Home/CVE/_gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer overflow when the digest
CVE

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

_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.

HIGH · CVSS 7.8 EPSS 0.05706
Schedule remediation
  • EPSS percentile: top 9% of all CVEs by exploitation likelihood
  • CVSS base score ≥ 7.0
Sigma rules0 YARA rules0
⬡

Weakness Classification

CWE-787Out-of-bounds Write
▤

Affected Products & Versions

2
gnupg libgcryptall versions
oracle communications billing and revenue managementall versions
▣

Scoring & Timeline

7.8
HIGH · CVSS v3.1 · cve@mitre.org
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD29 Jan 2021 · 03:15 PM
CVSS VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
⚑

Vendor Advisories

2
suse-csafopenSUSE-SU-2024:10941-1
oracle-cpuoracle-cpu-Oracle-Communications-Billing-and-Revenue-Management-2136--CVE-2021-3345
🔗

References & Sources

6
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
https://bugs.gentoo.org/show_bug.cgi?id=767814Issue TrackingVendor Advisory
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git
https://gnupg.orgVendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.htmlMailing ListVendor Advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.htmlMailing ListPatchVendor Advisory
https://www.oracle.com//security-alerts/cpujul2021.htmlThird Party Advisory
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