common-auth-v3(com.tencent.bk.devops.ci.common)https://github.com/Tencent/bk-ci1.2.0-rc.7-RELEASE 等(共 3 个)
    ( ^" p6 e( o$ D6 B; t4 Oreactor-netty(io.projectreactor.netty)https://github.com/reactor/reactor-netty1.0.9 等(共 75 个)1 V' Z# G6 Y" N
    evcache-client-sample(com.netflix.evcache)https://github.com/Netflix/EVCache5.18.9 等(共 63 个)
    2 [  G+ X( }" F+ D- wxtdb-test(com.xtdb)https://github.com/xtdb/xtdb1.20.0 等(共 9 个)/ t0 y+ }1 `$ O& t$ Z+ L9 p7 C
    transport-netty4(com.strapdata.elasticsearch.plugin)https://github.com/strapdata/elassandra6.2.3.31 等(共 14 个), X! y8 y3 k  v) X: {
    sbt-metals(org.scalameta)https://github.com/scalameta/metals0.9.9 等(共 17 个)
    - e& a4 ^, B5 k& P; i, kelastic4s-embedded_2.12(com.sksamuel.elastic4s)https://github.com/sksamuel/elastic4s6.7.8 等(共 100 个): H. V8 a0 O, v$ k* J! M! [% y8 B
    genie-agent(com.netflix.genie)https://github.com/Netflix/genie4.0.4 等(共 100 个)" j* L% d4 P0 Q% p( j& y
    spring-kafka(org.springframework.kafka)https://github.com/spring-projects/spring-kafka2.7.9 等(共 79 个)
    * j9 {0 Q2 i9 E, f* f5 g, ndb-async-common_2.13(com.dripower)https://github.com/mauricio/postgresql-async0.3.109 等(共 19 个)& v* H+ e. [0 a$ X( R$ t) _& T
    selenide(com.codeborne)https://github.com/selenide/selenide5.25.0-selenium-4.0.0-rc-2 等(共 18 个)
    0 i# _1 U, s. ?' u9 u' rcloudfoundry-identity-server(org.cloudfoundry.identity)https://github.com/cloudfoundry/uaa4.30.0 等(共 1 个)9 N; z0 t/ r5 i* S! U6 s( w
    servo-atlas(com.netflix.servo)https://github.com/Netflix/servo0.13.2 等(共 20 个)
    3 M' d+ i4 Z  {: E8 V0 frxnetty-spectator-tcp(io.reactivex)https://github.com/ReactiveX/RxNetty0.5.3-rc.4 等(共 12 个)
    + S& W8 s' z) p5 tmleap-tensorflow_2.10(ml.combust.mleap)https://github.com/combust/mleap0.9.6 等(共 25 个)/ S5 S# W% `4 s6 Y
    spark-testing-base_2.12(com.holdenkarau)https://github.com/holdenk/spark-testing-base2.4.4_1.1.1 等(共 100 个)
    % q- K' }" Y. m+ R& Y# k8 Pgraphql-kotlin-spring-client(com.expediagroup)https://github.com/ExpediaGroup/graphql-kotlin5.0.0-alpha.0 等(共 20 个)! X: G) I) w4 Y5 m3 R* }, P
    graphql-spring-boot-test-autoconfigure(com.graphql-java-kickstart)https://github.com/graphql-java-kickstart/graphql-spring-boot8.1.1 等(共 33 个)( h3 C2 Y! D* I# V
    discord4j-rest(com.discord4j)https://github.com/Discord4J/Discord4J3.2.1 等(共 15 个)3 I; x, L  z! k" Y9 q
    twitter-server-logback-classic_2.13(com.twitter)https://github.com/twitter/twitter-server21.9.0 等(共 54 个)! U" y8 A* H, E5 n( Z- p' ]
    synthea(org.mitre.synthea)https://github.com/synthetichealth/synthea2.7.0 等(共 2 个); Y, w# D- Y$ w
    spring-integration-redis(org.springframework.integration)https://github.com/spring-projects/spring-integration5.5.6 等(共 30 个)
    5 k0 W1 R0 j- E# t" ~* t3 R7 u( |cyclops-reactor-integration(com.oath.cyclops)https://github.com/aol/cyclops10.4.0 等(共 1 个)
    5 i! ^! l4 A4 R- ?$ T/ T+ bakka-stream-alpakka-geode_2.12(com.lightbend.akka)https://github.com/akka/alpakka1.0-M1 等(共 13 个), R: w( `4 Y. P/ Q9 Z% V
    mantis-client(io.mantisrx)https://github.com/Netflix/mantis1.3.9 等(共 83 个)( \5 S. W7 I; `
    mybatis-generator-plugin(com.itfsw)https://github.com/itfsw/mybatis-generator-plugin1.2.9 等(共 31 个)
    / A/ g0 x, q* ^2 pktorm-support-sqlserver(org.ktorm)https://github.com/kotlin-orm/ktorm3.3.0 等(共 11 个)2 |/ v7 c" V5 g* Y* K. t2 }# V
    gatk(org.broadinstitute)https://github.com/broadinstitute/gatk4.beta.2 等(共 39 个)
    $ B7 ^) X* l, w1 I0 O5 C* hazure-messaging-servicebus(com.azure)https://github.com/Azure/azure-sdk-for-java7.5.1 等(共 100 个), w, d1 H: N- P* V* x: \
    mica-metrics(net.dreamlu)https://github.com/lets-mica/mica2.5.7 等(共 7 个)
    / N9 V+ d3 a7 J, t9 b4 O) k3 [shiro-redis(org.crazycake)https://github.com/alexxiyang/shiro-redis3.3.1 等(共 2 个)* X3 H! S* M4 J" h) V! z
    enumeratum-play_2.12(com.beachape)https://github.com/lloydmeta/enumeratum1.5.16 等(共 2 个)
    " x9 W+ k0 V# i3 T* I7 g& Hjdonframework(org.jdon)https://github.com/banq/jdonframework6.6.8 等(共 1 个)
    8 x& ]" A+ H+ m' mweid-java-sdk(com.webank)https://github.com/WeBankBlockchain/WeIdentity1.8.1 等(共 3 个): b/ `: T1 M- |
    log-protocol(io.shulie.pradar)https://github.com/shulieTech/Takin2.0.3 等(共 3 个)
    " }) S5 K( U4 }micro-boot(com.oath.microservices)https://github.com/aol/micro-server1.2.6 等(共 38 个)/ X3 t: B" |+ h
    sparkling-water-package_2.11(ai.h2o)https://github.com/h2oai/sparkling-water2.4.10 等(共 36 个)$ I7 T) e6 Z# L5 A
    scalatest_2.13(au.com.dius.pact.provider)https://github.com/pact-foundation/pact-jvm4.2.4 等(共 5 个)
    * h$ f  X5 O* C2 s5 C6 N( ymssql-jdbc(com.microsoft.sqlserver)https://github.com/microsoft/mssql-jdbc8.3.0.jre11-preview 等(共 100 个), J: c# j8 x% k& q; V# c0 s  q
    elide-spring-boot-starter(com.yahoo.elide)https://github.com/yahoo/elide6.0.3 等(共 45 个)
    6 D& Y. l1 ^9 ]5 J* ?7 Lkafka-connect-elastic5(com.datamountaineer)https://github.com/lensesio/stream-reactor1.2.0 等(共 5 个)
    * `8 Y3 G; a; i7 Ikvision-server-spring-boot-jvm(io.kvision)https://github.com/rjaros/kvision5.4.3 等(共 9 个)# _7 t' i8 ]1 R. k; ?" S
    r2dbc-postgresql(org.postgresql)https://github.com/pgjdbc/r2dbc-postgresql0.9.0.RC1 等(共 8 个)
    8 [) H, U6 S3 I' _  l* splay-slick-evolutions_2.13(com.typesafe.play)https://github.com/playframework/play-slick5.0.0-RC3 等(共 29 个); K5 A4 g! C0 t! m4 d
    sbt-bloop-core(ch.epfl.scala)https://github.com/scalacenter/bloop1.4.8-43-c2d941d9 等(共 29 个)
    ' T8 T/ y8 A( F: T" g6 a$ tjcseg-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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