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Debian Security Advisory DSA-4783-1                   security@debian.org
https://www.debian.org/security/                     Salvatore Bonaccorso
November 05, 2020                     https://www.debian.org/security/faq
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Package        : sddm
CVE ID         : CVE-2020-28049
Debian Bug     : 973748

Fabian Vogt discovered a flaw in sddm, a modern display manager for X11.
A local attacker can take advantage of a race condition when creating
the Xauthority file to escalate privileges.

For the stable distribution (buster), this problem has been fixed in
version 0.18.0-1+deb10u1.

We recommend that you upgrade your sddm packages.

For the detailed security status of sddm please refer to its security
tracker page at:
https://security-tracker.debian.org/tracker/sddm

Further information about Debian Security Advisories, how to apply
these updates to your system and frequently asked questions can be
found at: https://www.debian.org/security/

Mailing list: debian-security-announce@lists.debian.org
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