CVE-2015-6806 Denial of service in n/a
Remote attackers can cause a denial of service in GNU screen via a crafted escape sequence with a large repeat count, leading to stack consumption.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2015-6806?
CVE-2015-6806 is a medium-severity denial of service vulnerability in n/a, published on 28 Sep 2015. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The MScrollV function in ansi.c in GNU screen 4.3.1 and earlier does not properly limit recursion, which allows remote attackers to cause a denial of service (stack consumption) via an escape sequence with a large repeat count value.
Weakness: CWE-119
Which versions are affected by CVE-2015-6806?
It affects 1 product.
Linux distribution packages (6)
screen SUSE:Linux Enterprise Desktop 12 SP3 | All versions | 4.0.4-23.3.3 |
screen SUSE:Linux Enterprise Desktop 12 SP4 | All versions | 4.0.4-23.3.3 |
screen SUSE:Linux Enterprise Server 12 SP3 | All versions | 4.0.4-23.3.3 |
screen SUSE:Linux Enterprise Server 12 SP4 | All versions | 4.0.4-23.3.3 |
screen SUSE:Linux Enterprise Server for SAP Applications 12 SP3 | All versions | 4.0.4-23.3.3 |
screen SUSE:Linux Enterprise Server for SAP Applications 12 SP4 | All versions | 4.0.4-23.3.3 |
Products include Gnu Gnu Screen.
How do I fix CVE-2015-6806?
Upgrade to a fixed version.
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-2015-6806 being exploited?
There is no known exploitation of CVE-2015-6806 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as DEBIAN-CVE-2015-6806, DLA-305-1, DSA-3352-1, GHSA-3cxx-6jhw-pqvg, MGASA-2015-0354, SUSE-SU-2019:1354-1 and 2 more.