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CVE-2017-5932

Status Candidate

Overview

The path autocompletion feature in Bash 4.4 allows local users to gain privileges via a crafted filename starting with a " (double quote) character and a command substitution metacharacter.

Related Files

Ubuntu Security Notice USN-3294-1
Posted May 18, 2017
Authored by Ubuntu | Site security.ubuntu.com

Ubuntu Security Notice 3294-1 - Bernd Dietzel discovered that Bash incorrectly expanded the hostname when displaying the prompt. If a remote attacker were able to modify a hostname, this flaw could be exploited to execute arbitrary code. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. It was discovered that Bash incorrectly handled the SHELLOPTS and PS4 environment variables. A local attacker could use this issue to execute arbitrary code with root privileges. This issue only affected Ubuntu 14.04 LTS, Ubuntu 16.04 LTS and Ubuntu 16.10. Various other issues were also addressed.

tags | advisory, remote, arbitrary, local, root, bash
systems | linux, ubuntu
advisories | CVE-2016-0634, CVE-2016-7543, CVE-2016-9401, CVE-2017-5932
SHA-256 | f45d68112bea29f65c3632f3d6b8227dff94e29452d9f3d29a6943cc82cb3905
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