CVE-2021-3345 Memory corruption in n/a
A heap-based buffer overflow in Libgcrypt allows attackers to execute arbitrary code or cause denial of service via crafted digest final functions.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2021-3345?
CVE-2021-3345 is a high-severity memory corruption vulnerability in Oracle Communications Billing and Revenue Management, published on 29 Jan 2021. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest final function sets a large count value. It is recommended to upgrade to 1.9.1 or later.
Weakness: CWE-787
Which versions are affected by CVE-2021-3345?
It affects 2 products.
Products include Gnupg Libgcrypt, Oracle Communications Billing and Revenue Management.
How do I fix CVE-2021-3345?
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-2021-3345 being exploited?
There is no known exploitation of CVE-2021-3345 in the wild and no public exploit code.
Public exploit code: 2 proofs of concept on GitHub.
Other vulnerabilities in Oracle Communications Billing and Revenue Management
- CVE-2018-6829 Weak cryptography in n/a
- CVE-2026-41989 Memory corruption in Libgcrypt
- CVE-2021-40528 Weak cryptography in n/a
- CVE-2019-12904 Information disclosure in n/a
- CVE-2017-9526 Information disclosure in n/a
All Oracle Communications Billing and Revenue Management vulnerabilities
Sources
Also known as GHSA-pf53-rq8f-rwqx.