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Ubuntu 14.04 ESM: USN-4616-2 Critical: AccountsService Local Attack

ubuntu
Calendar Grey November 4, 2020
Dist Ubuntu Esm H88
Urgent security patch concerning AccountsService flaws in Ubuntu 14.04 ESM necessitating prompt action.
Several security issues were fixed in AccountsService.

Summary

Several security issues were fixed in AccountsService.

Software Description:

- accountsservice: query and manipulate user account information

Details:

USN-4616-1 fixed several vulnerabilities in AccountsService. This update provides

the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

Kevin Backhouse discovered that AccountsService incorrectly dropped

privileges. A local user could possibly use this issue to cause

AccountsService to crash or hang, resulting in a denial of service.

(CVE-2020-16126)

Matthias Gerstner discovered that AccountsService incorrectly handled

certain path checks. A local attacker could possibly use this issue to

read arbitrary files. (CVE-2018-14036)

Topics%20covered

Topics Covered

security advisory security update Ubuntu local attack file access Denial of Service AccountsService

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 ESM:
  accountsservice                 0.6.35-0ubuntu7.3+esm2
  libaccountsservice0             0.6.35-0ubuntu7.3+esm2

After a standard system update you need to reboot your computer to make
all the necessary changes.

References

https://ubuntu.com/security/notices/USN-4616-2

https://ubuntu.com/security/notices/USN-4616-1

CVE-2018-14036, CVE-2020-16126

Severity
critical
Lowest
Low
Medium
High
Critical

November 04, 2020

Topics%20covered

Topics Covered

security advisory security update Ubuntu local attack file access Denial of Service AccountsService

Package Information

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