Description
libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, directly modifies /etc/passwd, which allows local users to cause a denial of service (inconsistent file state) by causing an error during the modification. NOTE: this issue can be combined with CVE-2015-3245 to gain privileges.
CVSS breakdown
CVSS 3.1
Attack Vector
Local
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Exploits & proofs of concept
- exploit-dbLibuser - 'roothelper' Local Privilege Escalation (Metasploit)by Metasploit
- exploit-dbLibuser Library - Multiple Vulnerabilitiesby Qualys Corporation
References
- MISChttp://www.securityfocus.com/bid/76022
- MAILING_LISThttp://lists.fedoraproject.org/pipermail/package-announce/2015-July/162947.html
- EXPLOIThttps://www.exploit-db.com/exploits/44633/
- VENDOR_ADVISORYhttps://access.redhat.com/articles/1537873
- MISChttp://rhn.redhat.com/errata/RHSA-2015-1482.html
- MAILING_LISThttp://lists.fedoraproject.org/pipermail/package-announce/2015-August/163044.html
- MAILING_LISThttp://lists.opensuse.org/opensuse-security-announce/2015-08/msg00000.html
- MISChttps://www.qualys.com/2015/07/23/cve-2015-3245-cve-2015-3246/cve-2015-3245-cve-2015-3246.txt
- MISChttp://www.securitytracker.com/id/1033040
- MISChttp://rhn.redhat.com/errata/RHSA-2015-1483.html
Updated 5m ago · 8 sources