CVE-2021-3345

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.

Category

7.8
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 5.71% Top 15%
Vendor Advisory gentoo.org Vendor Advisory gnupg.org Vendor Advisory gnupg.org Vendor Advisory gnupg.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=libgcrypt.git%3Ba=commit%3Bh=512c0c75276949f13b6373b5c04f7065af750b08
https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000455.html mailing list vendor advisory
https://lists.gnupg.org/pipermail/gnupg-announce/2021q1/000456.html mailing list patch vendor advisory
https://gnupg.org vendor advisory
https://bugs.gentoo.org/show_bug.cgi?id=767814 issue tracking vendor advisory
https://www.oracle.com//security-alerts/cpujul2021.html third party advisory

Frequently Asked Questions

What is the severity of CVE-2021-3345?
CVE-2021-3345 has been scored as a high severity vulnerability.
How to fix CVE-2021-3345?
To fix CVE-2021-3345, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-3345 being actively exploited in the wild?
It is possible that CVE-2021-3345 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~6% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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