CVE-2019-19451 Denial of service in n/a
An attacker can cause a denial of service by providing a filename with invalid encoding, leading to an endless loop and disk exhaustion.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-19451?
CVE-2019-19451 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 29 Nov 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
When GNOME Dia before 2019-11-27 is launched with a filename argument that is not a valid codepoint in the current encoding, it enters an endless loop, thus endlessly writing text to stdout. If this launch is from a thumbnailer service, this output will usually be written to disk via the system's logging facility (potentially with elevated privileges), thus filling up the disk and eventually rendering the system unusable. (The filename can be for a nonexistent file.) NOTE: this does not affect an upstream release, but affects certain Linux distribution packages with version numbers such as 0.97.3.
Weakness: CWE-835
Which versions are affected by CVE-2019-19451?
It affects 3 products.
Linux distribution packages (8)
dia SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 0.97.3-17.4.1 |
dia SUSE:Linux Enterprise Software Development Kit 12 SP4 | All versions | 0.97.3-17.4.1 |
dia SUSE:Linux Enterprise Software Development Kit 12 SP5 | All versions | 0.97.3-17.4.1 |
dia SUSE:Linux Enterprise Workstation Extension 12 SP4 | All versions | 0.97.3-17.4.1 |
dia SUSE:Linux Enterprise Workstation Extension 12 SP5 | All versions | 0.97.3-17.4.1 |
dia SUSE:Linux Enterprise Workstation Extension 15 | All versions | 0.97.3-4.3.3 |
dia SUSE:Linux Enterprise Workstation Extension 15 SP1 | All versions | 0.97.3-4.3.3 |
dia openSUSE:Leap 15.1 | All versions | 0.97.3-lp151.4.3.1 |
Products include Fedoraproject Fedora, Gnome Dia, Opensuse Leap.
How do I fix CVE-2019-19451?
Apply the vendor's patch.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2019-19451 being exploited?
There is no known exploitation of CVE-2019-19451 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2019-19451, GHSA-4vq3-2rwv-w7mg, MGASA-2020-0022, SUSE-SU-2019:3390-1, SUSE-SU-2019:3391-1, UBUNTU-CVE-2019-19451 and 1 more.