Buffer overflow in Gnupg Libgcrypt
CVE-2021-3345
_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.
Vulnerability class: Buffer Overflow
EPSS: 0.011 (60.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.8 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Gnupg Libgcrypt — versions 1.9.0
- Oracle Communications_billing_and_revenue_management — versions 12.0.0.3.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (x_refsource_MISC)
- cve@mitre.org (Mailing List, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (Patch, Mailing List, x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Vendor Advisory)
- cve@mitre.org (x_refsource_MISC, Issue Tracking, Vendor Advisory)
- cve@mitre.org (Third Party Advisory, x_refsource_MISC)
Frequently asked questions
- What is CVE-2021-3345?
- CVE-2021-3345 is a high-severity vulnerability in Gnupg Libgcrypt, classified under Out-of-bounds Write. CVSS score: 7.8/10. Published 2021-01-29.
- How severe is CVE-2021-3345?
- High severity. CVSS v3 base score is 7.8 out of 10.
- Is CVE-2021-3345 known to be exploited?
- 15 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.