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https://issues.apache.org/jira/browse/YARN-7590?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16322681#comment-16322681
 ] 

genericqa commented on YARN-7590:
---------------------------------

| (/) *{color:green}+1 overall{color}* |
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|| Vote || Subsystem || Runtime || Comment ||
| {color:blue}0{color} | {color:blue} reexec {color} | {color:blue}  0m 
17s{color} | {color:blue} Docker mode activated. {color} |
|| || || || {color:brown} Prechecks {color} ||
| {color:green}+1{color} | {color:green} @author {color} | {color:green}  0m  
0s{color} | {color:green} The patch does not contain any @author tags. {color} |
| {color:green}+1{color} | {color:green} test4tests {color} | {color:green}  0m 
 0s{color} | {color:green} The patch appears to include 1 new or modified test 
files. {color} |
|| || || || {color:brown} trunk Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green} 16m 
33s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
49s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
33s{color} | {color:green} trunk passed {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
27m 48s{color} | {color:green} branch has no errors when building and testing 
our client artifacts. {color} |
|| || || || {color:brown} Patch Compile Tests {color} ||
| {color:green}+1{color} | {color:green} mvninstall {color} | {color:green}  0m 
31s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} compile {color} | {color:green}  0m 
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} cc {color} | {color:green}  0m 
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} javac {color} | {color:green}  0m 
45s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} mvnsite {color} | {color:green}  0m 
28s{color} | {color:green} the patch passed {color} |
| {color:green}+1{color} | {color:green} whitespace {color} | {color:green}  0m 
 0s{color} | {color:green} The patch has no whitespace issues. {color} |
| {color:green}+1{color} | {color:green} shadedclient {color} | {color:green} 
11m 17s{color} | {color:green} patch has no errors when building and testing 
our client artifacts. {color} |
|| || || || {color:brown} Other Tests {color} ||
| {color:green}+1{color} | {color:green} unit {color} | {color:green} 17m 
22s{color} | {color:green} hadoop-yarn-server-nodemanager in the patch passed. 
{color} |
| {color:green}+1{color} | {color:green} asflicense {color} | {color:green}  0m 
20s{color} | {color:green} The patch does not generate ASF License warnings. 
{color} |
| {color:black}{color} | {color:black} {color} | {color:black} 59m 12s{color} | 
{color:black} {color} |
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|| Subsystem || Report/Notes ||
| Docker | Client=17.05.0-ce Server=17.05.0-ce Image:yetus/hadoop:5b98639 |
| JIRA Issue | YARN-7590 |
| JIRA Patch URL | 
https://issues.apache.org/jira/secure/attachment/12905712/YARN-7590.010.patch |
| Optional Tests |  asflicense  compile  cc  mvnsite  javac  unit  |
| uname | Linux 595f4bd2b69f 3.13.0-135-generic #184-Ubuntu SMP Wed Oct 18 
11:55:51 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux |
| Build tool | maven |
| Personality | /testptch/patchprocess/precommit/personality/provided.sh |
| git revision | trunk / 2e0a451 |
| maven | version: Apache Maven 3.3.9 |
| Default Java | 1.8.0_151 |
|  Test Results | 
https://builds.apache.org/job/PreCommit-YARN-Build/19199/testReport/ |
| Max. process+thread count | 339 (vs. ulimit of 5000) |
| modules | C: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 U: 
hadoop-yarn-project/hadoop-yarn/hadoop-yarn-server/hadoop-yarn-server-nodemanager
 |
| Console output | 
https://builds.apache.org/job/PreCommit-YARN-Build/19199/console |
| Powered by | Apache Yetus 0.7.0-SNAPSHOT   http://yetus.apache.org |


This message was automatically generated.



> Improve container-executor validation check
> -------------------------------------------
>
>                 Key: YARN-7590
>                 URL: https://issues.apache.org/jira/browse/YARN-7590
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: security, yarn
>    Affects Versions: 2.0.1-alpha, 2.2.0, 2.3.0, 2.4.0, 2.5.0, 2.6.0, 2.7.0, 
> 2.8.0, 2.8.1, 3.0.0-beta1
>            Reporter: Eric Yang
>            Assignee: Eric Yang
>         Attachments: YARN-7590.001.patch, YARN-7590.002.patch, 
> YARN-7590.003.patch, YARN-7590.004.patch, YARN-7590.005.patch, 
> YARN-7590.006.patch, YARN-7590.007.patch, YARN-7590.008.patch, 
> YARN-7590.009.patch, YARN-7590.010.patch
>
>
> There is minimum check for prefix path for container-executor.  If YARN is 
> compromised, attacker  can use container-executor to change system files 
> ownership:
> {code}
> /usr/local/hadoop/bin/container-executor spark yarn 0 etc /home/yarn/tokens 
> /home/spark / ls
> {code}
> This will change /etc to be owned by spark user:
> {code}
> # ls -ld /etc
> drwxr-s---. 110 spark hadoop 8192 Nov 21 20:00 /etc
> {code}
> Spark user can rewrite /etc files to gain more access.  We can improve this 
> with additional check in container-executor:
> # Make sure the prefix path is owned by the same user as the caller to 
> container-executor.
> # Make sure the log directory prefix is owned by the same user as the caller.



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