CVE-2017-14176 Bazaar allows remote attackers to execute arbitrary commands via a bzr+ssh URL with initial dash character in hostname
Remote attackers can execute arbitrary commands via a crafted bzr+ssh URL when Subprocess SSH is enabled in Bazaar.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2017-14176?
CVE-2017-14176 is a high-severity command injection vulnerability in Canonical Ubuntu Linux, published on 27 Nov 2017. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
Bazaar through 2.7.0, when Subprocess SSH is used, allows remote attackers to execute arbitrary commands via a bzr+ssh URL with an initial dash character in the hostname, a related issue to CVE-2017-9800, CVE-2017-12836, CVE-2017-12976, CVE-2017-16228, CVE-2017-1000116, and CVE-2017-1000117.
Which versions are affected by CVE-2017-14176?
3 open source packages ship an affected version, including bzr. It affects 3 products.
| Package | Affected | Fixed in |
|---|---|---|
bzr PyPI | All versions | None |
bzr PyPI | All versions to 2.7.0 | None |
bzr PyPI | All versions to 2.7.0 | None |
Linux distribution packages (1)
bzr SUSE:Linux Enterprise Software Development Kit 11 SP4 | All versions | 1.8-3.5.1 |
Products include Canonical Bazaar, Canonical Ubuntu Linux, Debian Debian Linux.
How do I fix CVE-2017-14176?
Apply the vendor's patch.
Upgrade, and pass arguments to programs as a list instead of through a shell. More about Command injection.
Is CVE-2017-14176 being exploited?
There is no known exploitation of CVE-2017-14176 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2017-14176, DSA-4052-1, GHSA-jjxg-hpm7-g95f, PYSEC-2017-149, SUSE-SU-2018:1489-1, UBUNTU-CVE-2017-14176 and 1 more.