Exploit/Advisories

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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

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