CVE-2020-29562 Denial of service in n/a
A flaw in the GNU C Library iconv function causes a program abort when converting specific UCS4 text, leading to denial of service.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2020-29562?
CVE-2020-29562 is a medium-severity denial of service vulnerability in Fedoraproject Fedora, published on 4 Dec 2020. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
The iconv function in the GNU C Library (aka glibc or libc6) 2.30 to 2.32, when converting UCS4 text containing an irreversible character, fails an assertion in the code path and aborts the program, potentially resulting in a denial of service.
Weakness: CWE-617
Which versions are affected by CVE-2020-29562?
It affects 3 products.
Products include Fedoraproject Fedora, Gnu Glibc, Netapp E-Series Santricity Os Controller.
How do I fix CVE-2020-29562?
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-2020-29562 being exploited?
There is no known exploitation of CVE-2020-29562 in the wild and no public exploit code.
Other vulnerabilities in Fedoraproject Fedora
Sources
Also known as DEBIAN-CVE-2020-29562, GHSA-9xm7-qxg2-g5p4, UBUNTU-CVE-2020-29562.