Summary
USN-4171-1 fixed several vulnerabilities in apport. This update provides
the corresponding update for Ubuntu 14.04 ESM.
Original advisory details:
Kevin Backhouse discovered Apport would read its user-controlled settings
file as the root user. This could be used by a local attacker to possibly
crash Apport or have other unspecified consequences. (CVE-2019-11481)
Sander Bos discovered a race-condition in Apport during core dump
creation. This could be used by a local attacker to generate a crash report
for a privileged process that is readable by an unprivileged user.
(CVE-2019-11482)
Sander Bos discovered Apport mishandled crash dumps originating from
containers. This could be used by a local attacker to generate a crash
report for a privileged process that is readable by an unprivileged user.
(CVE-2019-11483)
Sander Bos discovered Apport mishandled lock-file creation. This could be
used by a local attacker to cause a denial of service against Apport.
(CVE-2019-11485)
Kevin Backhouse discovered Apport read various process-specific files with
elevated privileges during crash dump generation. This could could be used
by a local attacker to generate a crash report for a privileged process
that is readable by an unprivileged user. (CVE-2019-15790)
Fixed packages 1
| Release | Package | Fixed in |
|---|---|---|
| Ubuntu · Pro 14.04 LTS Pro:14.04:LTS | apport | 2.14.1-0ubuntu3.29+esm2 |
Vulnerabilities 5
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High 7.0
Sander Bos discovered Apport mishandled crash dumps originating from containers. This could be used by a local attacker…
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Medium 4.2
Race condition between reading current working directory and writing a core dump
Sander Bos discovered a time of check to time of use (TOCTTOU) vulnerability in apport that allowed a user to cause core files to be written in arbitrary directories.
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Low 3.8
Apport reads arbitrary files if ~/.config/apport/settings is a symlink
Kevin Backhouse discovered that apport would read a user-supplied configuration file with elevated privileges. By replacing the file with a symbolic link, a user could get apport to read any file on the system as root, with unknown consequences.
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Low 3.3
apport created lock file in wrong directory
Sander Bos discovered Apport's lock file was in a world-writable directory which allowed all users to prevent crash handling.
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Low 2.8
Apport reads PID files with elevated privileges
Apport reads and writes information on a crashed process to /proc/pid with elevated privileges. Apport then determines which user the crashed process belongs to by reading /proc/pid through get_pid_info() in data/apport. An unprivileged user could exploit thi…