Packages
- shadow - system login tools
Details
Florian Weimer discovered that shadow was not properly copying and removing
user directory trees, which could lead to a race condition. A local attacker
could possibly use this issue to setup a symlink attack and alter or remove
directories without authorization.
Florian Weimer discovered that shadow was not properly copying and removing
user directory trees, which could lead to a race condition. A local attacker
could possibly use this issue to setup a symlink attack and alter or remove
directories without authorization.
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 22.10 kinetic | passwd – 1:4.11.1+dfsg1-2ubuntu1.1 | ||
| login – 1:4.11.1+dfsg1-2ubuntu1.1 | |||
| libsubid4 – 1:4.11.1+dfsg1-2ubuntu1.1 | |||
| uidmap – 1:4.11.1+dfsg1-2ubuntu1.1 | |||
| 22.04 jammy | passwd – 1:4.8.1-2ubuntu2.1 | ||
| login – 1:4.8.1-2ubuntu2.1 | |||
| uidmap – 1:4.8.1-2ubuntu2.1 | |||
| 20.04 focal | passwd – 1:4.8.1-1ubuntu5.20.04.3 | ||
| login – 1:4.8.1-1ubuntu5.20.04.3 | |||
| uidmap – 1:4.8.1-1ubuntu5.20.04.3 | |||
| 18.04 bionic | passwd – 1:4.5-1ubuntu2.4 | ||
| login – 1:4.5-1ubuntu2.4 | |||
| uidmap – 1:4.5-1ubuntu2.4 | |||
| 16.04 xenial | passwd – 1:4.2-3.1ubuntu5.5+esm2 | ||
| login – 1:4.2-3.1ubuntu5.5+esm2 | |||
| uidmap – 1:4.2-3.1ubuntu5.5+esm2 | |||
| 14.04 trusty | passwd – 1:4.1.5.1-1ubuntu9.5+esm2 | ||
| login – 1:4.1.5.1-1ubuntu9.5+esm2 | |||
| uidmap – 1:4.1.5.1-1ubuntu9.5+esm2 | |||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.