What’s Vulnerable › Vulnerabilities

CVE-2021-3345

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-01-29 · updated 2026-06-17
• Weakness: CWE-787

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.

Affected products

• gnupg Libgcrypt: 1.9.0
• Oracle Corporation Communications Billing and Revenue Management: 12.0.0.3.0

References

• https://bugs.gentoo.org/show_bug.cgi?id=767814
• https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
• https://gnupg.org
• https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html
• https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html
• https://www.oracle.com//security-alerts/cpujul2021.html
• https://bugs.gentoo.org/show_bug.cgi?id=767814
• https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
• https://gnupg.org
• https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html
• https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html
• https://www.oracle.com//security-alerts/cpujul2021.html

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