CVE-2019-17133 Memory corruption in n/a
A buffer overflow in the Linux kernel's wireless subsystem allows attackers to execute arbitrary code or escalate privileges via a long SSID.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2019-17133?
CVE-2019-17133 is a critical memory corruption vulnerability in Canonical Ubuntu Linux, published on 4 Oct 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
In the Linux kernel through 5.3.2, cfg80211_mgd_wext_giwessid in net/wireless/wext-sme.c does not reject a long SSID IE, leading to a Buffer Overflow.
Weakness: CWE-120
Which versions are affected by CVE-2019-17133?
It affects 4 products.
Products include Canonical Ubuntu Linux, Debian Debian Linux, Linux kernel, Opensuse Leap.
How do I fix CVE-2019-17133?
Apply the vendor's patch.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-17133 being exploited?
There is no known exploitation of CVE-2019-17133 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as DEBIAN-CVE-2019-17133, GHSA-4v38-w5qx-qhmh, UBUNTU-CVE-2019-17133.