CVE-2019-17263 Memory corruption in n/a
A heap-based buffer over-read in libfwsi allows attackers to cause denial of service or disclose sensitive memory contents via crafted input.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2019-17263?
CVE-2019-17263 is a low-severity memory corruption vulnerability in n/a, published on 6 Oct 2019. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
In libyal libfwsi before 20191006, libfwsi_extension_block_copy_from_byte_stream in libfwsi_extension_block.c has a heap-based buffer over-read because rejection of an unsupported size only considers values less than 6, even though values of 6 and 7 are also unsupported. NOTE: the vendor has disputed this as described in the GitHub issue
Weakness: CWE-125
Which versions are affected by CVE-2019-17263?
It affects 1 product.
Products include Libfwsi Project Libfwsi.
How do I fix CVE-2019-17263?
No fix has been published for CVE-2019-17263 yet. Limit exposure of the affected software until one is available.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2019-17263 being exploited?
There is no known exploitation of CVE-2019-17263 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2019-17263, GHSA-wpqw-8rxf-9cw7.