CVE-2020-9308 Memory corruption in n/a
A crafted RAR5 file with a corrupted header causes a segmentation fault in libarchive, potentially allowing denial of service or code execution.
- 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-2020-9308?
CVE-2020-9308 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 20 Feb 2020. 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
archive_read_support_format_rar5.c in libarchive before 3.4.2 attempts to unpack a RAR5 file with an invalid or corrupted header (such as a header size of zero), leading to a SIGSEGV or possibly unspecified other impact.
Weakness: CWE-787
Which versions are affected by CVE-2020-9308?
It affects 3 products.
Products include Canonical Ubuntu Linux, Fedoraproject Fedora, Libarchive Libarchive.
How do I fix CVE-2020-9308?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2020-9308 being exploited?
There is no known exploitation of CVE-2020-9308 in the wild and no public exploit code.
Other vulnerabilities in Canonical Ubuntu Linux
Sources
Also known as ALPINE-CVE-2020-9308, DEBIAN-CVE-2020-9308, GHSA-mgg9-26cw-p92x.