Description
systemd-tmpfiles in systemd before 237 attempts to support ownership/permission changes on hardlinked files even if the fs.protected_hardlinks sysctl is turned off, which allows local users to bypass intended access restrictions via vectors involving a hard link to a file for which the user lacks write access, as demonstrated by changing the ownership of the /etc/passwd file.
No summary for this CVE yet.
CVSS Vector Breakdown
Exploitability
AV:LAttack VectorLocal
AC:LAttack ComplexityLow
PR:LPrivileges RequiredLow
UI:NUser InteractionNone
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:HIntegrityHigh
A:HAvailabilityHigh
Weaknesses
Affected Products
ООО «РусБИТех-Астра»
commercial·RUaka rusbitech-astra
systemd project
oss-projectaka systemd
debian
oss-project·GBaka debian gnu/linux
opensuse
oss-project·DE
Сообщество свободного программного обеспечения
oss-projectaka fsf
Novell Inc.
commercial·US
and 2 more affected products View all →
Exploitability
6 exploit sources identified
Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.
View exploit details Official Patch Available
Attack Graph
Products CVE Techniques Tactics
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MITRE ATT&CK
2 techniques Collection
Discovery
References
http://lists.opensuse.org/opensuse-updates/2018-02/msg00109.html
lists.opensuse.org
http://www.openwall.com/lists/oss-security/2018/01/29/3
openwall.com
https://www.exploit-db.com/exploits/43935/
exploit-db.com
and 16 more references View all →
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