CVE-2021-39247 Memory corruption in n/a
A one-byte buffer over-read in Zint Barcode Generator allows attackers to cause denial of service or disclose sensitive memory information.
- 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
- None listed
What is CVE-2021-39247?
CVE-2021-39247 is a medium-severity memory corruption vulnerability in n/a, published on 17 Aug 2021. 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
Zint Barcode Generator before 2.10.0 has a one-byte buffer over-read, related to is_last_single_ascii in code1.c, and rs_encode_uint in reedsol.c.
Weakness: CWE-125
Which versions are affected by CVE-2021-39247?
It affects 1 product.
Products include Zint Barcode Generator.
How do I fix CVE-2021-39247?
No fix has been published for CVE-2021-39247 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-2021-39247 being exploited?
There is no known exploitation of CVE-2021-39247 in the wild and no public exploit code.
Other vulnerabilities in n/a
Sources
Also known as GHSA-93xv-rpmh-3262, UBUNTU-CVE-2021-39247.