A Security Vulnerability in picld(1M) May Allow a Denial of Service to System Monitoring and System Services

Category
Security

Release Phase
Resolved

Bug Id
6547926

Product
Solaris 8 Operating System
Solaris 9 Operating System
Solaris 10 Operating System
OpenSolaris

Date of Resolved Release
30-Jul-2008

A Security Vulnerability in picld(1M) May Allow a Denial of Service to System Monitoring and System Services

1. Impact

Due to a security vulnerability in the Solaris Platform Information and Control Library daemon (picld(1M)), a local unprivileged user may be able to disable system monitoring and prevent system utilities (prtdiag(1M), prtpicl(1M), prtfru(1M)) from operating properly. This is a type of Denial of Service (DoS).

2. Contributing Factors

This can occur in the following releases:

SPARC Platform:

Solaris 8 (10/00 or later) without patch 112169-07
Solaris 9 without patch 137400-01
Solaris 10 without patch 138068-01
OpenSolaris based upon builds snv_01 through snv_95

x86 Platform:

Solaris 9 without patch 137401-01
Solaris 10 without patch 138069-01
OpenSolaris based upon builds snv_01 through snv_95

Notes:

1. Solaris 8 on the x86 platform is not impacted by this issue

2. Only OpenSolaris installations including the affected binary below are impacted by this issue.

/usr/lib/picl/picld

3. OpenSolaris distributions may include additional bug fixes above and beyond the build from which it was derived. The base build can be derived as follows:

$ uname -a
SunOS  phys-node-1 5.11 snv_86 i86pc i386 i86pc

3. Symptoms

If this issue has been exploited to cause a Denial of Service, invocations of prtpicl(1M), prtfru(1M) and prtdiag(1M) will not run to completion and will not display information that is normally seen.

4. Workaround

There is no workaround that would prevent this issue from being exploited.

If the issue has been exploited, it is possible to recover from the Denial of Service state by stopping and restarting picld(1M) by doing the following:

For Solaris 10, issue the following command:

# svcadm restart picl

For Solaris 9 and 8, issue the following commands:

# /etc/init.d/picld stop

# /etc/init.d/picld start

5. Resolution

This issue is addressed in the following releases:

SPARC Platform:

Solaris 8 with patch 112169-07 or later
Solaris 9 with patch 137400-01 or later
Solaris 10 with patch 138068-01 or later
OpenSolaris based upon builds snv_96 or later

x86 Platform:

Solaris 9 with patch 137401-01 or later
Solaris 10 with patch 138069-01 or later
OpenSolaris based upon builds snv_96 or later

For more information on Security Sun Alerts, see 1009886.1.

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References

138068-01
138069-01
137400-01
137401-01
112169-07

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