CVE-2021-3345 - _gcry_md_block_write in cipher/hash-common.c in Libgcrypt version 1.9.0 has a heap-based buffer over

CVE-2021-3345

Summary

_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.

References

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

Vulnerable Configurations

cpe:2.3:a:gnupg:libgcrypt:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:gnupg:libgcrypt:1.9.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:communications_billing_and_revenue_management:12.0.0.3.0:*:*:*:*:*:*:*

CVSS

Base:	7.2 (as of 26-04-2022 - 16:08)
Impact:
Exploitability:

CWE

CWE-787

CAPEC

Access

Vector	Complexity	Authentication
LOCAL	LOW	NONE

Impact

Confidentiality	Integrity	Availability
COMPLETE	COMPLETE	COMPLETE

cvss-vector via4

AV:L/AC:L/Au:N/C:C/I:C/A:C

Last major update

26-04-2022 - 16:08

Published

29-01-2021 - 15:15

Last modified

26-04-2022 - 16:08