pam-u2f: CVE-2019-12210: debug_file file descriptor leak

Debian Bug report logs - #930023
pam-u2f: CVE-2019-12210: debug_file file descriptor leak

Reply or subscribe to this bug.

Toggle useless messages

Message #5 received at submit@bugs.debian.org (full text, mbox, reply):

From: Salvatore Bonaccorso <carnil@debian.org>

To: Debian Bug Tracking System <submit@bugs.debian.org>

Subject: pam-u2f: CVE-2019-12210: debug_file file descriptor leak

Date: Wed, 05 Jun 2019 12:06:58 +0200

Source: pam-u2f
Version: 1.0.7-1
Severity: important
Tags: security upstream

Hi,

The following vulnerability was published for pam-u2f.

CVE-2019-12210[0]:
| In Yubico pam-u2f 1.0.7, when configured with debug and a custom debug
| log file is set using debug_file, that file descriptor is not closed
| when a new process is spawned. This leads to the file descriptor being
| inherited into the child process; the child process can then read from
| and write to it. This can leak sensitive information and also, if
| written to, be used to fill the disk or plant misinformation.


If you fix the vulnerability please also make sure to include the
CVE (Common Vulnerabilities & Exposures) id in your changelog entry.

For further information see:

[0] https://security-tracker.debian.org/tracker/CVE-2019-12210
    https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12210
[1] https://www.openwall.com/lists/oss-security/2019/06/05/1

Please adjust the affected versions in the BTS as needed.

Regards,
Salvatore


-- System Information:
Debian Release: 10.0
  APT prefers unstable
  APT policy: (500, 'unstable'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-5-amd64 (SMP w/2 CPU cores)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE=C.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Send a report that this bug log contains spam.