Stack buffer overflow in illumos reparsed nfs-basic plugin allows local users to crash the daemon
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| illumos | illumos-gate | unaffected |
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| OmniOS | OmniOS | affected |
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| Illumos | Illumos-gate |
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| Omnios | Omnios |
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Vendor Solution
Update your illumos distribution to one that includes the fix for this issue.
Vendor Workaround
The svc:/system/filesystem/reparse service is disabled by default. Systems on which it has not been enabled are not exposed; on others, disabling it removes exposure at the cost of reparse point (NFS referral) resolution.
No CVSS v3.1
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.137% probability within 30 days)
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ssvc
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| First Time appeared |
Illumos
Illumos illumos-gate Omnios Omnios omnios |
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| Vendors & Products |
Illumos
Illumos illumos-gate Omnios Omnios omnios |
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| Description | A stack-based buffer overflow in the illumos reparse point daemon (reparsed) allows a local user to crash the daemon. get_fs_locations() in usr/src/cmd/fs.d/nfs/rp_basic/libnfs_basic.c, part of the nfs-basic reparse plugin, copies the host and path components of a reparse string into a fixed 1024-byte stack buffer without checking their length. The reparsed door at /var/run/reparsed_door is readable by all users and the door server does not check the caller's credentials, so an unprivileged local user can send an nfs-basic request with an overlong host or path component to overflow the buffer. On systems built with stack protection, which is the default, this causes reparsed to abort; repeated requests place the svc:/system/filesystem/reparse service into maintenance. The service is disabled by default. The flaw has existed since 2009 (illumos-gate commit 2f172c55), and affects any illumos distribution prior to illumos-gate commit 6a2df4aa. | |
| Title | Stack buffer overflow in illumos reparsed nfs-basic plugin allows local users to crash the daemon | |
| Weaknesses | CWE-121 | |
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| Metrics |
cvssV4_0
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