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CVE-2016-9950

Status Candidate

Overview

An issue was discovered in Apport before 2.20.4. There is a path traversal issue in the Apport crash file "Package" and "SourcePackage" fields. These fields are used to build a path to the package specific hook files in the /usr/share/apport/package-hooks/ directory. An attacker can exploit this path traversal to execute arbitrary Python files from the local system.

Related Files

Apport 2.x Local Code Execution
Posted Dec 19, 2016
Authored by Donncha OCearbhaill

Apport version 2.x on Ubuntu Desktop versions 12.10 up to 16.04 local code execution exploit.

tags | exploit, local, code execution
systems | linux, ubuntu
advisories | CVE-2016-9949, CVE-2016-9950, CVE-2016-9951
SHA-256 | 58f056541314215738fc565a181c0095886482addab3394cc2cc59a0b2938a0f
Ubuntu Security Notice USN-3157-1
Posted Dec 15, 2016
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3157-1 - Donncha O Cearbhaill discovered that the crash file parser in Apport improperly treated the CrashDB field as python code. An attacker could use this to convince a user to open a maliciously crafted crash file and execute arbitrary code with the privileges of that user. This issue only affected Ubuntu 14.04 LTS and Ubuntu 16.04 LTS. Donncha O Cearbhaill discovered that Apport did not properly sanitize the Package and SourcePackage fields in crash files before processing package specific hooks. An attacker could use this to convince a user to open a maliciously crafted crash file and execute arbitrary code with the privileges of that user. Various other issues were also addressed.

tags | advisory, arbitrary, python
systems | linux, ubuntu
advisories | CVE-2016-9949, CVE-2016-9950, CVE-2016-9951
SHA-256 | a6a736e2e12ac1c6250ab44dd7b1b96530916ecd5f2b440dec573008e9c757d8
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