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Ubuntu Security Notice USN-4449-2
September 02, 2020

apport vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 14.04 ESM

Summary:

Several security issues were fixed in Apport.

Software Description:
- apport: automatically generate crash reports for debugging

Details:

USN-4449-1 fixed several vulnerabilities in Apport. This update provides
the corresponding update for Ubuntu 14.04 ESM.

Original advisory details:

 Ryota Shiga working with Trend Micro´s Zero Day Initiative, discovered that
 Apport incorrectly dropped privileges when making certain D-Bus calls. A
 local attacker could use this issue to read arbitrary files.
 (CVE-2020-11936)

 Seong-Joong Kim discovered that Apport incorrectly parsed configuration
 files. A local attacker could use this issue to cause Apport to crash,
 resulting in a denial of service. (CVE-2020-15701)

 Ryota Shiga working with Trend Micro´s Zero Day Initiative, discovered that
 Apport incorrectly implemented certain checks. A local attacker could use
 this issue to escalate privileges and run arbitrary code. (CVE-2020-15702)

Update instructions:

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

Ubuntu 14.04 ESM:
  apport                          2.14.1-0ubuntu3.29+esm5
  python-apport                   2.14.1-0ubuntu3.29+esm5
  python3-apport                  2.14.1-0ubuntu3.29+esm5

In general, a standard system update will make all the necessary changes.

References:
  https://usn.ubuntu.com/4449-2
  https://usn.ubuntu.com/4449-1
  CVE-2020-11936, CVE-2020-15701, CVE-2020-15702