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

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.openwall.com/lists/oss-security/2020/01/30/6
- - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18634

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

Mageia 2020-0081: sudo security update

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 privileg...

Summary

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.openwall.com/lists/oss-security/2020/01/30/6

- - https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-18634

Resolution

MGASA-2020-0081 - Updated sudo packages fix security vulnerability

SRPMS

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

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

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