📄 libuser Denial of Service / Privilege Escalation

This is an old proof of concept from 2015 that demonstrates userhelper chfn newline filtering and libuser passwd file handling vulnerabilities. / roothelper.c - an unusual local root exploit against: CVE-2015-3245 userhelper chfn newline filtering CVE-2015-3246 libuser passwd file handling...

EUVD-2000-1192

Malware in sbrugna...

EUVD-2000-0052

Malware in sbrugna...

Linux Distros Unpatched Vulnerability : CVE-2015-3245

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available. - Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode...

SUSE CVE-2015-3245

Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service /etc/passwd corruption via a newline character in the GECOS field...

SUSE CVE-2015-3246

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 wi...

Security Bulletin: Security vulnerabilities in libuser affect IBM Netezza Host Management (CVE-2015-3246 and CVE-2015-3245)

Summary Two security vulnerabilities were discovered in Red Hat Linux. The vulnerabilities are in the userhelper utility part of the usermode package and the libuser library. Both libraries are installed by default on Red Hat Linux distributions. Authenticated, local users with shell access could...

Privilege Escalation

libuser is vulnerable to privilege escalation. Two flaws were found in the way the libuser library handled the /etc/passwd file. A local attacker could use an application compiled against libuser for example, userhelper to manipulate the /etc/passwd file, which could result in a denial of service...

Denial Of Service (DoS)

libuser is vulnerable to denial of service DoS attacks. The vulnerability exists as an incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of...

Libuser - 'roothelper' Local Privilege Escalation (Metasploit)

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Libuser roothelper Privilege Escalation', 'Description' = %q This module attempts to gain root privileges on Red Hat based Linux systems, includi...

Libuser roothelper Privilege Escalation Exploit

This Metasploit module attempts to gain root privileges on Red Hat based Linux systems, including RHEL, Fedora and CentOS, by exploiting a newline injection vulnerability in libuser and userhelper versions prior to 0.56.13-8 and version 0.60 before 0.60-7. This Metasploit module makes use of the...

Libuser roothelper Privilege Escalation

This module requires Metasploit: https://metasploit.com/download Current source: https://github.com/rapid7/metasploit-framework class MetasploitModule 'Libuser roothelper Privilege Escalation', 'Description' = %q This module attempts to gain root privileges on Red Hat based Linux systems, includi...

Libuser roothelper Privilege Escalation

This module attempts to gain root privileges on Red Hat based Linux systems, including RHEL, Fedora and CentOS, by exploiting a newline injection vulnerability in libuser and userhelper versions prior to 0.56.13-8 and version 0.60 before 0.60-7. This module makes use of the roothelper.c exploit...

CVE-2015-3246

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 wi...

CVE-2015-3246

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 wi...

CVE-2015-3245

Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service /etc/passwd corruption via a newline character in the GECOS field...

DEBIAN-CVE-2015-3245

Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service /etc/passwd corruption via a newline character in the GECOS field...

CVE-2015-3246

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 wi...

UBUNTU-CVE-2015-3246

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 wi...

CVE-2015-3245

Incomplete blacklist vulnerability in the chfn function in libuser before 0.56.13-8 and 0.60 before 0.60-7, as used in the userhelper program in the usermode package, allows local users to cause a denial of service /etc/passwd corruption via a newline character in the GECOS field...