openSUSE-SU-2018:0560Vendor advisory
http://lists.opensuse.org/opensuse-updates/2018-02/msg00109.html CVE-2017-18078
HIGH
systemd (systemd-tmpfiles) < 236 - 'fs.protected_hardlinks=0' Local Privilege Escalation
Record summary
CVE-2017-18078 has a selected CVSS score of 7.8 (high); EIP currently links 1 catalogued exploit.
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.
Description source: CVE List
Exploitation context
Available material
- Catalogued exploits
- 1
Proofs of concept
1Catalogued exploits
ExploitDBsystemd (systemd-tmpfiles) < 236 - 'fs.protected_hardlinks=0' Local Privilege EscalationExploitDB exploitby Michael OrlitzkyNot analyzed1 file
References
12packetstormsecurity.com
http://packetstormsecurity.com/files/146184/systemd-Local-Privilege-Escalation.html [oss-security] 20180129 CVE-2018-18078: systemd-tmpfiles root privilege escalation with fs.protected_hardlinks=0mailing list
http://www.openwall.com/lists/oss-security/2018/01/29/3 github.com
https://github.com/systemd/systemd/issues/7736 [bookkeeper-issues] 20210629 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8mailing list
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b%40%3Cissues.bookkeeper.apache.org%3E lists.apache.org
https://lists.apache.org/thread.html/r58af02e294bd07f487e2c64ffc0a29b837db5600e33b6e698b9d696b@%3Cissues.bookkeeper.apache.org%3E [bookkeeper-issues] 20210628 [GitHub] [bookkeeper] padma81 opened a new issue #2746: Security Vulnerabilities in CentOS 7 image, Upgrade image to CentOS 8mailing list
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4%40%3Cissues.bookkeeper.apache.org%3E lists.apache.org
https://lists.apache.org/thread.html/rf4c02775860db415b4955778a131c2795223f61cb8c6a450893651e4@%3Cissues.bookkeeper.apache.org%3E [debian-lts-announce] 20190424 [SECURITY] [DLA 1762-1] systemd security updatemailing list
https://lists.debian.org/debian-lts-announce/2019/04/msg00022.html nvd.nist.gov
https://nvd.nist.gov/vuln/detail/CVE-2017-18078 43935exploit
https://www.exploit-db.com/exploits/43935 [oss-security] 20180129 Re: CVE-2017-18078: systemd-tmpfiles root privilegemailing list
https://www.openwall.com/lists/oss-security/2018/01/29/4