Bug 1677288 (CVE-2018-20781) - CVE-2018-20781 gnome-keyring: user's login credentials is kept in a session-child process resulting in exposed plaintext password
Summary: CVE-2018-20781 gnome-keyring: user's login credentials is kept in a session-c...
Keywords:
Status: NEW
Alias: CVE-2018-20781
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
low
low
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 1677289
Blocks: 1677301
TreeView+ depends on / blocked
 
Reported: 2019-02-14 13:25 UTC by msiddiqu
Modified: 2019-09-29 15:07 UTC (History)
9 users (show)

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Description msiddiqu 2019-02-14 13:25:22 UTC
In pam/gkr-pam-module.c in GNOME Keyring before 3.27.2, the user's password is kept in a session-child process spawned from the LightDM daemon. This can expose the credential in cleartext.

Upstream Issue: 

https://gitlab.gnome.org/GNOME/gnome-keyring/issues/3

Reference:

https://bugzilla.gnome.org/show_bug.cgi?id=781486
https://bugs.launchpad.net/ubuntu/+source/gnome-keyring/+bug/1772919

Comment 1 msiddiqu 2019-02-14 13:25:37 UTC
Created libgnome-keyring tracking bugs for this issue:

Affects: fedora-all [bug 1677289]

Comment 2 msiddiqu 2019-02-14 13:26:37 UTC
External References:

https://gitlab.gnome.org/GNOME/gnome-keyring/tags/3.27.2

Comment 3 Doran Moppert 2019-03-05 04:33:14 UTC
To exploit this flaw, an attacker would need to read the memory of a local process under the uid of the target user. While exposing the user's password is significant, having this capacity puts the attacker definitively "within the gates" and already in a position to steal sensitive data if not worse.  Thus downgrading severity to Low.

libgnome-keyring is not affected by this issue.


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