VulnerabilityModified
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.
HIGH 7.8EPSS 1.06%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.06%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 7.8 HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 1.06% probability · 63th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-787
- Affected
- gnupg/libgcrypt · oracle/communications billing and revenue management
- Source
- cve@mitre.org
References
- https://bugs.gentoo.org/show_bug.cgi?id=767814Issue Tracking, Vendor Advisory
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
- https://gnupg.orgVendor Advisory
- https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.htmlMailing List, Vendor Advisory
- https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.htmlMailing List, Patch, Vendor Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlThird Party Advisory
- https://bugs.gentoo.org/show_bug.cgi?id=767814Issue Tracking, Vendor Advisory
- https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
- https://gnupg.orgVendor Advisory
- https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.htmlMailing List, Vendor Advisory
- https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.htmlMailing List, Patch, Vendor Advisory
- https://www.oracle.com//security-alerts/cpujul2021.htmlThird Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.