Mageia alert MGASA-2020-0081 (sudo)

From:
             
 
Mageia Updates <buildsystem-daemon@mageia.org> 
To:
             
 
updates-announce@ml.mageia.org 
Subject:
             
 
[updates-announce] MGASA-2020-0081: Updated sudo packages fix security vulnerability 
Date:
             
 
Sun, 9 Feb 2020 20:14:43 +0100
Message-ID:
             
 
<20200209191443.9DD4C9F641@duvel.mageia.org>
MGASA-2020-0081 - Updated sudo packages fix security vulnerability

Publication date: 09 Feb 2020
URL: https://advisories.mageia.org/MGASA-2020-0081.html
Type: security
Affected Mageia releases: 7
CVE: CVE-2019-18634

Description:
The updated packages fix a security vulnerability:

In Sudo before 1.8.31, if pwfeedback is enabled in /etc/sudoers, users can
trigger a stack-based buffer overflow in the privileged sudo process.
(pwfeedback is a default setting in Linux Mint and elementary OS; however,
it is NOT the default for upstream and many other packages, and would exist
only if enabled by an administrator.) The attacker needs to deliver a long
string to the stdin of getln() in tgetpass.c. (CVE-2019-18634)

References:
- https://bugs.mageia.org/show_bug.cgi?id=26155
- https://www.sudo.ws/alerts/pwfeedback.html
- https://www.openwall.com/lists/oss-security/2020/01/30/6
- https://www.sudo.ws/stable.html#1.8.31
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-1...

SRPMS:
- 7/core/sudo-1.8.28-1.1.mga7