[gpfsug-discuss] GPFS vulnerability with possible root exploit on versions prior to 5.0.4.3 (and 4.2.3.21)

Stephan Graf st.graf at fz-juelich.de
Wed Apr 22 10:02:59 BST 2020


Hi

I took a lookat the "Readme and Release notes for release 5.0.4.3 IBM 
Spectrum Scale 5.0.4.3 
Spectrum_Scale_Data_Management-5.0.4.3-x86_64-Linux Readme"
But I did not find the entry which mentioned the "For IBM Spectrum Scale 
V5.0.0.0 through V5.0.4.1, reference APAR  IJ23438" APAR number which is 
mentioned on the "Security Bulletin: A vulnerability has been identified 
in IBM Spectrum Scale where an unprivileged user could execute commands 
as root ( CVE-2020-4273)" page.

shouldn't it be mentioned there?

Stephan


Am 22.04.2020 um 10:19 schrieb Jaime Pinto:
> In case you missed (the forum has been pretty quiet about this one), 
> CVE-2020-4273 had an update yesterday:
> 
> https://www.ibm.com/support/pages/node/6151701?myns=s033&mynp=OCSTXKQY&mync=E&cm_sp=s033-_-OCSTXKQY-_-E 
> 
> 
> If you can't do the upgrade now, at least apply the mitigation to the 
> client nodes generally exposed to unprivileged users:
> 
> Check the setuid bit:
> ls -l /usr/lpp/mmfs/bin | grep r-s | awk '{system("ls -l 
> /usr/lpp/mmfs/bin/"$9)}')
> 
> Apply the mitigation:
> ls -l /usr/lpp/mmfs/bin | grep r-s | awk '{system("chmod u-s 
> /usr/lpp/mmfs/bin/"$9)}'
> 
> Verification:
> ls -l /usr/lpp/mmfs/bin | grep r-s | awk '{system("ls -l 
> /usr/lpp/mmfs/bin/"$9)}')
> 
> All the best
> Jaime
> 
> .
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